Lattice Boltzmann Simulation of MHD Rayleigh–Bénard Convection in Porous Media

2020 ◽  
Vol 45 (11) ◽  
pp. 9527-9547
Author(s):  
Taasnim Ahmed Himika ◽  
Sheikh Hassan ◽  
Md. Farhad Hasan ◽  
Md. Mamun Molla
2018 ◽  
Vol 22 (Suppl. 2) ◽  
pp. 535-545
Author(s):  
Weihua Cai ◽  
Zhifeng Zheng ◽  
Changye Huang ◽  
Yue Wang ◽  
Xin Zheng ◽  
...  

In order to clarify the controversies for the role of nanoparticles on heat transfer in natural convection, lattice Boltzmann method is used to investigate Rayleigh-Benard convection heat transfer in differentially-heated enclosures filled with Al2O3-water nanofluids. The results for streamline and isotherm contours, vertical velocity, and temperature profiles as well as the local and average Nusselt number are discussed for a wide range of Rayleigh numbers and nanoparticle volume fractions (0 ? ? ? 5%). The results show that with the increase of Rayleigh number and nanoparticles loading, Nuave increases. It is suggested that the addition of nanoparticles can enhance the heat transfer in Rayleigh-Benard convection.


2017 ◽  
Vol 12 (2) ◽  
pp. JTST0020-JTST0020 ◽  
Author(s):  
Raoudha CHAABANE ◽  
Faouzi ASKRI ◽  
Abdelmajid JEMNI ◽  
Sassi BEN NASRALLAH

1993 ◽  
Vol 04 (05) ◽  
pp. 993-1006 ◽  
Author(s):  
A. BARTOLONI ◽  
C. BATTISTA ◽  
S. CABASINO ◽  
P. S. PAOLUCCI ◽  
J. PECH ◽  
...  

In this paper we describe an implementation of the Lattice Boltzmann Equation method for fluid-dynamics simulations on the APE100 parallel computer. We have performed a simulation of a two-dimensional Rayleigh-Bénard convection cell. We have tested the theory proposed by Shraiman and Siggia for the scaling of the Nusselt number vs. Rayleigh number.


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