High performance computation of a jet in crossflow by lattice Boltzmann based parallel direct numerical simulation
type: Item
instance of: scholarly article
title: High performance computation of a jet in crossflow by lattice Boltzmann based parallel direct numerical simulation
zbMATH Open document ID: 1394.76100
DOI: 10.1155/2015/956827
author: Jiang Lei
author: Xian Wang
author: Gongnan Xie
published in: Mathematical Problems in Engineering
publication date: 2018-08-27T00:00:00Z
review text: Summary: Direct numerical simulation (DNS) of a round jet in crossflow based on lattice Boltzmann method (LBM) is carried out on multi-GPU cluster. Data parallel SIMT (single instruction multiple thread) characteristic of GPU matches the parallelism of LBM well, which leads to the high efficiency of GPU on the LBM solver. With present GPU settings (6 Nvidia Tesla K20M), the present DNS simulation can be completed in several hours. A grid system of \(1.5 \times 10\) is adopted and largest jet Reynolds number reaches 3000. The jet-to-free-stream velocity ratio is set as 3.3. The jet is orthogonal to the mainstream flow direction. The validated code shows good agreement with experiments. Vortical structures of CRVP, shear-layer vortices and horseshoe vortices, are presented and analyzed based on velocity fields and vorticity distributions. Turbulent statistical quantities of Reynolds stress are also displayed. Coherent structures are revealed in a very fine resolution based on the second invariant of the velocity gradients.
Mathematics Subject Classification ID: 76M28
Mathematics Subject Classification ID: 76F65
Mathematics Subject Classification ID: 65Y10
zbMATH DE Number: 6927686
Wikidata QID: Q59120051
describes a project that uses: CUDA
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.1155/2015/956827
OpenAlex ID: W1980308405
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description: scientific article; zbMATH DE number 6927686