作者: D. I. Pullin,
期刊: Physics of Fluids (AIP Available online 1995) 卷期: Volume 7, issue 4
页码: 849-856
ISSN:1070-6631
年代: 1995
DOI:10.1063/1.868608
出版商: AIP
数据来源: AIP
摘要:
Pressure spectra at large wave numbers are calculated for Lundgren–Townsend vortex models of the fine scales of homogeneous turbulence. Specific results are given for the Burgers vortex and also for the Lundgren‐strained spiral vortex. For the latter case, it is found that the contribution to the shell‐summed spectrum produced by the interaction between the axisymmetric and nonaxisymmetric components of the velocity field is proportional tok−7/3(k=‖k‖ is the modulus of the wave number) in agreement with Kolmogorov‐type dimensional arguments. Numerical estimates of the dimensionless prefactors for this component are obtained in Kolmogorov scaling variables and comparisons are made with results from the Batchelor–Kolmogorov theory, and with experimental measurement. ©1995 American Institute of Physics.
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