Open AccessEffect of grid and time step for predicting hydrodynamic resistance of blunt body
Author(s) -
Lili Wang,
Kangning Sun,
Yufeng Cai,
Jun Jiao,
Jiaxu Zhang,
Mingzhen Wang,
Xiaohong Han,
Yongze Xu
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1300/1/012107
Subject(s) - computational fluid dynamics , grid , mechanics , mesh generation , boundary (topology) , domain (mathematical analysis) , boundary layer , computer science , marine engineering , structural engineering , engineering , mathematics , geometry , physics , mathematical analysis , finite element method
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.