Effect of grid and time step for predicting hydrodynamic resistance of blunt body

Taking the amphibious vehicle as an example, the hydrodynamic resistance was obtained by using computational fluid dynamics (CFD). This paper investigated the influent factors which contain mesh generation and time step which influences hydrodynamic calculation, and compared the calculation results...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1300; no. 1; pp. 12107 - 12112
Main Authors Wang, Lili, Sun, Kangning, Cai, Yufeng, Jiao, Jun, Zhang, Jiaxu, Wang, Mingzhen, Han, Xiaohong, Xu, Yongze
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2019
Subjects
Amphibious vehicles
Blunt bodies
Boundary layers
Computational fluid dynamics
Computer graphics
Mathematical analysis
Mesh generation
Physics
Thickness
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Summary:Taking the amphibious vehicle as an example, the hydrodynamic resistance was obtained by using computational fluid dynamics (CFD). This paper investigated the influent factors which contain mesh generation and time step which influences hydrodynamic calculation, and compared the calculation results with the relevant experimental results. This paper analyzed three factors which affecting amphibious vehicle's resistance calculation, including the first grid thickness of boundary layer and ratio for extending surface mesh to the computational domain. By means of analyzing different factors, a high calculation precision strategy which could serve as reference for amphibious vehicle's hydrodynamic resistance was obtained.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1300/1/012107