## 3D simulation of incompressible Poiseuille flow through 180° curved duct of square cross-section under effect of thermal buoyancy

 dc.contributor.author Mokeddem, Mourad en_ZA dc.contributor.author Laidoudi, Houssem en_ZA dc.contributor.author Makinde, Oluwole Daniel en_ZA dc.contributor.author Bouzit, Mohamed en_ZA dc.date.accessioned 2021-10-20T08:51:38Z dc.date.available 2021-10-20T08:51:38Z dc.date.issued 2019-08-04 dc.description CITATION: Mokeddem, M., et al. 2019. 3D Simulation of Incompressible Poiseuille Flow through 180° Curved Duct of Square Cross-section under Effect of Thermal Buoyancy. Periodica Polytechnica Mechanical Engineering, 63(4):257–269. doi:10.3311/PPme.12773 dc.description The original publication is available at https://pp.bme.hu/me/index en_ZA dc.description.abstract In this paper, three-dimensional numerical simulations are carried out to investigate and analyze the gradual effects of thermal buoyancy strength on laminar flow of an incompressible viscous fluid and heat transfer rate inside a 180° curved channel of square cross-section. The governing equations of continuity, momentum and energy balance are obtained and solved numerically using finite volume method. The effect of Dean number, De, and Richardson number, Ri, on dimensionless velocity profiles and Nusselt number are examined for the conditions: De = 125 to 150, Ri = 0 to 2 at Pr = 1. The mean results are illustrated in terms of streamline and isotherm contours to interpret the flow behaviors and its effect on heat transfer rate. Dimensionless velocity profiles and the local Nusselt number at the angle 0° and 90° are presented and discussed. Also, the average Nusselt number on surfaces of curved duct is computed. The obtained results showed that by adding thermal buoyancy to computed domain, some early Dean vortices are observed at the angle 0° and new sort are observed at 90°. Furthermore, increase in Dean number increases the heat transfer rate. In other hand, increase in Richardson number decreases the average Nusselt number of 180° curved duct. en_ZA dc.description.uri https://pp.bme.hu/me/article/view/12773 dc.description.version Publisher’s version dc.format.extent 13 pages dc.identifier.citation Mokeddem, M., et al. 2019. 3D Simulation of Incompressible Poiseuille Flow through 180° Curved Duct of Square Cross-section under Effect of Thermal Buoyancy. Periodica Polytechnica Mechanical Engineering, 63(4):257–269. doi:10.3311/PPme.12773 dc.identifier.issn 1587-379X (online) dc.identifier.issn 0324-6051 (print) dc.identifier.other doi:10.3311/PPme.12773 dc.identifier.uri http://hdl.handle.net/10019.1/123267 dc.language.iso en_ZA en_ZA dc.publisher Budapest University of Technology and Economics dc.rights.holder Authors retain rights dc.subject Mixed convection en_ZA dc.subject Thermal buoyancy en_ZA dc.subject Nusselt number en_ZA dc.subject Heat transmission en_ZA dc.subject Buoyant convection en_ZA dc.subject Buoyancy, Positive en_ZA dc.subject Buoyant ascent (Hydrodynamics) en_ZA dc.subject Multiphase flow -- Mathematical models en_ZA dc.subject Fluid mechanics en_ZA dc.subject Nanotechnology en_ZA dc.subject Newtonian fluids en_ZA dc.subject Thermodynamics en_ZA dc.subject Three-dimensional imaging en_ZA dc.title 3D simulation of incompressible Poiseuille flow through 180° curved duct of square cross-section under effect of thermal buoyancy en_ZA dc.type Article en_ZA
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