Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection
In the present paper, we report a numerical study of dynamic and thermal behavior of the incompressible turbulent air flow by forced convection in a two-dimensional horizontal channel. This one contains the complicated form of the deflector which has been studied by varying the inclination angle fro...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/1453893 |
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| author | Jamal Eddine Salhi Kamal Amghar Hicham Bouali Najim Salhi |
| author_facet | Jamal Eddine Salhi Kamal Amghar Hicham Bouali Najim Salhi |
| author_sort | Jamal Eddine Salhi |
| collection | DOAJ |
| description | In the present paper, we report a numerical study of dynamic and thermal behavior of the incompressible turbulent air flow by forced convection in a two-dimensional horizontal channel. This one contains the complicated form of the deflector which has been studied by varying the inclination angle from φ = 40°, φ = 55° to φ = 65°. The baffles are mounted on lower and upper walls of the channel. The walls are maintained at a constant temperature (375 K), the inlet velocity of air is Uint = 7.8 m/s, and the Reynolds number Re = 8.73 × 104. A specifically developed numerical model was based on the finite-volume method to solve the coupled governing equations and the SIMPLE (Semi Implicit Method for Pressure Linked Equation) algorithm for the treatment of velocity-pressure coupling. For Pr = 0.71, the results obtained show that (i) the streamlines and isotherms are strongly affected by the inclinations angles at Re = 8.73 × 104, (ii) the friction coefficient near the baffles increases under the angle exchange effect, and (iii) for a constant Re, the local Nusselt number at the walls of the channel varies with increasing the inclination angle of the deflector. Furthermore, the deflectors are generally used to change the direction of the structure of flow and also to increase the turbulence levels. We can conclude that the contribution of inclined baffles improves the increase of heat and mass transfer in which the Nusselt number at a certain angle increases noticeably. |
| format | Article |
| id | doaj-art-790ad6bac1b74cbc80183666340bedaf |
| institution | Kabale University |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-790ad6bac1b74cbc80183666340bedaf2025-02-03T06:46:54ZengWileyModelling and Simulation in Engineering1687-55911687-56052020-01-01202010.1155/2020/14538931453893Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced ConvectionJamal Eddine Salhi0Kamal Amghar1Hicham Bouali2Najim Salhi3Laboratory of Mechanics and Energy, Faculty of Sciences, First Mohammed University, Oujda 60000, MoroccoLaboratory of Mechanics and Energy, Faculty of Sciences, First Mohammed University, Oujda 60000, MoroccoLaboratory of Renewable Energy, Embedded System and Information Processing, National School of Applied Science, Agadir, MoroccoLaboratory of Mechanics and Energy, Faculty of Sciences, First Mohammed University, Oujda 60000, MoroccoIn the present paper, we report a numerical study of dynamic and thermal behavior of the incompressible turbulent air flow by forced convection in a two-dimensional horizontal channel. This one contains the complicated form of the deflector which has been studied by varying the inclination angle from φ = 40°, φ = 55° to φ = 65°. The baffles are mounted on lower and upper walls of the channel. The walls are maintained at a constant temperature (375 K), the inlet velocity of air is Uint = 7.8 m/s, and the Reynolds number Re = 8.73 × 104. A specifically developed numerical model was based on the finite-volume method to solve the coupled governing equations and the SIMPLE (Semi Implicit Method for Pressure Linked Equation) algorithm for the treatment of velocity-pressure coupling. For Pr = 0.71, the results obtained show that (i) the streamlines and isotherms are strongly affected by the inclinations angles at Re = 8.73 × 104, (ii) the friction coefficient near the baffles increases under the angle exchange effect, and (iii) for a constant Re, the local Nusselt number at the walls of the channel varies with increasing the inclination angle of the deflector. Furthermore, the deflectors are generally used to change the direction of the structure of flow and also to increase the turbulence levels. We can conclude that the contribution of inclined baffles improves the increase of heat and mass transfer in which the Nusselt number at a certain angle increases noticeably.http://dx.doi.org/10.1155/2020/1453893 |
| spellingShingle | Jamal Eddine Salhi Kamal Amghar Hicham Bouali Najim Salhi Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection Modelling and Simulation in Engineering |
| title | Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection |
| title_full | Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection |
| title_fullStr | Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection |
| title_full_unstemmed | Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection |
| title_short | Combined Heat and Mass Transfer of Fluid Flowing through Horizontal Channel by Turbulent Forced Convection |
| title_sort | combined heat and mass transfer of fluid flowing through horizontal channel by turbulent forced convection |
| url | http://dx.doi.org/10.1155/2020/1453893 |
| work_keys_str_mv | AT jamaleddinesalhi combinedheatandmasstransferoffluidflowingthroughhorizontalchannelbyturbulentforcedconvection AT kamalamghar combinedheatandmasstransferoffluidflowingthroughhorizontalchannelbyturbulentforcedconvection AT hichambouali combinedheatandmasstransferoffluidflowingthroughhorizontalchannelbyturbulentforcedconvection AT najimsalhi combinedheatandmasstransferoffluidflowingthroughhorizontalchannelbyturbulentforcedconvection |