scholarly journals Unsteady Coupled Heat Transfer Simulation of Unsteady numerical simulation of slot flow in anti-heating tile

2021 ◽  
Vol 651 (2) ◽  
pp. 022023
Author(s):  
Qiang Wang ◽  
Wei Li ◽  
Yongtao Yao
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Coupled Heat Transfer ◽  
Heat Transfer Simulation ◽  
Unsteady Numerical Simulation

Coupled Heat Transfer Simulation of a Low-Pressure Turbine Vane

2014 ◽  
Vol 614 ◽  
pp. 128-132 ◽  
Author(s):  
Xin Bian ◽  
Tao Li ◽  
Liang Jiang ◽  
Rui Gang Zhang ◽  
Hong Yan Huang
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Heat Conduction Equation ◽  
Cooling Channel ◽  
Low Pressure Turbine ◽  
Coupled Heat Transfer ◽  
Turbine Vane ◽  
Heat Transfer Simulation ◽  
Transition Models ◽  
Volume Method

A coupled heat transfer (CHT) solver was established. The solver couples the N-S equations with the heat conduction equation using the finite volume method. The developed CHT solver was verified by Mark II 5411 case. The numerical results agree well with experimental data, proving the accuracy of the developed CHT code. The solver was applied to the coupled heat transfer simulations of an air-cooled turbine with a single cooling channel. Adiabatic results and CHT results were compared. Different turbulence and transition models were employed. The result shows that the developed code is of great use in engineering simulations, and in order to predict thermal loads on turbine vane accurately, transition needs to be considered.

Numerical Analysis of the Heat Transfer in Passive Solar Composite Wall Collectors System With Porous Absorber

2007 ◽  
Author(s):  
Wei Chen
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Particle Size ◽  
Temperature Field ◽  
Room Temperature ◽  
Heating System ◽  
Thermal Insulator ◽  
Composite Wall ◽  
Unsteady Numerical Simulation ◽  
Solar Wall

In this paper, heat transfer and flow in the composite solar wall with porous absorber has been studied. The unsteady numerical simulation is employed to analyze the performance of the flow and temperature field in the composite solar wall. The excess heat is stored within the porous absorber during solar radiation and there is stratification in the porous layer. So, the porous absorber works as thermal insulator in a degree when no solar shining is available. The heating characteristic of two types of the composite solar wall with porous absorber has been conducted. The influence of particle size, porosity and porous absorber arrange in the solar composite wall on the heating room temperature is significant. The results show that all these factors should be taken into account for a better design of a heating system.

Coupled Heat Transfer Simulation of the Spiral Water Wall in a Double Reheat Ultra-supercritical Boiler

2018 ◽  
Vol 27 (6) ◽  
pp. 592-601 ◽  
Author(s):  
Jiancong Dong ◽  
Tuo Zhou ◽  
Xiaojiang Wu ◽  
Jian Zhang ◽  
Haojie Fan ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Water Wall ◽  
Coupled Heat Transfer ◽  
Heat Transfer Simulation

scholarly journals Numerical simulation of coupeld heat transfer through a concrete hollow brick

2019 ◽  
Vol 286 ◽  
pp. 08004
Author(s):  
B. Jamal ◽  
M. Boukendil ◽  
A. Abdelbaki ◽  
Z. Zrikem
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Fluid Flow ◽  
Natural Convection ◽  
Rayleigh Number ◽  
Simple Algorithm ◽  
Governing Equations ◽  
Coupled Heat Transfer ◽  
Hollow Brick ◽  
Finite Volume Approach

The present study aims to investigate coupled heat transfer by natural convection and conduction through a concrete hollow brick. The governing equations for conservation of mass, momentum and energy are discretized by the finite volume approach and solved by the SIMPLE algorithm. The numerical simulations were conducted to investigate the effect of Rayleigh number (103≤ Ra ≤ 107) on the heat transfer and fluid flow within the structure.

scholarly journals Performance analysis of new structure heat exchanger based on field synergy and numerical simulation

2021 ◽  
Vol 260 ◽  
pp. 01019
Author(s):  
Xinpu Song ◽  
Feng Zhang ◽  
Jin Yu ◽  
Dongsheng Xi ◽  
Mengdi Chen
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Exchanger ◽  
High Efficiency ◽  
Cross Flow ◽  
Transfer Model ◽  
Field Synergy ◽  
Coupled Heat Transfer ◽  
Heat Transfer Efficiency ◽  
Important Means

High efficiency heat exchanger is always a hot topic, and field synergy theory is introduced as an important means to optimize the heat transfer efficiency. Based on the field synergy theory, a new type of heat exchanger is proposed in this paper, in which, the cold and hot fluid presents reverse cross flow law. Through the verification of the test and numerical simulation results, a reasonable numerical simulation model and method are obtained. Then, the flow and heat transfer conditions of the new structure heat exchanger are simulated by the verified numerical simulation technology. The conclusion is as follows: K-ε turbulence model and coupled heat transfer model can be effectively used in the numerical simulation of heat exchanger. And the reverse cross convection heat exchanger can effectively improve the uniformity of water temperature distribution in the heat exchanger.

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