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An immersed boundary-lattice Boltzmann method for thermal and thermo-solutal problems of Newtonian and non-Newtonian fluids
Citation
Kefayati, G, An immersed boundary-lattice Boltzmann method for thermal and thermo-solutal problems of Newtonian and non-Newtonian fluids, Physics of Fluids, 32, (7) Article 073103. ISSN 1070-6631 (2020) [Refereed Article]
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Abstract
An immersed boundary-lattice Boltzmann method is introduced that can be employed for different thermal and thermo-solutal problems of Newtonian and non-Newtonian fluids. The general macroscopic and mesoscopic equations are presented and discussed. It is shown and proved that the macroscopic equations are satisfied by the proposed lattice Boltzmann equations. This approach removes the limitation of the conventional lattice Boltzmann method in constitutive equations and boundary conditions. To validate the accuracy of the method, it is compared against several cases of complex geometries with curved boundaries for natural convection in enclosures. To demonstrate the ability of this method for the simulation of thermo-solutal flows of non-Newtonian fluids with curved boundaries, double diffusive natural convection of Carreau fluid between a square cylinder and two circular cylinders is investigated and results are reported. Next, double diffusive mixed convection of a Bingham fluid in a cavity with a curved boundary condition is studied.
Item Details
Item Type: | Refereed Article |
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Keywords: | CFD, LBM, IBM, heat and mass transfer |
Research Division: | Engineering |
Research Group: | Mechanical engineering |
Research Field: | Numerical modelling and mechanical characterisation |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in engineering |
UTAS Author: | Kefayati, G (Dr Gholamreza Kefayati) |
ID Code: | 139865 |
Year Published: | 2020 |
Web of Science® Times Cited: | 12 |
Deposited By: | Engineering |
Deposited On: | 2020-07-09 |
Last Modified: | 2021-02-03 |
Downloads: | 12 View Download Statistics |
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