SPECTRAL STUDY OF WEAKLY COMPRESSIBLE ISOTROPIC TURBULENCE - RESULTS .2.

被引：0

作者：

BATAILLE, F ^{[1
]}

BERTOGLIO, JP ^{[1
]}

MARION, JD ^{[1
]}

机构：

[1] DASSAULT AVIAT,DGT,DEA,F-92214 ST CLOUD,FRANCE

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II | 1992年 / 315卷 / 12期

关键词：

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In order to study the behaviour of an isotropic homogeneous field for the case of a weakly compressible turbulence, an E.D.Q.N.M. model was proposed in two previous Notes [1] and [2]. This Note presents results of the study of the evolution with time of the pressure spectra and of the spectra of the turbulent kinetic energy corresponding to the purely compressible part of the field, starting from an initially incompressible turbulence. For short times, the pressure spectrum is shown to follow a K-5/3 power law, whereas it is found to follow a K-11/3 law at large times. These different spectral shapes can be explained by an analytical study of the model in the limit of a very weak compressibility.

引用

页码：1459 / 1465

页数：7

共 9 条

[1] BATAILLE F, UNPUB C R ACAD SCI P
[2] Batchelor G.K., 1970, THEORY HOMOGENEOUS T
[3] BELLOT GC, 1971, J FLUID MECH 2, V48
[4] GEORGE W, 1984, J FLUID MECH, V148
[5] LESLIE DC, 1970, DEV THEORY TURBULENC
[6] MARION JD, 1988, CR ACAD SCI II, V307, P1601
[7] MARION JD, 1988, CR ACAD SCI II, V307, P1487
[8] DENSITY FLUCTUATION SPECTRA IN MAGNETOHYDRODYNAMIC TURBULENCE
MONTGOMERY, D
BROWN, MR
MATTHAEUS, WH
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1987, 92 (A1): : 282 - 284
[9] ZANK GP, 1991, PHYS FLUIDS A, V3

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