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Relevant bibliographies by topics / Parallel heat flux

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Academic literature on the topic 'Parallel heat flux'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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Journal articles on the topic "Parallel heat flux"

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Jing, Tingting, Guoqiang He, Fei Qin, Wenqiang Li, Duo Zhang, and Minghao Wang. "Flow Distribution Characteristics of Supercritical Hydrocarbon Fuel in Parallel Channels with Pyrolysis." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 1 (2019): 1–6. http://dx.doi.org/10.1051/jnwpu/20193710001.

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Due to the asymmetric geometry of flowpath and combustion organization, the heat flux distribution on RBCC's walls are extremely non-uniform. With a validated numerical model considering the changes of thermophysical properties and chemical components, the present study analyzed the effects of heat flux intensity, non-uniformity of heat flux distribution and inlet manifold on the mass flow distribution of parallel regenerative cooling channels. Results show that the intensity of heat flux enlarges the non-uniformity of parallel channels, however, the non-uniformity is reduced when the outlet t

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Zhang, Donghui, Haiyang Xu, Yi Chen, et al. "Boiling Heat Transfer Performance of Parallel Porous Microchannels." Energies 13, no. 11 (2020): 2970. http://dx.doi.org/10.3390/en13112970.

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Flow boiling in microporous layers has attracted a great deal of attention in the enhanced heat transfer field due to its high heat dissipation potential. In this study, flow boiling experiments were performed on both porous microchannels and a copper-based microchannel, using water as the coolant. As the heat flux was less than 80 W/cm2, the porous microchannels presented significantly higher boiling heat transfer coefficients than the copper-based microchannel. This was closely associated with the promotion of the nucleation site density of the porous coating. With the further increase in he

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Shakier, Raed, Hussam Muhammed, Hussain Khathem, and Haider Abdul-Khathem. "Two-Phase Flow In Mini-Scale Complex Geometry." Al-Kitab Journal for Pure Sciences 1, no. 1 (2018): 20–26. http://dx.doi.org/10.32441/kjps.v1i1.88.

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Heat-transfer coefficients are reported for one surface, a plain surface, with 50 mm square base area. Parallel channel test piece has one mm by one mm, 25 channelsThe data were produced while boiling R113 at atmospheric pressure. For this surface, the mass flux range was 200 – 600 kg/m2s and the heat flux range was 5 - 80 kW/m2. The results obtained have been compared with standard correlations for tube bundles. The measured heat-transfer coefficients for the parallel micro-channel surface are slightly bigger for any plate channel surface. It is dependent on heat flux and reasonably independe

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Kuznetsov, Vladimir, Alisher Shamirzaev, and Alexander Mordovskoy. "High heat flux flow boiling of refrigerant R236fa in parallel microchannels." EPJ Web of Conferences 196 (2019): 00062. http://dx.doi.org/10.1051/epjconf/201919600062.

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This paper presents the results of an experimental study of the heat transfer during flow boiling of refrigerant R236fa in a horizontal microchannel heat sink. The experiments were performed using closed loop that re-circulates coolant. Microchannel heat exchanger that contains two microchannels with 2x0.4 mm cross-section was used as the test section. The dependence of average heat flux on wall superheat and critical heat flux were measured in the range of mass fluxes from 600 to 1600 kg/m2s and in the range of heat fluxes from 5 to 120 W/cm2. For heat flux greater than 60 W/cm2, nucleate boi

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Salman, Yasin K., and Hazim S. Hamad. "LAMINAR NATURAL CONVECTION HEAT TRANSFER BETWEEN DUCTED PARALLEL PLATES." Journal of Engineering 14, no. 03 (2008): 2786–803. http://dx.doi.org/10.31026/j.eng.2008.03.18.

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Laminar natural convection heat transfer to air flow in a ducted two parallel plates subjected to same constant heat flux has been studied experimentally. In this study a test rig has been designed and constructed to allow studying the effect of plate spacing and plates angle of inclination on the heat transfer process. The study covers three plate spacing 15 mm, 35mm and 60 mm that makes plate aspect ratio (AR) 24, 10.285 and 6, The heat flux implemented in all test runs varies between 55 W/m2– 340 W/m2 that makes the modified Rayleigh number (Ra) varies from 105-108. Experimental results pre

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Barghouthi, I. A., H. Nilsson, and S. H. Ghithan. "O<sup>+</sup> and H<sup>+</sup> ion heat fluxes at high altitudes and high latitudes." Annales Geophysicae 32, no. 8 (2014): 1043–57. http://dx.doi.org/10.5194/angeo-32-1043-2014.

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Abstract. Higher order moments, e.g., perpendicular and parallel heat fluxes, are related to non-Maxwellian plasma distributions. Such distributions are common when the plasma environment is not collision dominated. In the polar wind and auroral regions, the ion outflow is collisionless at altitudes above about 1.2 RE geocentric. In these regions wave–particle interaction is the primary acceleration mechanism of outflowing ionospheric origin ions. We present the altitude profiles of actual and "thermalized" heat fluxes for major ion species in the collisionless region by using the Barghouthi m

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Guo, Zeng-Yuan, and Xiao-Bo Wu. "Thermal Drag and Critical Heat Flux for Natural Convection of Air in Vertical Parallel Plates." Journal of Heat Transfer 115, no. 1 (1993): 124–29. http://dx.doi.org/10.1115/1.2910637.

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Variable property effects on vertical channel natural convection in air are studied systematically. Numerical solutions of the governing equations show that both the mass flow rate and heat transfer in the channel are not only lower than the constant property results, but also show a nonmonotonic variation with increasing wall temperature or wall heat flux. This phenomenon, which seemingly conflicts with the conventional knowledge, has also been identified by experiments. For a vertical channel with a uniform heat flux boundary condition, the wall may experience a sharp rise in temperature up

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Zhang, Xiao Jing, Bing Qi Liu, Xiao Jie Xu, Xi Wu, and Rui Ming Yuan. "A Study of the Enhancement in Near-Field Radiative Heat Transfer by Surface Polaritons." Applied Mechanics and Materials 448-453 (October 2013): 3211–16. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.3211.

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The influence of surface polaritons on spectral energy flux at different temperatures or distances to the surface of a plate was analyzed. The relations of the net heat flux between two parallel plates with the material type were also discussed. The results demonstrate that the effect of surface polaritons is dominated in the spectral energy flux at 300 K when the distance is decreased to 100 nm. In addition, the intensity of surface polaritons increases with the temperature. The net heat flux between two parallel plates has a nearly linear relation with the temperature and is closely related

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Bergles, A. E., and S. G. Kandlikar. "On the Nature of Critical Heat Flux in Microchannels." Journal of Heat Transfer 127, no. 1 (2005): 101–7. http://dx.doi.org/10.1115/1.1839587.

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The critical heat flux (CHF) limit is an important consideration in the design of most flow boiling systems. Before the use of microchannels under saturated flow boiling conditions becomes widely accepted in cooling of high-heat-flux devices, such as electronics and laser diodes, it is essential to have a clear understanding of the CHF mechanism. This must be coupled with an extensive database covering a wide range of fluids, channel configurations, and operating conditions. The experiments required to obtain this information pose unique challenges. Among other issues, flow distribution among

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Li, Fuqin, William P. Kustas, John H. Prueger, Christopher M. U. Neale, and Thomas J. Jackson. "Utility of Remote Sensing–Based Two-Source Energy Balance Model under Low- and High-Vegetation Cover Conditions." Journal of Hydrometeorology 6, no. 6 (2005): 878–91. http://dx.doi.org/10.1175/jhm464.1.

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Abstract Two resistance network formulations that are used in a two-source model for parameterizing soil and canopy energy exchanges are evaluated for a wide range of soybean and corn crop cover and soil moisture conditions during the Soil Moisture–Atmosphere Coupling Experiment (SMACEX). The parallel resistance formulation does not consider interaction between the soil and canopy fluxes, whereas the series resistance algorithms provide interaction via the computation of a within-air canopy temperature. Land surface temperatures were derived from high-resolution Landsat Thematic Mapper (TM)/En

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Dissertations / Theses on the topic "Parallel heat flux"

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Kang, Yong Tae. "Experimental investigation of critical heat flux in transient boiling systems with vertical thin rectangular parallel plate channels /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244826053.

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Hu, Chih-Chieh. "Mechanistic modeling of evaporating thin liquid film instability on a bwr fuel rod with parallel and cross vapor flow." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28148.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Abdel-Khalik, Said; Committee Member: Ammar, Mostafa H.; Committee Member: Ghiaasiaan, S. Mostafa; Committee Member: Hertel, Nolan E.; Committee Member: Liu, Yingjie.

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Alanazi, Mohammed Awwad. "Non-invasive Method to Measure Energy Flow Rate in a Pipe." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/103179.

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Current methods for measuring energy flow rate in a pipe use a variety of invasive sensors, including temperature sensors, turbine flow meters, and vortex shedding devices. These systems are costly to buy and install. A new approach that uses non-invasive sensors that are easy to install and less expensive has been developed. A thermal interrogation method using heat flux and temperature measurements is used. A transient thermal model, lumped capacitance method LCM, before and during activation of an external heater provides estimates of the fluid heat transfer coefficient h and fluid temperat

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Grosjean, Alex. "Impact of geometry and shaping of the plasma facing components on hot spot generation in tokamak devices." Electronic Thesis or Diss., Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0556.

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Cette thèse s’inscrit en support du projet ITER, sur l’étude du comportement thermique de prototypes de CFP dans des tokamaks supraconducteurs : EAST et WEST. Ces prototypes correspondent à un enchaînement de monoblocs de tungstène le long d’un tube de refroidissement, séparés par des interstices (0.5 mm), qui permet d’extraire la chaleur de ces composants. L’introduction de ces interstices entre monoblocs (toroïdaux) ou entre barres de monoblocs (poloïdaux), implique que le bord poloïdal peut être exposé aux lignes de champ avec une incidence quasi-normale. Un échauffement local très importan

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Huang, Yu-Chi, and 黃佑騏. "The Forced Convection Numerical Simulation using Finite Volume Method in the Entrance Region of a Parallel Plate Channel with Constant Heat Flux." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/40240006240377022501.

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碩士<br>國立臺灣海洋大學<br>機械與機電工程學系<br>103<br>In the numerical analysis of engineering world, there are three commonly used numerical schemes, namely, Finite-volume, finite-difference, and finite-element methods. The finite volume method (Finite Volume Method, FVM) is the most common one in the thermal-fluid field. The flow area of interest is divided into many non-overlapping control volumes in the FVM and each grid node is surrounded by a control volume. An integral process is performed for each control volume so that conservation laws (such as mass, momentum, and energy) could be satisfied within e

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Books on the topic "Parallel heat flux"

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Aktan, Gülçin. Fully developed laminar natural convection in a vertical parallel-plate duct with constant wall heat flux. 1996.

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Book chapters on the topic "Parallel heat flux"

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Sharath Kumar Reddy, J., and D. Bhargavi. "Thermally Developing Region of a Parallel Plate Channel Partially Filled with a Porous Material with the Effect of Axial Conduction and Viscous Dissipation: Uniform Wall Heat Flux." In Advances in Applied Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1201-8_4.

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Peigin, S., J. Periaux, and S. Timchenko. "Asynchrone parallel genetic algorithm for heat flux optimization problem." In Parallel Computational Fluid Dynamics 1998. Elsevier, 1999. http://dx.doi.org/10.1016/b978-044482850-7/50107-8.

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Singh, Sudhansu Sekhar, Abinash Sahoo, Ramesh Chandra Nayak, Krutibash Khuntia, and Prabina Pratyus Sendha. "SHIFTING OF HEAT ENERGY VIA TRANSVERSE PARALLEL SHEETS CONFIRMED WITH NATURAL CONVECTION." In Futuristic Trends in Mechanical Engineering Volume 3 Book 6. Iterative International Publisher, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bgme6p3ch1.

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Due to the progression in each and every aspect concern with energy production, utilization and harnessing of the same has been drastically optimized. The energy draws out from heat sources is one of a type among all convectional and non-convectional sources of energies. The pattern of heat energy shift through natural convection has a number of applications found in the market .The uses of this kind of energy can be listed as electrical and electronics equipments, nuclear reactors, domestic convection, dry cooling towers, thermo siphons, installed in ground and many more. On the account of fu

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Nakagiri Shin-ichi. "Deformation Formulas and Inverse Problems for Advection-diffusion Equations." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2012. https://doi.org/10.3233/978-1-61499-092-5-61.

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In this paper, we study inverse problems for advection-diffusion equations by means of a new deformation formula. As an application of results, we solve the inverse flux problem for parallel-flow two-fluid heat exchanger process.

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Davydov Alexander A. and Shilnikov Evgeny V. "Numerical Simulation of the Low Compressible Viscous Gas Flows on GPU-based Hybrid Supercomputers." In Advances in Parallel Computing. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-381-0-315.

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The paper presents some results of modeling low compressible gas flows on GPU-based hybrid computer systems. Finite difference scheme is based on the Quasi Gas Dynamic (QGD) equations system. The successful experience in solving a wide variety of gas dynamic problems by means of QGD based schemes showed that they describe viscous heat conducting flows as good as schemes for Navier-Stokes equations, where the latter are applicable. To improve the stability condition of the explicit scheme described here the flux relaxation approach was used, which permits to achieve practically Courant like sta

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Kozlov, Vladimir, Vladimir Maz’ya, and Alexander Movchan. "A Boundary Value Problem for the Laplacian in a Multi-Structure." In Asymptotic Analysis of Fields in Multi-Structures. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198514954.003.0002.

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Abstract In the present chapter we consider a multi-structure ‖;ε defined as a union of a three-dimensional domain and a number of thin cylinders of normalised thickness ε parallel to each other (see Fig. 2.1). We deal with the asymptotic analysis of a solution u of a mixed boundary value problem for the Laplacian operator in ∂‖;ε.The Dirichlet data are prescribed on the bases of thin cylinders; on the remaining part of the surface ∂Ωε we have the Neumann boundary condition. We note that the solution of this problem describes the temperature field in the multistructure for the case when the he

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Pallikarakis, Christos N., Dionysios I. Kolaitis, and Maria A. Founti. "Characteristics of surface litter fires: A systematic experimental study." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_242.

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This work presents the results of laboratory experiments, focused on the characterization of surface wildland fires propagating in a litter fuel bed. A series of fire tests are conducted using an inclinable combustion table, measuring 2 m x 2 m, aiming to identify the effects of several important operational parameters on the characteristics of the developing fire. The parameters studied are the slope angle, the fuel load, the fuel moisture content and the type of ignition. A broad sensor network is installed in the combustion table, including 86 thermocouples, 4 bi-directional velocity probes

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Carr, Jeremy. "Paranoia and Perception." In Repulsion. Liverpool University Press, 2021. http://dx.doi.org/10.3828/liverpool/9781800859326.003.0004.

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Reflecting and affecting her fears, the Kensington flat Carol shares with Helen is a palpable expression of dread, realized primarily in Polanski’s illustrative production design. The apartment appears in a perpetual state of flux, with malleable walls, spatial extensions, and a cumulative disarray that parallels Carol’s debilitating breakdown. As Carol moves carefully and woefully from room to room, traversing the hallways with petrified trepidation, external noises signal a peripheral life outside, while inside, ticking clocks, buzzing flies, and harassing phone calls form aural reminders of

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Conference papers on the topic "Parallel heat flux"

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Allred Alcorn, Isabella, and Mark L. Kimber. "HEAT TRANSFER CORRELATIONS FOR LAMINAR, DEVELOPING FLOWWITH CONSTANT HEAT FLUX AND CONSTANT HEAT GENERATION IN CIRCULAR DUCTS AND PARALLEL PLATES." In 10th Thermal and Fluids Engineering Conference (TFEC). Begellhouse, 2025. https://doi.org/10.1615/tfec2025.aec.055915.

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Kuznetsov, Vladimir V., and Alisher S. Shamirzaev. "HIGH HEAT FLUX FLOW BOILING OF WATER AND DIELECTRIC COOLANT IN PARALLEL MICROCHANNELS." In International Heat Transfer Conference 16. Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.bae.022906.

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Baxi, C. B., O. Gutierrez, R. Schleicher, and C. M. Kendall. "Heat and Mass Transfer in Parallel Flow Mist Cooling." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47552.

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The lasing gain media (LGM) of the solid-state heat capacity laser (SSHCL) need to be cooled in a short time in between laser operations to increase the duty cycle. Parallel flow mist cooling is an attractive option to accomplish this. However, no general correlations exist to predict parallel flow mist cooling heat transfer for various fluids. In order to obtain such a correlation this study was undertaken. Drop size distribution from different nozzles was characterized by laser Doppler anemometer. A parallel flow mist cooling experimental set-up was designed and fabricated. Data from over 30

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Chen, Tailian, and Suresh V. Garimella. "A Study of Critical Heat Flux During Flow Boiling in Microchannel Heat Sinks." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44083.

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The cooling capacity of two-phase transport in microchannels is limited by the occurrence of critical heat flux (CHF). Due to the nature of the phenomenon, it is challenging to obtain reliable CHF data without causing damage to the device under test. In this work, the critical heat fluxes for flow boiling of FC-77 in a silicon thermal test die containing 60 parallel microchannels were measured at five total flow rates through the microchannels in the range of 20–80 ml/min. CHF is caused by dryout at the wall near the exit of the microchannels, which in turn is attributed to the flow reversal u

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Nelson, Douglas J., and Byard D. Wood. "COMBINED HEAT AND MASS TRANSFER NATURAL CONVECTION BETWEEN VERTICAL PARALLEL PLATES WITH UNIFORM FLUX BOUNDARY CONDITIONS." In International Heat Transfer Conference 8. Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.3190.

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Bunderson, Nathan E., and Barton L. Smith. "Quantification of Mixing Performance in Parallel Jets." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56852.

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Experiments of unvented parallel planar jets having variable slot widths and velocities are presented. A flow visualization study shows that, for sufficiently large spacing, the jets “flap” and that this motion is maximized for a matched exit momentum flux condition. The extent of the jet mixing with the ambient fluid is investigated using two-component hot wire anemometry. It is demonstrated that the flapping increases mixing of the jets with the ambient. In addition, it is shown that the mixing increases with distance between the jets and with jet-width ratio.

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Chung, Shan-Yu, and Chin Pan. "The Enhancement of Boiling Heat Transfer in a Minichannel Heat Sink With Saw-Tooth Structure on Channel Surface." In ASME 2016 5th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/mnhmt2016-6626.

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The dimension of electronic devices becomes smaller and smaller and, thus, it is of crucial importance to enhance the heat dissipation from such tiny devices. The present study investigates the boiling heat transfer in a minichannel heat sink with saw-tooth structure on channel surface. The heat sink is comprised of four minichannels with hydraulic diameter of 0.8 mm and made of copper. The dimensions of the base area of the heat sink are 90 mm (length) × 5 mm (width). The saw-tooth topology on the bottom surface of minichannel was manufactured by wire-cut electrical discharge machining (EDM).

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Bergles, A. E., and S. G. Kandlikar. "On the Nature of Critical Heat Flux in Microchannels." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42383.

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The critical heat flux (CHF) limit is an important consideration in the design of any flow boiling unit. Before the use of microchannels under flow boiling conditions becomes widely accepted in critical applications, such as electronics cooling and laser lenses, it is essential to develop CHF data for microchannels. The experiments required to obtain this information pose unique challenges as the channel dimensions become smaller. The issues of parallel channel instability, experimental control, experimental uncertainty, and conjugate effects need to be carefully addressed. These issues are ad

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Schygulla, Ulrich, Ju¨rgen J. Brandner, Eugen Anurjew, Edgar Hansjosten, and Klaus Schubert. "Micro Heat Changers and Surface-Micro-Coolers for High Heat Flux." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62188.

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This publication describes the development of a new microstructure to transfer high heat fluxes. With a simple mathematical model based on heat conduction theory for the heat transfer in a micro channel at laminar flow conditions it was deduced that for the transmission of high heat fluxes only the initial part at the beginning of the micro channels is of importance, i.e. the micro channels should be short. Based on this principle a micro structure was designed with a large number of short micro channels taken in parallel. With this newly developed microstructure a prototype of a micro heat ex

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Kabelac, Stephan, and Sebastian W. Freund. "Local Two-Phase Flow Heat Transfer in Plate Heat Exchangers." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32051.

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Experimental results on quasi-local heat transfer coefficients for evaporation and condensation in PHEs related to vapor quality, mass flow rate and heat flux are presented in this paper. The data is obtained from a refrigeration cycle involving a PHE evaporator and a PHE condenser with a secondary fluid loop. The considered refrigerants are ammonia and R-134a. Evaporator and condenser are equipped with multiple thermocouples along the plates, which allow for the deduction of local heat flux and heat transfer coefficients on seven subsections of the plates. The data resolves for the first time

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Reports on the topic "Parallel heat flux"

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Kedzierski, Mark A., and Donggyu Kang. Horizontal convective boiling of R1234yf, R134a, and R450A within a micro-fin tube :. National Institute of Standards and Technology (U.S.), 2017. http://dx.doi.org/10.6028/nist.tn.1966.

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This report presents local convective boiling heat transfer and Fanning friction factor measurements in a micro-fin tube for R134a and two possible low global warming potential (GWP) refrigerant replacements for R134a: R1234yf and R450A. Test section heating was achieved with water in either counterflow or in parallel flow with the test refrigerant to provide for a range of heat fluxes for each thermodynamic quality. An existing correlation from the literature for single and multi-component mixtures was shown to not satisfactorily predict the convective boiling measurements for flow qualities

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