A NOVEL METHOD FOR IDENTIFYING VORTICAL STRUCTURES
A NOVEL METHOD FOR IDENTIFYING VORTICAL STRUCTURES
复制标题
识别旋涡结构的新方法
DOI:
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发表时间:
2002
期刊:
影响因子:
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通讯作者:
E. Rogers
中科院分区:
文献类型:
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作者:
R. Pemberton;S. Turnock;T. Dodd;E. Rogers
A method for identifying vortices in a 2-D velocity field is developed. A function based on the local angles of velocity with respect to a datum is calculated at each point in the 2-D field. This function is a local minimum at vortex centres. An advanced statistical technique for identifying multiple minima is used to find the minima of this function. The method is used for vortices, calculated using a RANS CFD code (CFX 4.3), forming around a very large crude carrier (VLCC) and the results are seen to be close to the centres of the vortices.