RT Journal Article
ID 2de8119871f0c44f
A1 Menni, Younes
A1 Azzi, Ahmed
A1 Chamkha, Ali J.
T1 COMPUTATIONAL THERMAL ANALYSIS OF TURBULENT FORCED-CONVECTION FLOW IN AN AIR CHANNEL WITH A FLAT RECTANGULAR FIN AND DOWNSTREAM V-SHAPED BAFFLE
JF Heat Transfer Research
JO HTR
YR 2019
FD 2019-10-29
VO 50
IS 18
SP 1781
OP 1818
K1 aerodynamics
K1 shell-and-tube heat exchangers
K1 finite volume methods
K1 flat rectangular fin
K1 heat transfer
K1 forced convection
K1 turbulent flow
K1 downstream V-shaped baffle
AB Turbulent forced-convection fluid dynamic simulations were conducted to investigate the impacts of different baffle shapes on the thermal aerodynamic performance of a horizontal two-dimensional channel of rectangular section with wall-mounted baffles and fins. The top wall was put in a constant temperature condition, as the bottom wall was thermally insulated. Two obstacles, having different shapes, i.e., simple and 45° downstream V-shaped, were inserted into the channel and fixed to the upper and lower walls, in a periodically staggered manner. The fluid flow model was governed by the RANS equations and the energy equation. All these equations were discretized by the FVM, handled the pressure-velocity coupling with the SIMPLE discretization algorithm and solved using a CFD technique. This represents a very important issue in the area of shell-and-tube heat exchangers where the flow must be characterized; there is also a need to identify the velocity distribution, as well as the existence and the extension of possible recirculations.



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