Three-dimensional numerical simulation of external fluid flow and heat transfer of a heat exchanger in a wind tunnel using porous media model

2020 ◽  
Vol 141 (5) ◽  
pp. 1647-1667
Author(s):  
Iman Moradi ◽  
Arash Karimipour ◽  
Masoud Afrand ◽  
Z. Li ◽  
Quang-Vu Bach
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Porous Media ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Wind Tunnel ◽  
Three Dimensional ◽  
Flow And Heat Transfer ◽  
External Fluid ◽  
Porous Media Model

scholarly journals Mathematical Modeling of Fluid Flow and Heat Transfer in Petroleum Industries and Geothermal Applications

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1344
Author(s):  
Mehrdad Massoudi
Keyword(s):  
Mathematical Modeling ◽  
Heat Transfer ◽  
Porous Media ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Ground Heat Exchanger ◽  
Special Issue ◽  
Flow And Heat Transfer ◽  
Convection In Porous Media

This Special Issue of Energies is dedicated to all aspects of fluid flow and heat transfer in geothermal applications, including the ground heat exchanger, conduction, and convection in porous media [...]

scholarly journals Numerical simulation of fluid flow and heat transfer of supercritical CO2 in micro-porous media

2011 ◽  
Vol 4 ◽  
pp. 3786-3793 ◽  
Author(s):  
Hang Seok Choi ◽  
Hoon Che Park ◽  
Cheol Huh ◽  
Seong-Gil Kang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Porous Media ◽  
Fluid Flow ◽  
Supercritical Co2 ◽  
Flow And Heat Transfer

Fluid/Thermal Analysis of High Temperature Heat Exchanger and Chemical Decomposer for Hydrogen Production

2007 ◽  
Author(s):  
Valery Ponyavin ◽  
Yitung Chen ◽  
Anthony E. Hechanova ◽  
Merrill Wilson
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
High Temperature ◽  
Heat Exchanger ◽  
Hydrogen Production ◽  
Three Dimensional ◽  
Flow And Heat Transfer ◽  
Temperature Heat ◽  
Improved Design ◽  
Sulfuric Acid Decomposition

This paper presents fluid flow and heat transfer study of a high temperature heat exchanger and chemical decomposer. The decomposer will be used as a part of the plant for hydrogen production. The decomposer is manufactured using fused ceramic layers that allow creation of channels with dimensions below one millimeter. The main purpose for this study is to increase thermal performance of the decomposer which can help to intensify sulfuric acid decomposition rate. Effects of using various channel geometries of the decomposer on the pressure drop are studied as well. A three-dimensional computational model is developed for the investigation of fluid flow and heat transfer in the decomposer. Several different geometries of the decomposer channels such as straight channels, ribbed ground channels, hexagonal channels, and diamond-shaped channels are examined. Based on results of the calculation, the recommendations for the improved design of the decomposer are obtained.

Numerical Investigation on Heat Removal Capacity of Passive Residual Heat Removal Heat Exchanger

2014 ◽  
Author(s):  
Wenwen Zhang ◽  
Wenxi Tian ◽  
Suizheng Qiu ◽  
Guanghui Su
Keyword(s):  
Heat Transfer ◽  
Porous Media ◽  
Heat Exchanger ◽  
Water Temperature ◽  
Three Dimensional ◽  
Heat Removal ◽  
Thermal Hydraulics ◽  
Coupled Heat Transfer ◽  
Porous Media Model ◽  
Residual Heat

In the present study, thermal-hydraulics characteristics of AP1000 passive residual heat removal heat exchanger (PRHR-HX) at initial operating stage were analyzed based on the porous media models. The data predicated by RELAP5 under the condition of the station blackout was employed as the inlet flow rate and temperature boundary of CFD calculation. The heat transfer from the primary side coolant to the in-containment refueling water storage tank (IRWST) side fluid was calculated in a three-dimensional geometry during iterations, and the distributed resistances were added into the C-type tube bundle regions. Three-dimensional distributions of velocity and temperature in the IRWST were calculated by the CFD code ANSYS FLUENT. The primary temperature, heat transfer coefficients of two sides and the heat transfer were obtained using the coupled heat transfer between the primary side and the IRWST side. The simulation results indicated that the water temperature rises gradually which leads to a thermal stratification phenomenon in the tank and the heat transfer capability decreases with an increase of water temperature. The present results indicated that the method containing coupled heat transfer from the primary side fluid to IRWST side fluid and porous media model is a suitable approach to study the transient thermal-hydraulics of PRHR/IRWST system.

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