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CUDA Implementation of a Lattice Boltzmann Method and Code Optimization

A. Jain
Tata Consultancy Services

@article{jaincuda,

   title={CUDA Implementation of a Lattice Boltzmann Method and Code Optimization},

   author={Jain, Anubhav}

}

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We study fluid flow in a 2D lid driven cavity for large Reynolds numbers using multirelaxation time – Lattice Boltzmann Method(LBM). LBM is an alternative to conventional CFD methods that solve Navier-Stokes equations to simulate incompressible fluid dynamics. In LBM, one solves the linearized Boltzmann equation on a discrete lattice to study spatio-temporal evolution of flow field. The data parallel implementation of the Lattice Boltzmann Method makes the GPGPU as a platform of choice for such computation. Several CUDA optimizations are implemented to achieve desired performance, these are discussed below.
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