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Structural Engineering and Mechanics Volume 79, Number 1, July10 2021 , pages 051-66 DOI: https://doi.org/10.12989/sem.2021.79.1.051 |
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Multi-objective optimization of mixed convection air cooling in an inclined channel with discrete heat sources |
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Moumtez Bensouici, Mohamed Walid Azizi and Fatima Zohra Bensouici
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| Abstract | ||
| In this paper, a multi-objective optimization of mixed convection air-cooling of two identical discrete heat sources mounted in an inclined channel is conducted to obtain the optimal design parameters, using Response Surface Methodology (RSM) and desirability function approach. Reynolds number (Re), inclination of the channel (r) and the width of the discrete heat source (b) are selected as the input parameters. The computational simulations are done for different Reynolds numbers (25-Re-250), inclination angles of the channel (0o-r-360o) and the width of the heat source (5-b-10 mm). A central composite design (CCD), which comes under the RSM approach, with design parameters was used for analysis of variance (ANOVA). A second-order regression models were developed to correlate the design parameters (Re, r and b) with mean Nusselt number (Nu) and maximum temperature (TMax). The optimum values of design parameters produce the lowest value of maximum temperature (TMax) with a higher mean Nusselt number (Nu) are Reynolds number (Re)=209.94, inclination angle of the channel (r)=330o and heat source width (b)=5.13 mm. | ||
| Key Words | ||
| air cooling; heat sources; mixed convection; multi-objective optimization; numerical simulation; RSM | ||
| Address | ||
| Moumtez Bensouici: Department of Science and Technology, Institute of Sciences and Technology, University Center of Mila, Mila 43000, Algeria; Laboratory of Applied Energetics and Pollution (LAEP), University of Constantine 1, Road of Ain El. Bey, Constantine 25000, Algeria Mohamed Walid Azizi: Department of Science and Technology, Institute of Sciences and Technology, University Center of Mila, Mila 43000, Algeria; Advanced Technologies in Mechanical Production Research Laboratory (LRTAPM), BadjiMokhtar - Annaba University, P.O Box 12, 23000 Annaba, Algeria Fatima Zohra Bensouici: Faculty of Pharmaceutical Process Engineering, University of Constantine 3, UVN05, Ali Mendjeli N V, Khroub, Constantine 25000, Algeria | ||