Academic literature on the topic 'Thermal flow'

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Journal articles on the topic "Thermal flow"

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Rooney, G. G. "Descent and spread of negatively buoyant thermals." Journal of Fluid Mechanics 780 (September 7, 2015): 457–79. http://dx.doi.org/10.1017/jfm.2015.484.

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Results are presented from a numerical and analytical study of negatively buoyant thermals. The numerical study consists of large-eddy simulations of thermal descent and spread. The thermals are initiated by a spherical perturbation in the homogeneous background potential temperature. Simulations covering various release heights, thermal radii and thermal buoyancies are carried out. The analysis involves matching similarity models of a thermal and an axisymmetric gravity current, hence describing the flow evolution in terms of the initial conditions and flow coefficients only. The simulations demonstrate that the flow transition through the impingement region is relatively smooth, the main flow adjustment being in the initial post-release phase of the thermal. Comparison of the simulations and the model enables determination of the coefficients, and validation of the similarity approach to predict the radial speed, reduced gravity and depth of the spreading flow on the ground. The predictions of reduced gravity and depth also depend on quantification of the increase in gravity-current volume due to entrainment, which is obtained from the simulations.
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KUMAR, Rajesh, and Nirmal KANT SINGH. "Three dimensional flow over elliptic cylinders arrays in octagonal arrangement." Journal of Thermal Engineering 7, no. 14 (2021): 2031–40. http://dx.doi.org/10.18186/thermal.1051282.

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Donaldson, Laurie. "Metamaterials help thermal flow." Materials Today 16, no. 6 (2013): 207. http://dx.doi.org/10.1016/j.mattod.2013.06.015.

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Wu, Chun-Hui, Dongyang Kang, Ping-Hei Chen, and Yu-Chong Tai. "MEMS thermal flow sensors." Sensors and Actuators A: Physical 241 (April 2016): 135–44. http://dx.doi.org/10.1016/j.sna.2016.02.018.

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van Oudheusden, B. W. "Silicon thermal flow sensors." Sensors and Actuators A: Physical 30, no. 1-2 (1992): 5–26. http://dx.doi.org/10.1016/0924-4247(92)80192-6.

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Huijsing, J. H., A. L. C. van Dorp, and P. J. G. Loos. "Thermal mass-flow meter." Journal of Physics E: Scientific Instruments 21, no. 10 (1988): 994–97. http://dx.doi.org/10.1088/0022-3735/21/10/017.

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Azadi Kenari, Shirin, Remco J. Wiegerink, Henk-Willem Veltkamp, Remco G. P. Sanders, and Joost C. Lötters. "Thermal Flow Meter with Integrated Thermal Conductivity Sensor." Micromachines 14, no. 7 (2023): 1280. http://dx.doi.org/10.3390/mi14071280.

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This paper presents a novel gas-independent thermal flow sensor chip featuring three calorimetric flow sensors for measuring flow profile and direction within a tube, along with a single-wire flow independent thermal conductivity sensor capable of identifying the gas type through a simple DC voltage measurement. All wires have the same dimensions of 2000 μm in length, 5 μm in width, and 1.2 μm in thickness. The design theory and COMSOL simulation are discussed and compared with the measurement results. The sensor’s efficacy is demonstrated with different gases, He, N2, Ar, and CO2, for thermal conductivity and thermal flow measurements. The sensor can accurately measure the thermal conductivity of various gases, including air, enabling correction of flow rate measurements based on the fluid type. The measured voltage from the thermal conductivity sensor for air corresponds to a calculated thermal conductivity of 0.02522 [W/m·K], with an error within 2.9%.
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Bekraoui, Amina, and Ahmed Hadjadj. "Thermal flow sensor used for thermal mass flowmeter." Microelectronics Journal 103 (September 2020): 104871. http://dx.doi.org/10.1016/j.mejo.2020.104871.

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FAN, Qin Yin, Masayuki KUBA, and Junichi NAKANISHI. "Coupled Analysis of Thermal Flow and Thermal Stress." Proceedings of The Computational Mechanics Conference 2003.16 (2003): 77–78. http://dx.doi.org/10.1299/jsmecmd.2003.16.77.

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Pharas, Kunal, Stephanie Miles, and Shamus McNamara. "Thermal transpirational flow in the transitional flow regime." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 30, no. 5 (2012): 050603. http://dx.doi.org/10.1116/1.4737124.

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Dissertations / Theses on the topic "Thermal flow"

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Mok, Rachel V. (Rachel Verla). "Adiabatic thermal Child-Langmuir flow." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81613.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 211-212).<br>A simulation model is presented for the verification of the recently developed steady-state one-dimensional adiabatic thermal Child-Langmuir flow theory. In this theory, a self-consistent Poisson equation is developed through the use of the fluid-Maxwell equations and an adiabatic equation of state. The adiabatic equation of state is also a statement of normalized rms thermal emittance conservation. Solving the self-consistent Poisson equation with the appropriate boundary conditions yields the current density, electrostatic potential, fluid velocity, equilibrium density, temperature, and pressure profiles at a given cathode temperature. A one-dimensional simulation model has been developed. It consists of the initial loading, the charged-sheet model algorithm, and the post-processing of the results. Great care has been taken in the initial loading of the beam, with the beam loaded as close to the equilibrium values as possible. Because there is no known solution for the interface problem between the quantum mechanical flow of electrons inside the solid material and the classical flow of electrons in the cathode vacuum, a reinjection scheme is proposed in which the initial phase space near the cathode be maintained throughout the simulation. Three one-dimensional beams are simulated at dimensionless cathode temperatures of 0.1, 0.01, and 0.001. Great success is achieved at validating the theory at the dimensionless cathode temperature of 0.1. The simulation results for the dimensionless cathode temperature of 0.01 and 0.001 cases are consistent with the theoretical prediction. Because of the good agreement between the simulation and theory, the use of the adiabatic equation of state is justified. A strategy to extend the one-dimensional adiabatic thermal Child-Langmuir theory into two-dimensions is presented. Because two-dimensional adiabatic equation(s) of state are currently unknown, a two-dimensional simulation is used to both investigate and help formulate the adiabatic equation(s) of state. A two-dimensional simulation model has been developed to simulate flows in a Pierce gun slab geometry. The two-dimensional simulation consists of the meshing of the domain, the initial loading, the particle-in-cell algorithm, and the post-processing of the results. An estimate on the two-dimensional form of the equilibrium density is used to initially load the beam. Like the one-dimensional case, the proposed particle boundary condition for the two-dimensional simulation is that the initial phase space near the cathode be preserved throughout the simulation. Preliminary results from the two-dimensional simulation model are presented.<br>by Rachel V. Mok.<br>S.M.
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Conder, Thomas E. "Thermal and flow impact of cylindrical grooves in channel flow." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Summer2009/T_Conder_072209.pdf.

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Thesis (M.S. in mechanical engineering)--Washington State University, August 2009.<br>Title from PDF title page (viewed on Aug. 11, 2009). "Department of Mechanical Engineering." Includes bibliographical references (p. 75-76).
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Čelanović, Ivan. "Thermophotovoltaics : shaping the flow of thermal radiation." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37918.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.<br>Includes bibliographical references (p. 121-123).<br>This thesis explores the modeling, design, and optimization of photonic crystals as spectral control components for high-performance thermophotovoltaic (TPV) power conversion. In particular, we focus on the use of one-dimensional and two dimensional photonic crystals as optical filters and selective thermal emitters for thermophotovoltaic and micro-thermophotovoltaic (micro-TPV)) applications. In addition, we explore fundamental limitations of photonic crystal thermal emitters and provide new insights into the limiting power transfer mechanisms that are relevant for TPV, micro-TPV, lighting and sensor applications. Ideal thermodynamic models that capture dominant power transfer mechanism for TPV and micro-TPV case, are developed and used for the design, optimization and system performance estimation of TPV systems with photonic-crystals. Furthermore, we propose for the first time two new classes of narrow-band thermal emitters that use the resonant cavity effect. The first type of narrow-band thermal emitters rely on vertical-cavity to enhance the thermal emission of highly reflective materials (e.g metals). This class of emitters was named the vertical cavity enhanced resonant thermal emitter (VERTE).<br>(cont.) The second type of resonant thermal emitters rely on guided resonances in a two-dimensional photonic crystal slab to enhance the emittance of a high-dielectric low-absorption material (e.g. silicon). Both types of resonant thermal emission sources are quasi-monochromatic, and partially-coherent thermal sources that hold great promise for applications ranging from highly-efficient TPV systems to near-IR and IR sensors. Finally, experimentally measured spectral characteristics of fabricated one-dimensional and two-dimensional photonic-crystals show excellent correlation with simulation results. It was shown that a TPV system comprising of the proposed front-side filter and selective thermal emitter exhibits a three-fold enhancement in efficiency over the conventional TPV systems.<br>by Ivan Čelanović.<br>Sc.D.
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Wilson, N. P. "Thermal studies in sedimentary basins." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383208.

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Edwards, Thayne Lowell. "Microfrabricated Acoustic and Thermal Field-Flow Fractionation Systems." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/6981.

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Arguments for miniaturization of a thermal field-flow fractionation system ( and #956;-ThFFF) and fabrication of a micro-scale acoustic field-flow fractionation system ( and #956;-AcFFF) using similar methods was presented. Motivation for miniaturization of ThFFF systems was established by examining the geometrical scaling of the fundamental ThFFF theory. Miniaturization of conventional macro-scale ThFFF systems was made possible through utilization of micromachining technologies. Fabrication of the and #956;-ThFFF system was discussed in detail. The and #956;-ThFFF system was characterized for plate height versus flow rate, single component polystyrene retention, and multi-component polystyrene separations. Retention, thermal diffusion coefficients, and maximum diameter-based selectivity values were extracted from separation data and found comparable with macro-scale ThFFF system results. Retention values ranged from 0.33 to 0.46. Thermal diffusion coefficients were between 3.0ױ0-8 and 5.4ױ0-8 cm2/sec?? The maximum diameter-based selectivity was 1.40. While the concept of an acoustic FFF sub-technique has been around for decades, the fabrication methods have not been available until recently. The theory was developed in full including relating sample physical properties to retention time in the FFF system. In addition to the theory, the design and fabrication of the and #956;-AcFFF was presented. Design results from an acoustic modeling program were presented with the determination of the acoustic resonant frequency. The acoustic-based systems was designed around the model results and characterized by electrical input impedance, fluidic, plate height, polystyrene suspension retention, and polystyrene mixture separation studies. The and #956;-AcFFF system was able to retain a series of nanometer scale polystyrene samples. However, the retention data did not follow normal mode retention but did reveal the location of the steric inversion point for the power level used, around 200 nm. The results of the multiple component separation confirmed this results as the sample, which contained 110, 210, and 300 nm diameter samples, was not resolved but only broadened.
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Ngaza, Nyashadzashe. "Thermal field-flow fractionation (Thermal FFF) and asymmetrical flow field-flow fractionation (AF4) as new tools for the analysis of block copolymers and their respective homopolymers." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95836.

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Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Polystyrene-block-poly(ethylene oxide) (PS-b-PEO) copolymers contain a hydrophilic PEO block and a hydrophobic PS block. PS and PEO have different affinities for most organic solvents and as a result, the PS-b-PEO copolymers are difficult to characterize in solution. In order to achieve a complete characterization of their molecular heterogeneity different techniques have been used. Recently FFF has become a cutting edge technology for polymer analysis because it possesses a number of advantages over conventional SEC and other liquid chromatographic techniques. The mild operating conditions allow the analysis of delicate and sensitive complex analytes such as complex polymer assemblies. The ability to analyze polymers with ultrahigh molar masses has also contributed to its significance in the characterization of polymers. In this study, the FFF behaviour of PS-b-PEO copolymers as well as PS and PEO homopolymers was investigated using Thermal FFF in different organic solvents and AF4. The aim of the study was the correlation of the thermodynamic quality of the solvents and the elution behaviour of the polymers. Unfortunately, PEO homopolymers have been found to interact with the membrane in AF4. Therefore, they were best characterized in organic solvents using Thermal FFF. In contrast to AF4 no specific interactions occurred due to the absence of a membrane. Results for Thermal FFF showed that in all utilized solvents, PS and PEO homopolymers were separated in the direction of increasing molar mass. For PS-b-PEO copolymers the retention in selective (good) solvents for PS was dependent on the molar mass of the PS block in the block copolymer. This was explained by the fact that in poor solvents PEO adopts a collapsed coil conformation while PS is present in extended random coil conformation. Results also showed that polymer retention was dependent on the temperature programme utilized. The fractionations by Thermal FFF indicated that some of the PS-b-PEO copolymer samples contained PS and PEO homopolymers as by-products. After semi-preparative fractionation these homopolymers were qualitatively identified using FTIR spectroscopy.<br>AFRIKAANSE OPSOMMING: Polistireen-blok-poli(etileenoksied) (PS-b-PEO) ko-polimere bevat 'n hidrofiliese politetileen oksied (PEO) blok en 'n hidrofobiese polistireen (PS) blok. PS en PEO het verskillende affiniteite vir die meeste organiese oplosmiddels, dit bemoeilik die karakterisering van PS-b-PEO ko-polimere in oplossing. Ten einde 'n volledige karakterisering van hul molekulêre heterogeniteit te bepaal moet ‘n verskeidenheid van tegnieke gebruik word. Onlangs het veldvloeifraksionering (FFF) baie grond gewen tov polimeer analise, aangesien dit verskeie voordele het bo tradisionele chromatografiese tegnieke soos grootte-uitsluitingschromatografie (SEC). Die ligte operasionele omstandighede laat die ontleding van ‘n verskeidenheid van polimere toe, enige iets van delikate polimeer komplekse tot ultra hoë molekulêre massa. In hierdie studie is die FFF gedrag van PS-b-PEO ko-polimere asook PS en PEO homopolimere ondersoek met behulp van Termiese FFF(ThFFF) in verskillende organiese oplosmiddels en onsimmetriese vloei-veldvloeifraksionering(AF4). Die doel van die studie was om die verband tussen die termodinamiese gehalte van die oplosmiddels en die eluering gedrag van die polimere te bepaal. Analise van PEO homopolimere was onsuksesvol aangesien daar interaksie was met die membraan. PEO is dus net geanaliseer in organise oplosmiddels met behulp van ThFFF, aangesien daar geen membraan is nie. Analise met ThFFF het gewys dat skeiding plaasvind volgens ‘n toename in molekulêre massa in organise oplosmiddels. Vir PS-b-PEO ko-polimere die retensie in selektiewe (goeie) oplosmiddels vir PS was afhanklik van die molekulêre massa van die PS blok in die ko-polimeer. ‘n Moontlike teorie is dat die PEO blok ‘n ineengestorte spoel struktuur vorm terwyl die PS blok ‘n uitgestrekte lukraake vorm aan neem. Resultate het ook getoon dat die polimeer retensie afhanklik was van die temperatuur program wat gebruik is. Die fraksionering deur ThFFF het aangedui dat sommige van die PS-b-PEO kopolimeer monsters bestaan het uit PS en PEO homopolimere as by-produkte. Hierdie is kwalitatief bewys deur analise van die fraksies na fraksionering van die ko-polimere met behulp van FTIR spektroskopie.
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Wang, Liang. "Experimental and Computational Investigation of Thermal-Flow Characteristics of Gas Turbine Reverse-Flow Combustor." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1212.

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Reverse-flow combustors have been used in heavy land-based gas turbines for many decades. A sheath is typically installed to provide cooling at an expense of large pressure losses, through small jet impingement cooling and strong forced convention channel flow. With the modern advancement in metallurgy and thermal-barrier coating technologies, it may become possible to remove this sheath to recover the pressure losses without melting the combustor chamber. However, without the sheath, the flow inside the dump diffuser may exert nonuniform cooling on the combustion chamber. Therefore, the objective of this project is to investigate the flow pattern, pressure drop, and heat transfer in the dump-diffuser reverse-flow combustor with and without sheath to determine if the sheath could be removed. The investigation was conducted through both experimental and computational simulation. The results show that 3.3% pressure losses could be recovered and the highest wall temperature will increase 18% without the sheath.
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Gilbert, B. "Thermal mass and the effects of dynamic heat flow." Thesis, University of East London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.494488.

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Dyrdahl, Joachim. "Thermal flow in fractured porous media and operator splitting." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for matematiske fag, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25927.

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Thermal flow in fractured porous medium is an area of interest for both the oil and the geothermal energy industry. The mathematical model consists of multiple equations, often various conservation laws and constitutive relations. Solving these equations simultaneously is called the fully implicit approach, an alternative is sequential splitting. We investigate and compare these approaches, applied on incompressible and compressible cases of single-phase and two-phase fluid flow. The experiments show that the difference of the solutions between our approaches is small, and that the results from the sequentially split solver are obtained significantly faster than the fully implicit solver scheme.
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Ilic, Ognjen. "Nanophotonics for tailoring the flow of thermal electromagnetic radiation." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103227.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 117-129).<br>In this thesis, we explore the interaction of thermal radiation with nano-scale structures. First, we introduce the concept of radiative energy transfer between two objects of different temperatures in the near field, and theoretically argue that the radiation tunneling of evanescent surface modes can enable energy transfer that is orders of magnitude stronger than the energy transfer in the far field. Specifically, we develop a new computational approach-based on a finite-difference time-domain (FDTD) method that incorporates the Langevin approach to Brownian motion-which enables calculations of heat transfer for arbitrary geometries and materials. Second, we study the near-field heat transfer between two sheets of graphene and show that thermally excited plasmon-polariton modes can strongly mediate, enhance, and tune the energy exchange in this system. We predict maximum transfer at low doping and for plasmons in two graphene sheets in resonance, with orders-of-magnitude enhancement over the Stefan-Boltzmann law. Third, we develop the concept of a near-field thermophotovoltaic (NFTPV) system, and analyze several different implementations that use plasmonic materials as thermal emitters. In particular, we quantify the properties of an optimal near-field photovoltaic cell, argue that large plasmonic losses can-contrary to intuition-be helpful in enhancing the overall heat transfer, and propose and develop the concept of graphene as a tunable thermal emitter for a NFTPV system. Fourth, we tailor the far-field thermal emission from objects at high temperatures and experimentally demonstrate a method where the emission spectrum is controlled on the cold-side by implementing a nano-layer structure that surrounds the hot emitter and recycles unwanted emission. We find that this approach can enable lighting sources with luminous efficiencies close to the fundamental limit for lighting applications. Finally, we study opto-thermal effects in asymmetric nanoparticles. Specifically, we show that a type of metal-dielectric (Janus) particle in uniform light field exhibits a new class of stable rotational dynamics. We demonstrate (in a simulation) opto-thermal guiding of a composite asymmetric particle by switching the light beam frequency, without regard to the direction or the shape of the light beam.<br>by Ognjen Ilic.<br>Ph. D.
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Books on the topic "Thermal flow"

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Ene, Horia I. Thermal flow in porous media. D. Reidel Pub. Co., 1987.

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Greyling, Guilaume, and Harald Pasch. Thermal Field-Flow Fractionation of Polymers. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-10650-8.

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Kolev, Nikolay Ivanov. Multiphase Flow Dynamics 5: Nuclear Thermal Hydraulics. Springer-Verlag Berlin Heidelberg, 2012.

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United States. National Aeronautics and Space Administration., ed. Flow boiling enhancement for thermal management systems: Final report : from the Thermal Science Research Center (TSRC). National Aeronautics and Space Administration, 1998.

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United States. National Aeronautics and Space Administration., ed. Flow boiling enhancement for thermal management systems: Final report : from the Thermal Science Research Center (TSRC). National Aeronautics and Space Administration, 1998.

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Albertson, Cindy W. Aerothermal evaluation of a spherically blunted body with a trapezoidal cross section in the Langley 8-foot high-temperature tunnel. Langley Research Center, 1987.

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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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J, Johnsson Mark, and Howell D. G, eds. Thermal evolution of sedimentary basins in Alaska. U.S. G.P.O., 1996.

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Thornton, Earl A. Finite element methodology for integrated flow-thermal-structural analyses. Department of Mechanical Engineering and Mechanics, College of Engineering and Technology, Old Dominion University, 1988.

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V, Ponomarev S. Measurement of thermophysical properties by laminar flow methods. Begell House, 2000.

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Book chapters on the topic "Thermal flow"

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Potter, Merle C., and Elaine P. Scott. "Compressible Flow." In Thermal Sciences. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-63669-1_17.

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Ene, Horia. "Thermal Flow." In Interdisciplinary Applied Mathematics. Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1920-0_7.

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Anderl, Reiner, and Peter Binde. "Thermal/Flow CFD." In Simulations with NX / Simcenter 3D. Carl Hanser Verlag GmbH & Co. KG, 2018. http://dx.doi.org/10.3139/9781569907139.005.

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Kolev, Nikolay Ivanov. "Containment Thermal-Hydraulics." In Multiphase Flow Dynamics 5. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15156-4_18.

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Kolev, Nikolay Ivanov. "Core Thermal Hydraulics." In Multiphase Flow Dynamics 5. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15156-4_5.

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Kolev, Nikolay I. "Core thermal hydraulic." In Multiphase Flow Dynamics 4. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92918-5_5.

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Kolev, Nikolay Ivanov. "Core thermal hydraulics." In Multiphase Flow Dynamics 5. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20601-6_5.

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Fauchais, Pierre L., Joachim V. R. Heberlein, and Maher I. Boulos. "Gas Flow–Particle Interaction." In Thermal Spray Fundamentals. Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-68991-3_4.

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Nandagopal, PE, Nuggenhalli S. "Fluid Flow Measurements." In Fluid and Thermal Sciences. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93940-3_5.

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Zohuri, Bahman, and Nima Fathi. "Compressible Flow." In Thermal-Hydraulic Analysis of Nuclear Reactors. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17434-1_7.

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Conference papers on the topic "Thermal flow"

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Singhal, Yatharth, Daniel Honrales, Haokun Wang, and Jin Ryong Kim. "Demonstration of Thermal Flow Illusions with Tactile and Thermal Interaction." In 2024 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct). IEEE, 2024. https://doi.org/10.1109/ismar-adjunct64951.2024.00191.

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Zun, Iztok. "COMPUTATIONAL MULTISCALE FRAMEWORK FOR PREDICTING DIFFERENT FLOW REGIMES IN BUBBLY FLOW." In Thermal Sciences 2000. Proceedings of the International Thermal Science Seminar Bled. Begellhouse, 2000. http://dx.doi.org/10.1615/ichmt.2000.thersieprocvol2.160.

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Lee, J. C. "Optimization of Thermal Puffer Chambers Using Multidisciplinary Simulation Techniques." In FLOW DYNAMICS: The Second International Conference on Flow Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2204530.

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Iwaya, Akiyuki. "Relaxation Time of the Heat Bath and Thermal Conductivity." In FLOW DYNAMICS: The Second International Conference on Flow Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2204558.

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Strasser, Wayne. "Flow-Focusing and Flow-Blurring Biofuel Atomization." In 9th Thermal and Fluids Engineering Conference (TFEC). Begellhouse, 2024. http://dx.doi.org/10.1615/tfec2024.atm.050803.

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Ohta, Masato. "Thermal Effects on Current Driven Vortex Dynamics in the Corbino Disk." In FLOW DYNAMICS: The Second International Conference on Flow Dynamics. AIP, 2006. http://dx.doi.org/10.1063/1.2204562.

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Asrar, Pouya, Xuchen Zhang, Craig E. Green, et al. "Flow visualization of two phase flow of R245fa in a microgap with integrated staggered pin fins." In 2016 32nd Thermal Measurement, Modeling & Management Symposium (SEMI-THERM). IEEE, 2016. http://dx.doi.org/10.1109/semi-therm.2016.7458450.

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Guzovic, Zvonimir, Mario Baburic, and Branimir Matijasevic. "Comparison of Flow Characteristics of Centrifugal Compressors by Numerical Modelling of Flow." In Thermal Sciences 2004. Proceedings of the ASME - ZSIS International Thermal Science Seminar II. Begellhouse, 2004. http://dx.doi.org/10.1615/ichmt.2004.intthermscisemin.1120.

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Rothe, Paul H., Javier A. Valenzuela, and Bill K. H. Sun. "THERMAL MIXING FLOW VISUALIZATION." In International Heat Transfer Conference 8. Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.3370.

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Me´olans, J. Gilbert, and Irina A. Graur. "Thermal Gradient Driven Flow." In ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30042.

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Abstract:
A thermal creep process is studied in a wide rectangular micro channel considered as two infinite parallel plates. The inlet and outlet reservoirs are kept at the same constant pressure. A constant temperature gradient exists along the walls of the channel joining the two tanks. Thus a gas flow is induced and thermally sustained until steady conditions are reached. A complete steady analytical solution is derived in slip regime for Knudsen numbers smaller than 0.25. The analytical results are in good agreement with the numerical “exact” solution of the continuum equations system. Furthermore our continuum approach results are compared to those deduced from the approaches based on the Boltzmann equation model treatments: these various methods lead generally to a satisfactory agreement between their respective mean parameters. Nevertheless significant differences appear on the transversal velocity profiles in the close vicinity of the wall.
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Reports on the topic "Thermal flow"

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O'Byrne, Sean, S. L. Gai, T. Kaseman, Y. Krishna, H. H. Kleine, and A. Neely. Thermal Nonequilibrium in Hypersonic Separated Flow. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada614176.

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George and Hawley. PR-015-09605-R01 Extended Low Flow Range Metering. Pipeline Research Council International, Inc. (PRCI), 2010. http://dx.doi.org/10.55274/r0010728.

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Natural gas meters are often used to measure flows below their minimum design flow rate. This can occur because of inaccurate flow projections, widely varying flow rates in the line, a lack of personnel available to change orifice plates, and other causes. The use of meters outside their design ranges can result in significant measurement errors. The objectives of this project were to examine parameters that contribute to measurement error at flow rates below 10% of a meters capacity, determine the expected range of error at these flow rates, and establish methods to reduce measurement error in this range. The project began with a literature search of prior studies of orifice, turbine, and ultrasonic meters for background information on their performance in low flows. Two conditions affecting multiple meter types were identified for study. First, temperature measurement errors in low flows can influence the accuracy of all three meter types, though the effect of a given temperature error can differ among the meter types. Second, thermally stratified flows at low flow rates are known to cause measurement errors in ultrasonic meters that cannot compensate for the resulting flow profiles, and the literature suggested that these flows could also affect orifice plates and turbine meters. Several possible ways to improve temperature measurements in low flows were also identified for further study. Next, an analytical study focused on potential errors due to inaccurate temperature measurements. Numerical tools were used to model a pipeline with different thermowell and RTD geometries. The goals were to estimate temperature measurement errors under different low-flow conditions, and to identify approaches to minimize temperature and flow rate errors. Thermal conduction from the pipe wall to the thermowell caused the largest predicted bias in measured temperature, while stratified temperatures in the flow caused relatively little temperature bias. Thermally isolating the thermowell from the pipe wall, or using a bare RTD, can minimize temperature bias, but are not usually practical approaches. Insulation of the meter run and the use of a finned thermowell design were practical methods predicted to potentially improve measurement accuracy, and were chosen for testing.
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Lakis, Rollin, and Alessandro Cattaneo. Noninvasive Thermal Mass Flow Meter for Safeguards. Office of Scientific and Technical Information (OSTI), 2025. https://doi.org/10.2172/2506974.

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Doughty, Christine, and Kenzi Karasaki. Evaluation of uncertainties due to hydrogeological modeling and groundwater flow analysis: Steady flow, transient flow, and thermal studies. Office of Scientific and Technical Information (OSTI), 2002. http://dx.doi.org/10.2172/808936.

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Taiwo, T., and T. K. Kim. Renormalization of Mass Flow Data in FCDPs for Thermal Efficiency Variation Thermal Efficiency Variation. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1090191.

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Tajima, T., W. Horton, J. Q. Dong, and Y. Kishimoto. Shear flow effects on ion thermal transport in tokamaks. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/42486.

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Alvin, M. A., J. E. Lane, and T. E. Lippert. Thermal/chemical degradation of ceramic cross-flow filter materials. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5970659.

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Starr, T. L., and A. W. Smith. Modeling of forced flow/thermal gradient chemical vapor infiltration. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/7038514.

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Starr, T. L., and A. W. Smith. Modeling of forced flow/thermal gradient chemical vapor infiltration. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/10185554.

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STEIMKE, JOHN. Measurement of Thermal Diffusity and Flow Resistance for TCAP Materials. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/835064.

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