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Relevant bibliographies by topics / Modeling of heat flows

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Academic literature on the topic 'Modeling of heat flows'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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Journal articles on the topic "Modeling of heat flows"

1

Chen, C. J., W. Lin, Y. Haik, and K. D. Carlson. "Modeling of complex flows and heat transfer." Journal of Visualization 1, no. 1 (1998): 51–63. http://dx.doi.org/10.1007/bf03182474.

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Statharas, John C., John G. Bartzis, and Demosthenes D. Papailiou. "Heat Transfer Modeling in Low Flows and Application to Reflood Heat Transfer." Nuclear Technology 92, no. 2 (1990): 248–59. http://dx.doi.org/10.13182/nt90-a34476.

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3

Thakre, S. S., and J. B. Joshi. "CFD modeling of heat transfer in turbulent pipe flows." AIChE Journal 46, no. 9 (2000): 1798–812. http://dx.doi.org/10.1002/aic.690460909.

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4

Peskova, E. E. "Numerical modeling of subsonic axisymmetric reacting gas flows." Journal of Physics: Conference Series 2057, no. 1 (2021): 012071. http://dx.doi.org/10.1088/1742-6596/2057/1/012071.

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Abstract A numerical algorithm is developed and implemented for modelling axisymmetric subsonic reacting gas flows based on a previously created program for plane flows. The system of Navier-Stokes equations in the low Mach number limit is used as a mathematical model. Calculations of ethane pyrolysis for axisymmetric and plane flow of mixture at heat supply from the reactor’s walls are carried out. Through the interplay of the developed code and the code for plane flows it becomes possible to identify the geometric factor role at the presence of a large number of nonlinear physicochemical processes. We found that diffusion of synthesized molecular hydrogen mainly influences heat supply from the reactor’s walls to gas and pyrolysis products distribution along its length.

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Keyhani, M., and R. A. Polehn. "Finite Difference Modeling of Anisotropic Flows." Journal of Heat Transfer 117, no. 2 (1995): 458–64. http://dx.doi.org/10.1115/1.2822544.

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A modification to the finite difference equations is proposed in modeling multidimensional flows in an anisotropic material. The method is compared to the control volume version of the Taylor expansion and the finite element formulation derived from the Galerkin weak statement. For the same number of nodes, the proposed finite difference formulation approaches the accuracy of the finite element method. For the two-dimensional case, the effect on accuracy and solution stability is approximately the same as quadrupling the number of nodes for the Taylor expansion with only a proportionately small increase in the number of computations. Excellent comparisons are made with a new limiting case exact solution modeling anisotropic heat conduction and a transient, anisotropic conduction experiment from the literature.

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Wood, Brian D., Xiaoliang He, and Sourabh V. Apte. "Modeling Turbulent Flows in Porous Media." Annual Review of Fluid Mechanics 52, no. 1 (2020): 171–203. http://dx.doi.org/10.1146/annurev-fluid-010719-060317.

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Turbulent flows in porous media occur in a wide variety of applications, from catalysis in packed beds to heat exchange in nuclear reactor vessels. In this review, we summarize the current state of the literature on methods to model such flows. We focus on a range of Reynolds numbers, covering the inertial regime through the asymptotic turbulent regime. The review emphasizes both numerical modeling and the development of averaged (spatially filtered) balances over representative volumes of media. For modeling the pore scale, we examine the recent literature on Reynolds-averaged Navier–Stokes (RANS) models, large-eddy simulation (LES) models, and direct numerical simulations (DNS). We focus on the role of DNS and discuss how spatially averaged models might be closed using data computed from DNS simulations. A Darcy–Forchheimer-type law is derived, and a prior computation of the permeability and Forchheimer coefficient is presented and compared with existing data.

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Hasan, A. R., and C. S. Kabir. "Modeling two-phase fluid and heat flows in geothermal wells." Journal of Petroleum Science and Engineering 71, no. 1-2 (2010): 77–86. http://dx.doi.org/10.1016/j.petrol.2010.01.008.

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Hachem, E., G. Jannoun, J. Veysset, et al. "Modeling of heat transfer and turbulent flows inside industrial furnaces." Simulation Modelling Practice and Theory 30 (January 2013): 35–53. http://dx.doi.org/10.1016/j.simpat.2012.07.013.

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Yao, Xiaobo, and André W. Marshall. "Quantitative Salt-Water Modeling of Fire-Induced Flows for Convective Heat Transfer Model Development." Journal of Heat Transfer 129, no. 10 (2007): 1373–83. http://dx.doi.org/10.1115/1.2754943.

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This research provides a detailed analysis of convective heat transfer in ceiling jets by using a quantitative salt-water modeling technique. The methodology of quantitative salt-water modeling builds on the analogy between salt-water flow and fire induced flow, which has been successfully used in the qualitative analysis of fires. Planar laser induced fluorescence and laser doppler velocimetry have been implemented to measure the dimensionless density difference and velocity in salt-water plumes. The quantitative salt-water modeling technique has been validated through comparisons of appropriately scaled salt-water measurements, fire measurements, and theory. This analogy has been exploited to develop an engineering heat transfer model for predicting heat transfer in impinging fire plumes using salt-water measurements along with the adiabatic wall modeling concept. Combining quantitative salt-water modeling and adiabatic wall modeling concepts introduces new opportunities for studying heat transfer issues in basic and complex fire induced flow configurations.

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Zaichik, L. I., V. A. Pershukov, M. V. Kozelev, and A. A. Vinberg. "Modeling of dynamics, heat transfer, and combustion in two-phase turbulent flows: 2. Flows with heat transfer and combustion." Experimental Thermal and Fluid Science 15, no. 4 (1997): 311–22. http://dx.doi.org/10.1016/s0894-1777(96)00201-4.

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Dissertations / Theses on the topic "Modeling of heat flows"

1

Yao, Guang-Fa. "Numerical modeling of condensing two-phase channel flows." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/17678.

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Pond, Ian. "Toward an Understanding of the Breakdown of Heat Transfer Modeling in Reciprocating Flows." ScholarWorks @ UVM, 2015. http://scholarworks.uvm.edu/graddis/477.

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Reynolds average Navier-Stokes (RANS) modeling has established itself as a critical design tool in many engineering applications, thanks to its superior computational efficiency. The drawbacks of RANS models are well known, but not necessarily well understood: poor prediction of transition, non-equilibrium flows, mixing and heat transfer, to name the ones relevant to our study. In the present study, we use a direct numerical simulation (DNS) of a reciprocating channel flow driven by an oscillating pressure gradient to test several low- and high-Reynolds' RANS models. Temperature is introduced as a passive scalar to study heat transfer modeling. Low-Reynolds' models manage to capture the overall physics of wall shear and heat flux well, yet with some phase discrepancies, whereas high-Reynolds' models fail. We have derived an integral method for wall shear and wall heat flux analysis, which reveals the contributing terms for both metrics. This method shows that the qualitative agreement appears more serendipitous than driven by the ability of the models to capture the correct physics. The integral method is shown to be more insightful in the benchmarking of RANS models than the typical comparisons of statistical quantities. This method enables the identification of the sources of discrepancies in energy budget equations. For instance, in the wall heat flux, one model is shown to have an out of phase dynamic behavior when compared to the benchmark results, demonstrating a significant issue in the physics predicted by this model. Our study demonstrates that the integral method applied to RANS modeling yields information not previously available that should guide the derivation of physically more accurate models.

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Preston, Alastair Thomas Colonius Timothy E. "Modeling heat and mass transfer in bubbly cavitating flows and shock waves in cavitating nozzles /." Diss., Pasadena, Calif. : California Institute of Technology, 2004. http://resolver.caltech.edu/CaltechETD:etd-12182003-150738.

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Vincent, Tyler Graham. "Total Temperature Probe Performance for Subsonic Flows using Mixed Fidelity Modeling." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/88867.

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An accurate measurement of total temperature in turbomachinery flows remains critical for component life models and cycle performance optimization. While many techniques exist to measure these flows, immersed thermocouple based probes remain highly desirable due to well established practices for probe design and implementation in typical industrial flow applications. However, as engine manufacturers continue to push towards higher maximum cycle temperatures and smaller flow passages, the continued use of these probes requires new probe designs considering both improved sensor durability and measurement accuracy. Increased maximum temperatures introduce many challenges for total temperature measurements using conventional immersed probes, including increased influences of conduction, convection, and radiation heat transfer between the sensor, fluid and the surroundings due to large thermal gradients present in real turbomachinery systems. While these effects have been previously investigated, the available design models are very limited to specific geometries and flow conditions. In this Dissertation, a more fundamental understanding of the flow behavior around typical vented shield style total temperature probes as a function of probe geometry and operating condition is gained using results from high-fidelity Computational Fluid Dynamics simulations with Conjugate Heat Transfer. A parametric study was conducted considering three non-dimensional probe geometric ratios (vent location to shield length (0.029-0.806), sensor diameter to shield inner diameter (0.252-0.672), and shield outer diameter to strut/mount thickness (0.245-0.759)) and three operating conditions (total temperature (70, 850, 2500°F) and pressure (1, 1, 10 atm), respectively) at a moderate Mach number of 0.4. Results were further quantified in the form of new empirical correlations necessary for rapid thermal performance evaluations of current and future probe designs. Additionally, a new mixed-fidelity or Reduced Order Modeling technique was developed which allows the coupling of high fidelity surface heat transfer data from CFD with a generalized form of the 1-D conducting solid equations for evaluating radiation and transient influences on sensor performance. These new flow and heat transfer correlations together with the new Reduced Order Modeling technique developed here greatly enhance the capabilities of designers to evaluate performance of current and future probe designs, with higher accuracy and with significant reductions in computational resources.<br>Doctor of Philosophy<br>An accurate measurement of total temperature in turbomachinery flows remains critical for component life models and cycle performance optimization. While many techniques exist to measure these flows, immersed thermocouple based probes remain highly desirable due to well established practices for probe design and implementation in typical industrial flow applications. However, as engine manufacturers continue to push towards higher maximum cycle temperatures and smaller flow passages, the continued use of these probes requires new probe designs considering both improved sensor durability and measurement accuracy. Increased maximum temperatures introduce many challenges for total temperature measurements using conventional immersed probes, including increased influences of conduction, convection, and radiation heat transfer between the sensor, fluid and the surroundings due to large thermal gradients present in real turbomachinery systems. While these effects have been thoroughly described and quantified in the past, the available design models are very limited to specific geometries and flow conditions. In this Dissertation, a more fundamental understanding of the flow behavior around typical vented shield style total temperature probes as a function of probe geometry and operating condition is gained using results from high-fidelity Computational Fluid Dynamics simulations with Conjugate Heat Transfer (CHT) capabilities. Results were further quantified in the form of new empirical correlations necessary for rapid thermal performance evaluations of current and future probe designs. Additionally, a new mixed-fidelity or Reduced Order Modeling (ROM) technique was developed which allows the coupling of high fidelity surface heat transfer data from CFD with a generalized form of the 1-D conducting solid equations for readily predicting the impact of radiation environment and transient errors on sensor performance.

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Liao, Meng. "Modeling of fluid flows and heat transfer with interface effects, from molecular interaction to porous media." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1054/document.

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Les objectifs de la thèse sont d'étudier le transport de fluide et le transfert de chaleur dans les pores micro et nanométriques. Les expériences et les simulations ont révélé des preuves de l'augmentation du flux provoquée par la vitesse de glissement à la paroi solide. D'autre part, la résistance thermique finie à l'interface fluide-solide est responsable de la différence de température des deux phases. Ces deux phénomènes d'interface peuvent avoir un impact considérable sur la perméabilité et la diffusivité thermique des milieux poreux constitués de micro et nanopores. La contribution se concentre sur l'étude des trois problèmes suivants. Premièrement, nous examinons les effets de glissement des liquides confinés dans un canal de graphème en utilisant le formalisme de Green Kubo et la méthode de la dynamique moléculaire. On montre que lorsque la surface solide est soumise à une contrainte mécanique uniaxiale, la friction présente une anisotropie due à la modification de l'énergie potentielle et de la dynamique des molécules composant le fluide. Les formes moléculaires jouent également un rôle important sur les écarts de frottement entre les deux directions principales. Deuxièmement, nous étudions le régime des gaz raréfiés. Dans ce cas, la vitesse de glissement et le saut de température sont régis par les collisions entre les atomes de gaz et la paroi solide. Ces effets peuvent être déterminés à l’aide d’un modèle statistique qui peut être construit à partir des vitesses incidente et réfléchie des molécules de gaz. A cette fin, différentes méthodes basées sur des techniques d'apprentissage statistique ont été proposées. Enfin, la méthode des éléments finis est utilisée pour calculer la perméabilité et la diffusivité thermique des milieux poreux sous l'influence des effets d'interface<br>The objectives of the thesis are to study the fluid transport and heat transfer in micro and nano-scale pores. Both experiments and simulations revealed evidence of an enhancement of flow-rate, originated from slip velocity at the solid boundary. On the other hand, the finite thermal resistance at the fluid-solid interface is responsible for the temperature difference between the two phases. These two interface phenomena can have a considerable impact on the permeability and thermal diffusivity of porous media constituted of micro and nano-pores. This contribution focuses on studying the following three issues. First, we examine the slip effects of liquids confined in graphene channel using Green Kubo formalism and Molecular Dynamics method. It is shown that when the solid surface is subject to mechanical uniaxial strain, the friction exhibits anisotropy due to the modification of the potential energy and the dynamics of the fluid molecules. The molecular shapes also play an important factor on the friction discrepancies between two principal directions. The quantification of both effects is addressed. Second, we investigate the rarefied gas regime. In this case, the velocity slip and temperature jump are governed by the collisions between the gas and the solid boundary. Those effects can be determined via the study of scattering kernel and its construction from MD simulation data. To this end, different methods based on statistical learning techniques have been proposed including the nonparametric (NP) kernel and Gaussian mixture (GM) kernel. Finally, the finite element method is used to compute the permeability and the thermal diffusivity of porous media under the influence of the interface effects

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You, Lishan. "Computational Modeling of Laminar Swirl Flows and Heat Transfer in Circular Tubes with Twisted-Tape Inserts." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1029525889.

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Huzayyin, Omar A. "Computational Modeling of Convective Heat Transfer in Compact and Enhanced Heat Exchangers." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1313754781.

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8

Khan, Waqar. "Modeling of Fluid Flow and Heat Transfer for Optimization of Pin-Fin Heat Sinks." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/947.

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In this study, an entropy generation minimization procedure is employed to optimize the overall performance (thermal and hydrodynamic) of isolated fin geometries and pin-fin heat sinks. This allows the combined effects of thermal resistance and pressure drop to be assessed simultaneously as the heat sink interacts with the surrounding flow field. New general expressions for the entropy generation rate are developed using mass, energy, and entropy balances over an appropriate control volume. The formulation for the dimensionless entropy generation rate is obtained in terms of fin geometry, longitudinal and transverse pitches, pin-fin aspect ratio, thermal conductivity, arrangement of pin-fins, Reynolds and Prandtl numbers. It is shown that the entropy generation rate depends on two main performance parameters, i. e. , thermal resistance and the pressure drop, which in turn depend on the average heat transfer and friction coefficients. These coefficients can be taken from fluid flow and heat transfer models. An extensive literature survey reveals that no comprehensive analytical model for any one of them exists that can be used for a wide range of Reynolds number, Prandtl number, longitudinal and transverse pitches, and thermal conductivity. This study is one of the first attempts to develop analytical models for the fluid flow and heat transfer from single pins (circular and elliptical) with and without blockage as well as pin-fin arrays (in-line and staggered). These models can be used for the entire laminar flow range, longitudinal and transverse pitches, any material (from plastic composites to copper), and any fluid having Prandtl numbers (≥0. 71). In developing these models, it is assumed that the flow is steady, laminar, and fully developed. Furthermore, the heat sink is fully shrouded and the thermophysical properties are taken to be temperature independent. Using an energy balance over the same control volume, the average heat transfer coefficient for the heat sink is also developed, which is a function of the heat sink material, fluid properties, fin geometry, pin-fin arrangement, and longitudinal and transverse pitches. The hydrodynamic and thermal analyses of both in-line and staggered pin-fin heat sinks are performed using parametric variation of each design variable including pin diameter, pin height, approach velocity, number of pin-fins, and thermal conductivity of the material. The present analytical results for single pins (circular and elliptical) and pin-fin-arrays are in good agreement with the existing experimental/numerical data obtained by other investigators. It is shown that the present models of heat transfer and pressure drop can be applied for a wide range of Reynolds and Prandtl numbers, longitudinal and transverse pitches, aspect ratios, and thermal conductivity. Furthermore, selected numerical simulations for a single circular cylinder and in-line pin-fin heat sink are also carried out to validate the present analytical models. Results of present numerical simulations are also found to be in good agreement.

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Moglan, Raluca. "Modeling and numerical simulation of flow and heat phenomena in a telecommunication heat cabinet." Rouen, 2013. http://www.theses.fr/2013ROUES060.

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Nous proposons dans cette étude une nouvelle approche 3D pour la résolution des équations de Navier-Stokes incompressibles sous l’approximation de Boussinesq. La nouveauté du code développé est l’utilisation des méthodes d’ordre élevé pour l’intégration en temps (schéma de Runge-Kutta à l’ordre trois) et pour la discrétisation spatiale (schéma aux différences finies à l’ordre six). Une étude de l’ordre de la méthode numérique a été faite, suivie par une validation détaillée pour plusieurs cas de convection naturelle. Une méthode d’éléments finis été développée pour le même problème, codée avec FreeFem++, et validée pour les mêmes cas de convection naturelle. Nous avons considéré ensuite le cas d’une armoire de télécommunications, modélisée sous la forme d’un domaine rectangulaire, avec des objets (obstacles) intérieurs, représentés par une méthode de type frontière immergée. Cette méthode a été validée par rapport aux cas existants dans la littérature et par rapport aux résultats obtenus avec le code éléments finis (qui représente exactement les obstacles). Nous présentons des résultats pour plusieurs configurations, avec des obstacles chauffants placés différemment à l’intérieur de la cavité. Une comparaison avec les mesures expérimentales effectuées dans une armoire avec deux composantes dissipant de la chaleur est aussi effectuée. Le code de type éléments finis est finalement développé et testé pour simuler des matériaux à changement de phase<br>In this thesis we present a new 3D approach for solving the incompressible Navier-Stokes equations under the Boussinesq approximation. The advantage of the developed numerical code is the use of high order methods for time integration (3rd order Runge-Kutta method) and spatial discretization (6th order finite difference schemes). A study of the order of the numerical method was made, followed by an extensive validation for several cases of natural convection. A finite element simulation code for the same problem was developed using FreeFem++, and was validated with respect to the same cases of natural convection. The case of a telecommunication cabinet was treated by modelling interior obstacles generating heat using an immersed boundary method. This method was validated with respect to the finite element simulation, and many other cases from the literature. We present the results for different 2D and 3D configurations, with obstacles differently placed inside the cavity. Results are also presented for the comparison with experimental measurements in a cabinet with two components dissipating heat. The finite element code is finally extended and tested to simulate phase change materials that could serve as passive cooling devices

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Momeni, Parham. "Modelling the Effect of Pulsation on Flow and Heat Transfer in Turbulent Separated and Reattaching Flows." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492875.

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The focus of this thesis is on the response of separated turbulent flows to imposed unsteadiness in the form of pulsation. There are substantial modelling challenges in imputing flows exhibiting even steady separation and reattachment. Furthermore, to minimise computing times - particularly important in unsteady flows, given the requirement to perform a large number of time steps - there is a desire to use relatively simple RANS models of turbulence. However, simple linear eddy-viscosity models are known to perform badly in separated flows, hi this study refinements are introduced to both a non-linear eddy-viscosity (Craft et al; 2005) scheme and a DSM model (lacovides and Raisee; 1999) and these are shown to perform quite successfully in predicting the steady state flow and heat transfer through a sudden pipe-expansion. The main aim of current study is to then asses the performance of these models in computing three types of forced unsteady separated flows.

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Books on the topic "Modeling of heat flows"

1

Yeoh, Guan Heng. Modelling subcooled boiling flows. Nova Science Publishers, 2008.

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Gombosi, Tamás I. Modeling of nonequilibrium space plasma flows. The University of Michigan, Dept. of Atmospheric, Oceanic, and Space Science, Space Physics Research Laboratory, 1995.

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Cabezas-Gómez, Luben, Hélio Aparecido Navarro, and José Maria Saíz-Jabardo. Thermal Performance Modeling of Cross-Flow Heat Exchangers. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-09671-1.

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Shevchuk, Igor V. Modelling of Convective Heat and Mass Transfer in Rotating Flows. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20961-6.

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Schmidt, Rodney C. Two-equation low-Reynolds-number turbulence modeling of transitional boundary layer flows characteristic of gas turbine blades. Lewis Research Center, 1988.

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Wang, Chi R. Application of turbulence modeling to predict surface heat transfer in stagnation flow region of circular cylinder. Lewis Research Center, 1987.

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Efremov, German. Modeling of chemical and technological processes. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1090526.

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In an accessible form, the textbook presents the theoretical foundations of physical and mathematical modeling; considers the modeling of mass, heat and momentum transfer processes, the relationship and analogy between them; studies the theory of similarity, its application in modeling, models of the structure of flows in apparatuses. Experimental-statistical and experimental-analytical modeling methods are also described, which include "black box" methods, planning passive, active full and fractional factor experiments, and adjusting models based on the results of the experiment. At the same time, modeling of chemical reactors, methods of optimization of chemical-technological processes, their selection, comparison and application examples are considered. Examples of modeling and optimization of processes in chemical, petrochemical and biotechnology on a computer in Excel and MathCAD environments are given. The appendices provide the basics of working in the MathCAD environment and elements of matrix algebra. Meets the requirements of the Federal state educational standards of higher education of the latest generation. It is intended for bachelors who are trained for the chemical, petrochemical, food, textile and light industries. It can be useful for specialists and undergraduates, as well as for scientists, engineers and postgraduates dealing with the problem under consideration.

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Walton, William C. Practical aspects of groundwater modeling: Flow, mass and heat transport, and subsidence : analytical and computer models. 3rd ed. National Water Well Association, 1988.

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Walton, William C. Practical aspects of groundwater modeling: Flow, mass and heat transport, and subsidence : analytical and computer models. 2nd ed. National Water Well Association, 1985.

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Walton, William Clarence. Practical aspects of groundwater modeling: Flow, mass and heat transport, and subsidence : analytical and computer models. 2nd ed. National Water Well Association, 1985.

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Book chapters on the topic "Modeling of heat flows"

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Sidebotham, George. "Internal Flows Models." In Heat Transfer Modeling. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14514-3_11.

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Morel, Christophe. "Interfacial Heat and Mass Transfers." In Mathematical Modeling of Disperse Two-Phase Flows. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20104-7_9.

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Borghi, Roland, and Fabien Anselmet. "Modeling Turbulent Dispersion Fluxes." In Turbulent Multiphase Flows with Heat and Mass Transfer. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118790052.ch6.

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Borghi, Roland, and Fabien Anselmet. "The Modeling of Interphase Exchanges." In Turbulent Multiphase Flows with Heat and Mass Transfer. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118790052.ch5.

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Borghi, Roland, and Fabien Anselmet. "Modeling the Kinetic Cauchy Stress Tensor." In Turbulent Multiphase Flows with Heat and Mass Transfer. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118790052.ch15.

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Mamut, E. "Modeling Single-Phase Flows in Micro Heat Exchangers." In Emerging Technologies and Techniques in Porous Media. Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-94-007-0971-3_23.

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Borghi, Roland, and Fabien Anselmet. "Modeling of Cauchy Tensor of Sliding Contacts." In Turbulent Multiphase Flows with Heat and Mass Transfer. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118790052.ch14.

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Hantschel, Thomas, and Armin I. Kauerauf. "Heat Flow Analysis." In Fundamentals of Basin and Petroleum Systems Modeling. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-72318-9_3.

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Majumdar, Pradip. "Turbulent Flow Modeling." In Computational Fluid Dynamics and Heat Transfer, 2nd ed. CRC Press, 2021. http://dx.doi.org/10.1201/9780429183003-10.

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Borghi, Roland, and Fabien Anselmet. "Modeling the Mean Gas-Liquid Interface Area per Unit Volume." In Turbulent Multiphase Flows with Heat and Mass Transfer. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118790052.ch7.

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Conference papers on the topic "Modeling of heat flows"

1

Abraham, J. P., E. M. Sparrow, J. C. K. Tong, and W. J. Minkowycz. "Intermittent Flow Modeling: Part 2—Time-Varying Flows and Flows in Variable Area Ducts." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22696.

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The all-flow-regime model of fluid flow, previously applied in [1] to flows with axially and temporally uniform Reynolds numbers, has been implemented here for flows in which the Reynolds number may either vary with time or along the length of a pipe. In the former situation, the timewise variations were driven by a harmonically oscillating inlet flow. These oscillations created a succession of flow-regime transitions encompassing purely laminar and purely turbulent flows as well as laminarizing and turbulentizing flows where intermittency prevailed. The period of the oscillations was increased parametrically until the quasi-steady regime was attained. The predicted quasi-steady friction factors were found to be in excellent agreement with those from a simple model under which the flow is assumed to pass through a sequence of instantaneous steady states. In the second category of non-constant-Reynolds-number flows, axial variations of a steady flow were created by means of a finite-length conical enlargement which connected a pair of pipes of constant but different diameters. The presence of the cross-sectional enlargement gives rise to a reduction of the Reynolds number that is proportional to the ratio of the diameters of the upstream and the downstream pipes. Depending on the magnitude of the upstream inlet Reynolds number, the downstream fully developed flow could variously be laminar, intermittent, or turbulent. The presence or absence of flow separation in the conical enlargement had a direct effect on the laminarization process. For both categories of non-constant-Reynolds-number flows, laminarization and turbulentization were quantified by the ratio of the rate of turbulence production to the rate of turbulence destruction.

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2

Abraham, J. P., E. M. Sparrow, J. C. K. Tong, and W. J. Minkowycz. "Intermittent Flow Modeling: Part I—Hydrodynamic and Thermal Modeling of Steady, Intermittent Flows in Constant Area Ducts." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22858.

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A model for predicting fluid flow and convective heat transfer in all flow regimes has been implemented for steady mainflows in pipes and ducts of constant cross section. The key feature of the model is its capability to predict transitions between purely laminar and purely turbulent flow, while the latter flows are also predicted with high accuracy. The flow regime need not be specified in advance but is determined automatically as the flow evolves during its passage along the pipe or duct. Intermittently in the transition regime is fully accounted. It was shown that fully developed flows are necessarily restricted to either the laminar regime or the turbulent regime, but that a fully developed intermittent regime exists. The effects of the flow conditions at the inlet of the pipe or duct, velocity profile shape and turbulence intensity, on the subsequent transitions were quantified. To facilitate the heat transfer analysis, the turbulent-Prandtl-number concept, widely used to inter-relate the turbulent viscosity and thermal conductivity, was extended to encompass both intermittent and laminar flows. The presented results include all-flow-regime fully developed friction factors and fully developed Nusselt numbers. The locations where laminar-flow breakdown occurs and where fully developed begins are also presented.

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3

Anglart, Henryk, and Michael Z. Podowski. "On the multidimensional modeling of gas-liquid slug flows." In International Heat Transfer Conference 12. Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.2400.

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4

Alipchenkov, Vladimir M., Artur R. Avetissian, Frederic Déjean, Jean Marc Dorey, V. Maupu, and Leonid I. Zaichik. "Modeling of spontaneously condensing steam flows in transonic nozzles." In International Heat Transfer Conference 12. Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.580.

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5

Nijhawan, Sandeep, Graham Candler, Deepak Bose, and Iain Boyd. "Improved continuum modeling of low density hypersonic flows." In 6th Joint Thermophysics and Heat Transfer Conference. American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-1956.

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6

Shih, Tsan-Hsing, and Nan-Suey Liu. "Modeling of Internal Reacting flows and External Static Stall Flows Using RANS and PRNS." In Turbulence, Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer. Begellhouse, 2006. http://dx.doi.org/10.1615/ichmt.2006.turbulheatmasstransf.1240.

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7

Spall, Robert E., Adam Richards, and Donald M. McEligot. "Numerical Modeling of Strongly Heated Internal Gas Flows." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56107.

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The v2–f turbulence model was used to model an axisymmetric, strongly heated, low Mach number gas flowing upward within a vertical tube in which forced convection was dominant. The heating rates were sufficiently high so that fluid properties varied significantly in both axial and radial directions; consequently, fully developed mean flow profiles did not evolve. Results using both constant and variable turbulent Prandtl number approximations in the energy equation were obtained. Comparisons between computational results, and experimental results which exist in the literature, revealed that the v2–f model performed quite well in predicting axial wall temperatures, and mean velocity and temperature profiles. This result may be contrasted with most two-equation model results appearing in the literature for which the wall heat transfer rates are significantly over predicted.

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8

Ibrahim, Mounir, Christopher Bauer, Terrence W. Simon, and Songgang Qiu. "MODELING OSCILLATORY LAMINAR, TRANSITIONAL AND TURBULENT CHANNEL FLOWS AND HEAT TRANSFER." In International Heat Transfer Conference 10. Begellhouse, 1994. http://dx.doi.org/10.1615/ihtc10.2850.

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9

Josyula, Eswar, William Bailey, and V. S. Gudimetla. "Modeling of Thermal Dissociation in Nonequilibrium Hypersonic Flows." In 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-3421.

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10

Mansouri, Jed, Samah Maalej, Mohamed Ben Hassine Sassi, and Mohamed Chaker Zaghdoudi. "Numerical analysis of flows and heat transfer within grooved Flat Mini Heat Pipes." In 2013 5th International Conference on Modeling, Simulation and Applied Optimization (ICMSAO 2013). IEEE, 2013. http://dx.doi.org/10.1109/icmsao.2013.6552692.

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Reports on the topic "Modeling of heat flows"

1

Pasinato, Hugo D. Computation and Modeling of Heat Transfer in Wall-Bounded Turbulent Flows. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada563677.

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2

Siefken, Larry James, Eric Wesley Coryell, Seungho Paik, and Han Hsiung Kuo. SCDAP/RELAP5 Modeling of Heat Transfer and Flow Losses in Lower Head Porous Debris. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/911507.

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3

Siefken, Larry James, Eric Wesley Coryell, Seungho Paik, and Han Hsiung Kuo. SCDAP/RELAP5 Modeling of Heat Transfer and Flow Losses in Lower Head Porous Debris. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/911971.

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4

Siefken, Larry James, Eric Wesley Coryell, Seungho Paik, and Han Hsiung Kuo. SCDAP/RELAP5 Modeling of Heat Transfer and Flow Losses in Lower Head Porous Debris. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/911026.

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5

E. W. Coryell, L. J. Siefken, and S. Paik. SCDAP/RELAP5 Modeling of Heat Transfer and Flow Losses in Lower Head Porous Debris. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/5766.

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6

Raustad, Richard, Bereket Nigusse, and Ron Domitrovic. Technical Subtopic 2.1: Modeling Variable Refrigerant Flow Heat Pump and Heat Recovery Equipment in EnergyPlus. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1104926.

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7

Siefken, L. J., E. W. Coryell, S. Paik, and H. Kuo. SCDAP/RELAP5 modeling of heat transfer and flow losses in lower head porous debris. Revision 1. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/751981.

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8

Y. Wu, S. Mukhopadhyay, K. Zhang, and G.S. Bodvarsson. MODELING COUPLED PROCESSES OF MULTIPHASE FLOW AND HEAT TRANSFER IN UNSATURATED FRACTURED ROCK. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/884907.

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9

Pawel, R. E., and D. W. Yarbrough. Modeling heat generation and flow in the Advanced Neutron Source Corrosion Test Loop specimen. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/5560520.

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10

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), 2003. http://dx.doi.org/10.2172/809609.

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