Pressure spectra in homogeneous low Reynolds number turbulent shear flow subjected to weak rotation

Abstract

In this paper, pressure spectra have been derived from the authors’ model (Eur. J. Mech., B/Fluids 12 (1) (1993) 31–42) developed by means of rapid distortion theory (RDT) of homogeneous low Reynolds number turbulent shear flow subjected to weak rotation. The combined effects of uniform shear d U 1/d x 2 and weak rotation Ω 3 on the evolution of pressure spectra have been examined in terms of the rotation number 2Ω 3/( dU 1/ dx 2) . It is found that the system rotation exhibits the opposite effect on the pressure field as compared with the influence of rotation on the velocity fluctuations.