Relevant bibliographies by topics / Fluid flow; Combustion; Heat transfer

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Fluid flow; Combustion; Heat transfer'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Fluid flow; Combustion; Heat transfer"

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Lalovic, Milisav, Zarko Radovic, and Nada Jaukovic. "Characteristics of heat flow in recuperative heat exchangers." Chemical Industry 59, no. 9-10 (2005): 270–74. http://dx.doi.org/10.2298/hemind0510270l.

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A simplified model of heat flow in cross-flow tube recuperative heat exchangers (recuperators) was presented in this paper. One of the purposes of this investigation was to analyze changes in the values of some parameters of heat transfer in recuperators during combustion air preheating. The logarithmic mean temperature (Atm) and overall heat transfer coefficient (U), are two basic parameters of heat flow, while the total heated area surface (A) is assumed to be constant. The results, presented as graphs and in the form of mathematical expressions, were obtained by analytical methods and using experimental data. The conditions of gaseous fuel combustions were defined by the heat value of gaseous fuel Qd = 9263.894 J.m-3, excess air ratio ?= 1.10, content of oxygen in combustion air ?(O2) = 26%Vol, the preheating temperature of combustion air (cold fluid outlet temperature) tco = 100-500?C, the inlet temperature of combustion products (hot fluid inlet temperature) thi = 600-1100?C.
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Lin, Chien-Nan, Cheng-Chi Wang, and Yi-Pin Kuo. "The heat and fluid flow analysis for water heater." Thermal Science 15, suppl. 1 (2011): 81–86. http://dx.doi.org/10.2298/tsci11s1081l.

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In this paper, the heat transfer and fluid flow are studied for the water heater of RV cars, in which the hot water is heated by the combustion energy of liquefied petroleum gases. Three types of combustion tubes are performed in this investigation, which are circular tube, elliptic tube and elliptic tube with screwed wire inserted. The heat transfer performances of numerical simulation results are compared with those of the experimental works; they are in good trend agreement. The elliptic combustion tube performs better than the circular one, which indicates the average 7% energy saving for the elliptic combustion tube and 12% energy saving for the elliptic combustion tube with screwed wire under static heating.
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Robinson, K., J. G. Hawley, G. P. Hammond, and N. J. Owen. "Convective coolant heat transfer in internal combustion engines." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 217, no. 2 (February 1, 2003): 133–46. http://dx.doi.org/10.1177/095440700321700207.

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Simple heat transfer correlations are known to underpredict the single-phase convective heat transfer coefficient when applied to internal combustion (IC) engine cooling passages. The reasons for such underprediction were investigated using a specially designed test rig which was operated under a wide variety of test conditions relevant to IC engine operation. Data from this rig study identified that undeveloped flow (fluid dynamically and thermally), surface roughness and fluid viscosity variation with temperature were the physical reasons responsible for the mismatch. Simple empirical heat transfer models have subsequently been extended to take account of these factors and are shown to give much improved correlation with rig data, and data from an engine study. The implications of this work for predicting engine heat transfer in a three-dimensional computational fluid dynamics environment are discussed.
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Pfeiffelmann, Björn, Michael Diederich, Fethi Gül, Ali Cemal Benim, Andreas Hamberger, and Markus Heese. "Analysis of combustion, heat and fluid flow in a biomass furnace." E3S Web of Conferences 128 (2019): 03003. http://dx.doi.org/10.1051/e3sconf/201912803003.

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A waste wood burning boiler with 200kW thermal power is investigated by experiments and numerically. Temperature measurements are performed in the furnace and in the heat exchanger sectionsin the downstream. Exit exhaust gas composition is also measured. Flow, heat transfer and combustion in the furnace, and forced convection on the water side are numerically analyzed. The water side calculations are used to obtain boundary conditions for the furnace by heat transfer coefficients. For validating the adopted mathematical/numerical formulation, the predictions are compared with measurements.A satisfactory agreement between the predictions and measurements is observed, confirming the validity of the applied computational procedures.
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Wichangarm, Mana, Anirut Matthujak, Thanarath Sriveerakul, Sedthawatt Sucharitpwatskul, and Sutthisak Phongthanapanich. "Simulation Study of LPG Cooking Burner." International Journal of Engineering & Technology 7, no. 3.7 (July 4, 2018): 142. http://dx.doi.org/10.14419/ijet.v7i3.7.16257.

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The objective of this paper is to numerically study the flow feature and combustion phenomena of an energy-saving cooking burner using three-dimensional computational fluid dynamics (CFD). Combustion temperatures were experimentally and numerically investigated in order to not only validate the CFD model, but also describe the combustion phenomena. From the temperature comparison, the CFD model was good agreement with the experiment, having the error of less than 5.86%. Based upon the insight from the CFD model, the high temperature of 1,286 K occurred at the middle of the burner. The high intensive vortex of the flow being enhanced the combustion intensity and the heat transfer coefficient is obvious observed near the burner head inside the ring. Therefore, it is concluded that the burner ring is the major part since it controls flame structure, high temperature region, intensive combustion region, heat loss and suitable flow feature. However, heat transfer to the vessel should be further clarified by the CFD model.
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Gorla, R. S. R., and T. A. Bartrand. "Couette Flow Heat Loss Model for the Rotary Combustion Engine." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 210, no. 6 (November 1996): 587–96. http://dx.doi.org/10.1243/pime_proc_1996_210_233_02.

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A novel model for predicting heat transfer in a rotary engine was formulated and implemented in a zero-dimensional engine performance model. Results were compared with a commonly used intermittent combustion engine heat transfer model and with results from a three-dimensional simulation of flow within a rotary engine. When squish effects associated with fluid motion within the chamber were included, the Couette flow model reproduced peak heat transfer rates and timing for the peak heat transfer rate was better than that of the commonly used heat transfer model. Previously, rotary engine performance models have employed flat plate type heat transfer correlations. These correlations, though useful, do not model the flow physics in the rotary engine faithfully. Rather than flow over a flat plate, flow in the rotary engine was approximated as turbulent Couette flow. The Couette model was altered to account for centre-line velocities higher than half the rotor speed. There are two advantages to using the Couette flow model. Firstly, as noted, the underlying physics of the Couette flow model is closer to conditions in the rotary engine. Secondly, with the Couette flow model it is possible to differentiate between the rotor and housing heat transfer coefficients.
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Trabelsi, Soraya, Wissem Lakhal, Ezeddine Sediki, and Mahmoud Moussa. "Nusselt number evaluation for combined radiative and convective heat transfer in flow of gaseous products from combustion." Thermal Science 17, no. 4 (2013): 1093–106. http://dx.doi.org/10.2298/tsci110531083t.

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Combined convection and radiation in simultaneously developing laminar flow and heat transfer is numerically considered with a discrete-direction method. Coupled heat transfer in absorbing emitting but not scattering gases is presented in some cases of practical situations such as combustion of natural gas, propane and heavy fuel. Numerical calculations are performed to evaluate the thermal radiation effects on heat transfer through combustion products flowing inside circular ducts. The radiative properties of the flowing gases are modeled by using the absorption distribution function (ADF) model. The fluid is a mixture of carbon dioxide, water vapor, and nitrogen. The flow and energy balance equations are solved simultaneously with temperature dependent fluid properties. The bulk mean temperature variations and Nusselt numbers are shown for a uniform inlet temperature. Total, radiative and convective mean Nusselt numbers and their axial evolution for different gas mixtures produced by combustion with oxygen are explored.
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Mat Noh, Nor Amelia Shafikah, Baljit Singh Bhathal Singh, Muhammad Fairuz Remeli, and Amandeep Oberoi. "Internal Combustion Engine Exhaust Waste Heat Recovery Using Thermoelectric Generator Heat Exchanger." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 82, no. 2 (April 30, 2021): 15–27. http://dx.doi.org/10.37934/arfmts.82.2.1527.

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Heat engine converts chemical engine available in fuel to useful mechanical energy. One of the most famous heat engines is internal combustion (IC) engine. IC engine plays a pivotal role in transportation and other industrial applications. A lot of waste heat is rejected from a typical IC engine as the conversion efficiency of this type of engine is only about 35-40 %. The waste heat has the potential to be tapped and converted into useful energy. This can help to increase the performance of the IC engine system. This work focused on the conversion of the waste heat energy of the IC engine into electricity by using thermoelectric generator (TEG). The aim of the project was to demonstrate the applicability of TEG to convert waste heat from exhaust to useful electrical energy. Two TEGs were individually tested to attain the electrical characterization and also tested on series and parallel connections. The study showed that the series connection of TEGs has improved and increased voltage generation but parallel connection is more reliable. The system proved that the waste heat recovery using TEGs has tremendous application in IC engine for better and higher efficient engine performance.
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Miyama, Hiroshi, Hitoshi Kaji, Yasuo Hirose, and Norio Arai. "Heat transfer characteristics of a rotary regenerative combustion system (RRX)." Heat Transfer - Japanese Research 27, no. 8 (1998): 584–96. http://dx.doi.org/10.1002/(sici)1520-6556(1998)27:8<584::aid-htj3>3.0.co;2-2.

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Meng, Hai Yu, Shu Zhong Wang, Lu Zhou, Zhi Qiang Wu, Jun Zhao, and Lin Chen. "Influence of Inlet Mass Flow Rate on Heat Transfer of Supercritical Liquefied Natural Gas in Horizontal Tubes." Advanced Materials Research 960-961 (June 2014): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.433.

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The submerged combustion vaporizer (SCV) is a new kind of vaporizer for liquefied natural gas (LNG). In this paper, a numerical study has been carried out to investigate the heat transfer characteristics of supercritical LNG in horizontal tubes. The thermo-physical properties of supercritical LNG were used for this study, and the influence of inlet LNG mass flow rate on heat transfer was investigated. Numerical results showed that the LNG flow in horizontal tubes included two stages. In the first stage, the surface heat transfer coefficients increased significantly with the increase of the fluid bulk temperature and reached a maximum value when the fluid bulk temperature equaled the pseudo-critical point . After the maximum, the surface heat transfer coefficients fell rapidly with the increase of the fluid bulk temperature. With increasing the inlet LNG mass flow rate, the surface heat transfer coefficients increased due to the increased fluid velocity in horizontal tubes.
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Dissertations / Theses on the topic "Fluid flow; Combustion; Heat transfer"

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Rizvi, Syed Mahdi Abbas. "Prediction of flow, combustion and heat transfer in pulverised coal flames." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/8946.

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Kedukodi, Sandeep. "Numerical Analysis of Flow and Heat Transfer through a Lean Premixed Swirl Stabilized Combustor Nozzle." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/77393.

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While the gas turbine research community is continuously pursuing development of higher cyclic efficiency designs by increasing the combustor firing temperatures and thermally resistant turbine vane / blade materials, a simultaneous effort to reduce the emission levels of high temperature driven thermal NOX also needs to be addressed. Lean premixed combustion has been found as one of the solutions to these objectives. However, since less amount of air is available for backside cooling of liner walls, it becomes very important to characterize the convective heat transfer that occurs on the inside wall of the combustor liners. These studies were explored using laboratory scale experiments as well as numerical approaches for several inlet flow conditions under both non-reacting and reacting flows. These studies may be expected to provide valuable insights for the industrial design communities towards identifying thermal hot spot locations as well as in quantifying the heat transfer magnitude, thus aiding in effective designs of the liner walls. Lean premixed gas turbine combustor flows involve strongly coupled interactions between several aspects of physics such as the degree of swirl imparted by the inlet fuel nozzle, premixing of the fuel and incoming air, lean premixed combustion within the combustor domain, the interaction of swirling flow with combustion driven heat release resulting in flow dilation, the resulting pressure fluctuations leading to thermo-acoustic instabilities there by creating a feedback loop with incoming reactants resulting in flow instabilities leading to flame lift off, flame extinction etc. Hence understanding combustion driven swirling flow in combustors continues to be a topic of intense research. In the present study, numerical predictions of swirl driven combustor flows were analyzed for a specific swirl number of an industrial fuel nozzle (swirler) using a commercial computational fluid dynamics tool and compared against in-house experimental data. The latter data was obtained from a newly developed test rig at Applied Propulsion and Power Laboratory (APPL) at Virginia Tech. The simulations were performed and investigated for several flow Reynolds numbers under non-reacting condition using various two equation turbulence models as well as a scale resolving model. The work was also extended to reacting flow modeling (using a partially premixed model) for a specific Reynolds number. These efforts were carried out in order investigate the flow behavior and also characterize convective heat transfer along the combustor wall (liner). Additionally, several parametric studies were performed towards investigating the effect of combustor geometry on swirling flow and liner hear transfer; and also to investigate the effect of inlet swirl on the jet impingement location along the liner wall under both non-reacting as well as reacting conditions. The numerical results show detailed comparison against experiments for swirling flow profiles within the combustor under reacting conditions indicating a good reliability of steady state modeling approaches for reacting conditions; however, the limitations of steady state RANS turbulence models were observed for non-reacting swirling flow conditions, where the flow profiles deviate from experimental observations in the central recirculation region. Also, the numerical comparison of liner wall heat transfer characteristics against experiments showed a sensitivity to Reynolds numbers. These studies offer to provide preliminary insights of RANS predictions based on commercial CFD tools in predicting swirling, non-reacting and reacting flow and heat transfer. They can be extended to reacting flow heat transfer studies in future and also may be upgraded to unsteady LES predictions to complement future experimental observations conducted at the in-house test facility.
Ph. D.
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Shinde, Pradeep R. "Investigation of Low Reynolds Number Flow and Heat Transfer of Louvered Surfaces." FIU Digital Commons, 2016. http://digitalcommons.fiu.edu/etd/3038.

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This study focuses on the investigation of flow behavior at low Reynolds numbers by the experimental and numerical performance testing of micro-channel heat exchangers. An experimental study of the heat transfers and pressure drop of compact heat exchangers with louvered fins and flat tubes was conducted within a low air-side Reynolds number range of 20 < ReLp < 225. Using an existing low-speed wind tunnel, 26 sample heat exchangers of corrugated louver fin type, were tested. New correlations for Colburn j and Fanning friction f factor have been developed in terms of non-dimensional parameters. Within the investigated parameter ranges, it seems that both the j and f factors are better represented by two correlations in two flow regimes (one for ReLp = 20 – 80 and one for ReLp = 80 – 200) than a single regime correlation in the power-law format. The results support the conclusion that airflow and heat transfer at very low Reynolds numbers behaves differently from that at higher Reynolds numbers. The effect of the geometrical parameters on the heat exchanger performance was investigated. The numerical investigation was conducted for further understanding of the flow behavior at the range of experimentally tested Reynolds number. Ten different heat exchanger geometries with varied geometrical parameters obtained for the experimental studies were considered for the numerical investigation. The variations in the louver angle were the basis of the selection. The heat transfer and pressure drop performance was numerically investigated and the effect of the geometrical parameters was evaluated. Numerical results were compared against the experimental results. From the comparison, it is found that the current numerical viscous laminar models do not reflect experimentally observed transitional two regime flow behavior from fin directed to the louver directed at very low Reynolds number ranging from 20 to 200. The flow distribution through the fin and the louver region was quantified in terms of flow efficiency. The flow regime change was observed at very low Reynolds number similar to the experimental observations. However, the effect of two regime flow change does not reflect on the thermal hydraulic performance of numerical models. New correlations for the flow efficiency � have developed in terms of non-dimensional parameters.
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Liewkongsataporn, Wichit. "A numerical study of pulse-combustor jet impingement heat transfer." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22651.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2008.
Committee Co-Chair: Ahrens, Fred; Committee Co-Chair: Patterson, Tim; Committee Member: Aidun, Cyrus; Committee Member: Empie, Jeff; Committee Member: Frederick, Jim.
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Zhang, Huaibao. "HIGH TEMPERATURE FLOW SOLVER FOR AEROTHERMODYNAMICS PROBLEMS." UKnowledge, 2015. https://uknowledge.uky.edu/me_etds/64.

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A weakly ionized hypersonic flow solver for the simulation of reentry flow is firstly developed at the University of Kentucky. This code is the fluid dynamics module of known as Kentucky Aerothermodynamics and Thermal Response System (KATS). The solver uses a second-order finite volume approach to solve the laminar Navier– Stokes equations, species mass conservation and energy balance equations for flow in chemical and thermal non-equilibrium state, and a fully implicit first-order backward Euler method for the time integration. The hypersonic flow solver is then extended to account for very low Mach number flow using the preconditioning and switch of the convective flux scheme to AUSM family. Additionally, a multi-species preconditioner is developed. The following part of this work involves the coupling of a free flow and a porous medium flow. A new set of equation system for both free flows and porous media flows is constructed, which includes a Darcy–Brinkmann equation for momentum, mass conservation, and energy balance equation. The volume-average technique is used to evaluate the physical properties in the governing equations. Instead of imposing interface boundary conditions, this work aims to couple the free/porous problem through flux balance, therefore, flow behaviors at the interface are satisfied implicitly.
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Nelson, Lauren May. "Rayleigh Flow of Two-Phase Nitrous Oxide as a Hybrid Rocket Nozzle Coolant." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/284.

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The Mechanical Engineering Department at California Polytechnic State University in San Luis Obispo currently maintains a lab-scale hybrid rocket motor for which nitrous oxide is utilized as the oxidizer in the combustion system. Because of its availability, the same two-phase (gas and liquid) nitrous oxide that is used in the combustion system is also routed around the throat of the hybrid rocket’s converging-diverging nozzle as a coolant. While this coolant system has proven effective empirically in previous tests, the physics behind the flow of the two-phase mixture is largely unexplained. This thesis provides a method for predicting some of its behavior by modeling it using the classic gas dynamics scenarios of Rayleigh and Fanno flows which refer to one-dimensional, compressible, inviscid flow in a constant area duct with heat addition and friction. The two-phase model produced utilizes a separated phase with interface exchange model for predicting whether or not dryout occurs. The Shah correlation is used to predict heat transfer coefficients in the nucleate boiling regime. The homogeneous flow model is utilized to predict pressure drop. It is proposed that a Dittus-Boelter based correlation much like that of Groeneveld be developed for modeling heat transfer coefficients upon the collection of sufficient data. Data was collected from a series of tests on the hybrid rocket nozzle to validate this model. The tests were first run for the simplified case of an ideal gas (helium) coolant to verify the experimental setup and promote confidence in subsequent two-phase experimental results. The results of these tests showed good agreement with a combined Rayleigh-Fanno model with a few exceptions including: (1) reduced experimental gas pressure and temperature in the annulus entrance and exit regions compared to the model and (2) reduced experimentally measured copper temperatures uniformly through the annulus. These discrepancies are likely explained by the geometry of the flowpath and location of the copper thermocouples respectively. Next, a series of two-phase cooled experiments were run. Similar trends were seen to the helium experiment with regards to entrance and exit regions. The two-phase Rayleigh homogeneous flow model underpredicted pressure drop presumably due to the inviscid assumption. Ambiguity was observed in the fluid temperature measurements but the trend seemed to suggest that mild thermal non-equilibrium existed. In both cases, the dryout model predicted that mist flow (a post-CHF regime) occurred over most of the annulus. Several modifications should be implemented in future endeavors. These include: (1) collecting more data to produce a heat transfer coefficient correlation specific to the nitrous oxide system of interest, (2) accounting for thermal non-equilibrium, (3) accounting for entrance and exit effects, and (4) developing a two-phase Fanno model.
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Psimas, Michael J. "Experimental and numerical investigation of heat and mass transfer due to pulse combustor jet impingement." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33863.

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Under certain circumstances pulse combustors have been shown to improve both heat transfer and drying rate when compared to steady flow impingement. Despite this potential, there have been few investigations into the use of pulse combustor driven impingement jets for industrial drying applications. The research presented here utilized experimental and numerical techniques to study the heat transfer characteristics of these types of oscillating jets when impinging on solid surfaces and the heat and mass transfer when drying porous media. The numerical methods were extensively validated using laboratory heat flux and drying data, as well as correlations from literature. As a result, the numerical techniques and methods that were developed and employed in this work were found to be well suited for the current application. It was found that the pulsating flows yielded elevated heat and mass transfer compared to similar steady flow jets. However, the numerical simulations were used to analyze not just the heat flux or drying, but also the details of the fluid flow in the impingement zone that resulted in said heat and mass transport. It was found that the key mechanisms of the enhanced transfer were the vortices produced by the oscillating flow. The characteristics of these vortices such as the size, strength, location, duration, and temperature, determined the extent of the improvement. The effects of five parameters were studied: the velocity amplitude ratio, oscillation frequency, the time-averaged bulk fluid velocity at the tailpipe exit, the hydraulic diameter of the tailpipe, and the impingement surface velocity. Analysis of the resulting fluid flow revealed three distinct flow types as characterized by the vortices in the impingement zone, each with unique heat transfer characteristics. These flow types were: a single strong vortex that dissipated before the start of the next oscillation cycle, a single persistent vortex that remained relatively strong at the end of the cycle, and a strong primary vortex coupled with a short-lived, weaker secondary vortex. It was found that the range over which each flow type was observed could be classified into distinct flow regimes. The secondary vortex and persistent vortex regimes were found to enhance heat transfer. Subsequently, transition criteria dividing these regimes were formed based on dimensionless parameters. The critical dimensionless parameters appeared to be the Strouhal number, a modified Strouhal number, the Reynolds number, the velocity amplitude ratio, and the H/Dh ratio. Further study would be required to determine if these parameters offer similar significance for other configurations.
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Mala, Gh Mohiuddin. "Heat transfer and fluid flow in microchannels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0005/NQ39562.pdf.

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Tian, Jing. "Fluid flow and heat transfer in woven textiles." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615243.

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Beale, Steven Brydon. "Fluid flow and heat transfer in tube banks." Thesis, Imperial College London, 1992. http://hdl.handle.net/10044/1/8103.

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Books on the topic "Fluid flow; Combustion; Heat transfer"

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V, Ganapathy. BASIC programs for steam plant engineers: Boilers, combustion fluid flow, and heat transfer. New York: Dekker, 1986.

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Sengupta, Tapan Kumar. Instabilities of flows: With and without heat transfer and chemical reaction. Wien: Springer Verlag, 2010.

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Meeting, American Society of Mechanical Engineers Winter. Fluid flow and heat transfer in reciprocating machinery: Presented at the Winter Annual Meeting of the American Society of Mechanical Engineers, Boston, Massachusetts, December 13-18, 1987. New York, N.Y. (345 E. 47th St., New York 10017): The Society, 1987.

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Srinivasacharya, D., and K. Srinivas Reddy, eds. Numerical Heat Transfer and Fluid Flow. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-1903-7.

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Miguel, António F., and Luiz A. O. Rocha. Tree-Shaped Fluid Flow and Heat Transfer. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73260-2.

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Whalley, P. B. Two-phase flow and heat transfer. Oxford: Oxford University Press, 1996.

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E, Launder B., and Reece G. J. 1940-, eds. Computer-aided engineering: Heat transfer and fluid flow. Chichester, West Sussex, England: Ellis Horwood, 1985.

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Owen, J. M. Flow and heat transfer in rotating-disc systems. Taunton: Research Studies Press, 1989.

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Owen, J. M. Flow and heat transfer in rotating-disc systems. Taunton: Research Studies, 1995.

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A, Mosyak, and Hetsroni Gad, eds. Fluid flow, heat transfer and boiling in micro-channels. Berlin: Springer, 2009.

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Book chapters on the topic "Fluid flow; Combustion; Heat transfer"

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Haidn, Oskar J., Nikolaus A. Adams, Rolf Radespiel, Thomas Sattelmayer, Wolfgang Schröder, Christian Stemmer, and Bernhard Weigand. "Collaborative Research for Future Space Transportation Systems." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 1–30. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_1.

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Abstract This chapter book summarizes the major achievements of the five topical focus areas, Structural Cooling, Aft-Body Flows, Combustion Chamber, Thrust Nozzle, and Thrust-Chamber Assembly of the Collaborative Research Center (Sonderforschungsbereich) Transregio 40. Obviously, only sample highlights of each of the more than twenty individual projects can be given here and thus the interested reader is invited to read their reports which again are only a summary of the entire achievements and much more information can be found in the referenced publications. The structural cooling focus area included results from experimental as well as numerical research on transpiration cooling of thrust chamber structures as well as film cooling supersonic nozzles. The topics of the aft-body flow group reached from studies of classical flow separation to interaction of rocket plumes with nozzle structures for sub-, trans-, and supersonic conditions both experimentally and numerically. Combustion instabilities, boundary layer heat transfer, injection, mixing and combustion under real gas conditions and in particular the investigation of the impact of trans-critical conditions on propellant jet disintegration and the behavior under trans-critical conditions were the subjects dealt with in the combustion chamber focus area. The thrust nozzle group worked on thermal barrier coatings and life prediction methods, investigated cooling channel flows and paid special attention to the clarification and description of fluid-structure-interaction phenomena I nozzle flows. The main emphasis of the focal area thrust-chamber assembly was combustion and heat transfer investigated in various model combustors, on dual-bell nozzle phenomena and on the definition and design of three demonstrations for which the individual projects have contributed according to their research field.
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Barfusz, Oliver, Felix Hötte, Stefanie Reese, and Matthias Haupt. "Pseudo-transient 3D Conjugate Heat Transfer Simulation and Lifetime Prediction of a Rocket Combustion Chamber." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 265–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_17.

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Abstract Rocket engine nozzle structures typically fail after a few engine cycles due to the extreme thermomechanical loading near the nozzle throat. In order to obtain an accurate lifetime prediction and to increase the lifetime, a detailed understanding of the thermomechanical behavior and the acting loads is indispensable. The first part is devoted to a thermally coupled simulation (conjugate heat transfer) of a fatigue experiment. The simulation contains a thermal FEM model of the fatigue specimen structure, RANS simulations of nine cooling channel flows and a Flamelet-based RANS simulation of the hot gas flow. A pseudo-transient, implicit Dirichlet–Neumann scheme is utilized for the partitioned coupling. A comparison with the experiment shows a good agreement between the nodal temperatures and their corresponding thermocouple measurements. The second part consists of the lifetime prediction of the fatigue experiment utilizing a sequentially coupled thermomechanical analysis scheme. First, a transient thermal analysis is carried out to obtain the temperature field within the fatigue specimen. Afterwards, the computed temperature serves as input for a series of quasi-static mechanical analyses, in which a viscoplastic damage model is utilized. The evolution and progression of the damage variable within the regions of interest are thoroughly discussed. A comparison between simulation and experiment shows that the results are in good agreement. The crucial failure mode (doghouse effect) is captured very well.
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Hötte, Felix, Oliver Günther, Christoph von Sethe, Matthias Haupt, Peter Scholz, and Michael Rohdenburg. "Lifetime Experiments of Regeneratively Cooled Rocket Combustion Chambers and PIV Measurements in a High Aspect Ratio Cooling Duct." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 279–93. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_18.

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Abstract This paper aims at experimental investigations of the life limiting mechanisms of regeneratively cooled rocket combustion chambers, especially the so called doghouse effect. In this paper the set up of a cyclic thermo-mechanical fatigue experiment and its results are shown. This experiment has an actively cooled fatigue specimen that is mounted downstream of a subscale GOX-GCH$$_{\text {4}}$$ combustion chamber with rectangular cross section. The specimen is loaded cyclically and inspected after each cycle. The effects of roughness, the use of thermal barrier coatings, the length of the hot gas phase, the oxygen/fuel ratio and the hot gas pressure are shown. In a second experiment the flow in a generic high aspect ratio cooling duct is measured with the Particle Image Velocimetry (PIV) to characterize the basic flow. The main focus of the analysis is on the different recording and processing parameters of the PIV method. Based on this analysis a laser pulse interval and the window size for auto correlation is chosen. Also the repeatability of the measurements is demonstrated. These results are the starting point for future measurements on the roughness effect on heat transfer and pressure loss in a high aspect ratio cooling duct.
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Shang, De-Yi, and Liang-Cai Zhong. "Conservation Equations of Fluid Flow." In Heat and Mass Transfer, 19–31. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94403-6_2.

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Kleinstreuer, Clement. "Biofluid Flow and Heat Transfer." In Fluid Mechanics and Its Applications, 481–522. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-1-4020-8670-0_9.

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Faghri, Amir, and Yuwen Zhang. "Fluid-Particle Flow and Heat Transfer." In Fundamentals of Multiphase Heat Transfer and Flow, 623–86. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22137-9_11.

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Poinsot, Thierry. "Two-Phase Flow Combustion." In Instabilities of Flows: With and Without Heat Transfer and Chemical Reaction, 267–85. Vienna: Springer Vienna, 2010. http://dx.doi.org/10.1007/978-3-7091-0127-8_10.

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Gugulothu, Ravi, Narsimhulu Sanke, and A. V. S. S. K. S. Gupta. "Numerical Study of Heat Transfer Characteristics in Shell-and-Tube Heat Exchanger." In Numerical Heat Transfer and Fluid Flow, 375–83. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1903-7_43.

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Pavankumar Reddy, M., and J. V. Ramana Murthy. "Heat Flow in a Rectangular Plate." In Numerical Heat Transfer and Fluid Flow, 223–31. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1903-7_26.

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Sundén, Bengt. "Heat Transfer and Fluid Flow in Rib-Roughened Rectangular Ducts." In Heat Transfer Enhancement of Heat Exchangers, 123–40. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-015-9159-1_8.

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Conference papers on the topic "Fluid flow; Combustion; Heat transfer"

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Roth, Christof, Nikolaos Perakis, and Oskar J. Haidn. "Modeling Combustion and Heat Transfer in a Single-Element GCH4/GOX Rocket Combustor." In 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20). Avestia Publishing, 2020. http://dx.doi.org/10.11159/ffhmt20.178.

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Jiang, Yu, Seok-Gi Ahn, Dong-Hun Oh, and Chung-Hwan Jeon. "Numerical Analysis of the Combustion Characteristics for the Power Improvement and Additional SOFA System in a Pulverized-Coal Boiler." In International Conference of Fluid Flow, Heat and Mass Transfer. Avestia Publishing, 2018. http://dx.doi.org/10.11159/ffhmt18.128.

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Zanoni, Marco A. B., Jason I. Gerhard, and Jose L. Torero. "Experimental Measurements of the Volumetric Heat Transfer Coefficient between Forced Air and Sand at Reynold’s Numbers Relevant to Smouldering Combustion." In International Conference of Fluid Flow, Heat and Mass Transfer. Avestia Publishing, 2016. http://dx.doi.org/10.11159/ffhmt16.150.

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LaVigne, P. A., C. L. Anderson, and C. Prakash. "Unsteady Heat Transfer and Fluid Flow in Porous Combustion Chamber Deposits." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1986. http://dx.doi.org/10.4271/860241.

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Wang, Xudong, and Yali Shao. "Simulations of Binary Particles Distributions in a Separated-Gasification Chemical Looping Combustion System." In THE 6th NTERNATIONAL CONFERENCE ON FLUID FLOW, HEAT AND MASS TRANSFER. Avestia Publishing, 2019. http://dx.doi.org/10.11159/ffhmt19.173.

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Mousemi, Arash, Sepehr Mosadegh, Alireza Khademi, and Giancarlo Sorrentino. "Design Algorithm Evaluation of Swirler-Injector Systems in LiquidBurning Combustion Chambers." In 7th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT'20). Avestia Publishing, 2020. http://dx.doi.org/10.11159/ffhmt20.194.

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Darbandi, Masoud, Majid Ghafourizadeh, and Gerry E. Schneider. "The Formation of Pollutants CO/CO2 in a Steam-Injected Combustor." In International Conference of Fluid Flow, Heat and Mass Transfer. Avestia Publishing, 2018. http://dx.doi.org/10.11159/ffhmt18.137.

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Mishra, D. P., and T. Vishak. "Computational Studies of Turbulent Flow in an Isothermal Suddenly Enlarged Combustion Chamber." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56156.

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The present work is concerned with computational studies of turbulent flow under isothermal condition in a suddenly enlarged combustion chamber using time averaged Navier-Stokes equations with an eddy-viscosity turbulence closure model. Results were compared well with that of experimental data available in open literature. The effect of inlet turbulence intensity is found to be the dominant parameter determining the flow field. However this effect is found to be decreasing with the increase in the expansion ratio. The increase of turbulence level decreases the reattachment length due to the energy supply to the separating shear layer, which is a major factor determining the reattachment length. It has been found out that for same expansion ratio, the reattachment length attains a minimum value for low turbulence Reynolds number, increases with increase in Reynolds number, and attains a maximum limit. Both the turbulent kinetic energy and the turbulent dissipation rate are found to be maximum in the shear layer and also keep increasing with the increase in turbulence intensity.
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Shojaee Fard, M. H., and A. R. Noorpoor. "Numerical Simulation of Heat and Fluid Flow Behavior in a Pipe Flow With Sinusoidal Boundary Condition." In ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0638.

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In this investigation a two-dimensional airflow and heat transfer with sinusoidal boundary condition analysis was conducted. Both laminar and turbulent sinusoidal pipe flows were investigated numerically for Remax = 2000, 10000, 20000 and 60000. The results are compared with experimental results of previous investigators [2], [5]. Comparing non-dimensional velocity amplitudes also checks predictions of the flow regime on present sinusoidal flow conditions. A high Reynolds number RNG k-ε turbulence model was used for turbulent flows. An available code, which is basis on finite volume and can solve Nervier-stokes equations on the structured grids, is used. After discrete equations on the control volume, physical properties flux on the control volume by means of first-order upwind difference scheme is calculated. Then, to solve algebraic equations the SIMPLE method is used. Computational results are presented and discussed for velocity, pressure drop, wall shear, temperature, heat flux, and convection coefficient.
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Mei, Ning, Xiaoyan Wang, Hongming Zhao, Yan Li, and Hongyu Si. "Numerical and Experimental Study on Soot Accumulation on the Wall of Falling Fuel Film Micro-Combustor." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22093.

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Fluid flow contributes much to fuel-air mixture formation in a micro-combustor, the RNG k-ε turbulence model was used to simulate the cold flow field of a falling fuel film microcombustor, and comparison was made between numerical result and experimental results. It is shown that the RNG k-ε turbulence model translated the flow field of a complex structure micro-combustor and the soot accumulation on the wall of combustion chamber. The experimental results showed that soot accumulation occurs in vortex backflow area near the wall of combustion chamber and the numerical methods is helpful for understanding the way of soot accumulation in the wall of combustion chamber. Therefore, modifications on the flow field with different diameters and entrance direction of the air flow into the primary combustion chamber were made. The numerical simulation of flow distribution showed that the flow field of micro-combustor could be ideal for eliminated soot accumulation.
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Reports on the topic "Fluid flow; Combustion; Heat transfer"

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Juric, D., G. Tryggvason, and J. Han. Direct numerical simulations of fluid flow, heat transfer and phase changes. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/463676.

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Carrington, David Bradley, and Jiajia Waters. Combustion Research I.1 Sprays, Flow, Heat Transfer and Turbulent Mixing. Office of Scientific and Technical Information (OSTI), December 2019. http://dx.doi.org/10.2172/1578023.

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Talbot, L. Application of Rayleigh Scattering to Turbulent Flow with Heat Transfer and Combustion. Fort Belvoir, VA: Defense Technical Information Center, June 1986. http://dx.doi.org/10.21236/ada172934.

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FRANCIS JR., NICHOLAS D., MICHAEL T. ITAMURA, STEPHEN W. WEBB, and DARRYL L. JAMES. CFD Modeling of Natural Convection Heat Transfer and Fluid Flow in Yucca Mountain Project (YMP) Enclosures. Office of Scientific and Technical Information (OSTI), March 2003. http://dx.doi.org/10.2172/809609.

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Paul Cizmas. A REDUCED ORDER MODEL OF TWO-PHASE FLOW, HEAT TRANSFER AND COMBUSTION IN CIRCULATING FLUIDIZED-BEDS. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/827038.

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Paul Cizmas. A REDUCED ORDER MODEL OF TWO-PHASE FLOW, HEAT TRANSFER AND COMBUSTION IN CIRCULATING FLUIDIZED-BEDS. Office of Scientific and Technical Information (OSTI), December 2002. http://dx.doi.org/10.2172/813624.

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Cizmas, Paul, and Antonio Palacios. A REDUCED ORDER MODEL OF TWO-PHASE FLOW, HEAT TRANSFER AND COMBUSTION IN CIRCULATING FLUIDIZED-BEDS. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/792073.

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McHugh, P. R., and J. D. Ramshaw. A computational model for viscous fluid flow, heat transfer, and melting in in situ vitrification melt pools. Office of Scientific and Technical Information (OSTI), November 1991. http://dx.doi.org/10.2172/10140275.

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McHugh, P. R., and J. D. Ramshaw. A computational model for viscous fluid flow, heat transfer, and melting in in situ vitrification melt pools. Office of Scientific and Technical Information (OSTI), November 1991. http://dx.doi.org/10.2172/5504904.

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Pruess, K. Multiphase fluid flow and heat transfer at Hanford single-shell tanks - a progress report on modeling studies. Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/764377.

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