scholarly journals Conjugate heat transfer in isolated granular clusters with interstitial fluid using lattice Boltzmann method

2022 ◽  
Vol 187 ◽  
pp. 122539
Author(s):  
Mehran Kiani-Oshtorjani ◽  
Mehrdad Kiani-Oshtorjani ◽  
Aki Mikkola ◽  
Payman Jalali
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Conjugate Heat Transfer ◽  
Interstitial Fluid ◽  
Boltzmann Method

Conjugate heat transfer with the entropic lattice Boltzmann method

2016 ◽  
Vol 94 (1) ◽  
Author(s):  
G. Pareschi ◽  
N. Frapolli ◽  
S. S. Chikatamarla ◽  
I. V. Karlin
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Conjugate Heat Transfer ◽  
Boltzmann Method

Simulation of Flow and Conjugate Heat Transfer in a Macro-Channel via Lattice Boltzmann Method

2007 ◽  
Author(s):  
A. A. Mohamad
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Conjugate Heat Transfer ◽  
Single Phase ◽  
75Th Birthday ◽  
Single Phase Flow ◽  
Internal Flows ◽  
Axial Heat ◽  
Boltzmann Method

Contributions of Prof. Kakac to the field of heat transfer, especially forced, internal flows for single and multiphase are significant and will leave with us for generations. It is an honor to celebrate Prof. Kakac’s 75th birthday with remembering his works. This paper is an attempt to produce some of Prof. Kakac’s old results on single phase flow in a duct with emerging method, Lattice Boltzmann Method. Also, to show the method’s capability in handling conjugate effect naturally. The fluxes (momentum and heat) are naturally conserved at the interface between solid and fluid. Conjugate effect becomes important in macro-flows, where the effect of axial heat conduction through the fluid conducting devices significantly affect the rate of heat transfer.

scholarly journals Simulation of Conjugate Convective-Conductive Heat Transfer in a Microchannel Within the Slip Regime Using GPU Accelerated Lattice Boltzmann Method

2013 ◽  
Author(s):  
Adhika Widyaparaga ◽  
Pranowo
Keyword(s):  
Heat Transfer ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Conjugate Heat Transfer ◽  
Computation Time ◽  
Navier Stokes ◽  
Conductive Heat ◽  
Slip Regime ◽  
Speed Up ◽  
Boltzmann Method

This study aims to investigate the significance of conjugate heat transfer in the microscale within the slip regime. As within the slip regime the continuum assumption is invalid due to presence of rarefaction effects, the Lattice Boltzmann method (LBM) is employed to overcome the limitations of Navier Stokes based solutions in this regime. We have constructed and compared two case models in which a fluid of higher temperature enters a microchannel. The conditions are set to obtain Knudsen numbers which result in the slip regime being dominant. To investigate the effect of conjugate heat transfer, the two models differed in the aspect that one model did not incorporate conjugate heat transfer and while the other did. The numerical calculation was validated by comparing the velocity profile results to exact theoretical approximations and was found to agree well. The results of comparison of models Case I and Case 2 have shown that temperature profile is affected significantly by conjugate heat transfer. The conjugate heat transfer at the microchannel wall (Case 1) was shown to maintain the initial temperature of fluid longer than compared to a purely isothermal wall (Case 2), thus signifying the importance of the consideration of conjugate heat transfer effects in microfluid models. We have implemented GPU based parallel processing to reduce computation time. The result of the incorporation of GPU processing was found to increase processing speed up to 15 times.

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