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Analysis of Single Phase Fluid Flow and Heat Transfer in Slip Flow Regime by Parallel Implementation of Lattice Boltzmann Method on GPUs

Sitki Berat Celik
Mechanical Engineering Department, Middle East Technical University
Middle East Technical University, 2012
@article{celik2012analysis,

   title={ANALYSIS OF SINGLE PHASE FLUID FLOW AND HEAT TRANSFER IN SLIP FLOW REGIME BY PARALLEL IMPLEMENTATION OF LATTICE BOLTZMANN METHOD ON GPUS},

   author={CELIK, S.B.},

   year={2012}

}

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In this thesis work fluid flow and heat transfer in two-dimensional microchannels are studied numerically. A computer code based on Lattice Boltzmann Method (LBM) is developed for this purpose. The code is written using MATLAB and Jacket software and has the important feature of being able to run parallel on Graphics Processing Units (GPUs). The code is used to simulate flow and heat transfer inside micro and macro channels. Obtained velocity profiles and Nusselt numbers are compared with the Navier-Stokes based analytical and numerical results available in the literature and good matches are observed. Slip velocity and temperature jump boundary conditions are used for the micro channel simulations with Knudsen number values covering the slip flow regime. Speed of the parallel version of the developed code running on GPUs is compared with that of the serial one running on CPU and for large enough meshes more than 14 times speedup is observed.
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