a Physics and Applied Mathematics Unit, Indian Statistical Institute, Calcutta 700035, India
b Division of Applied Mechanics, Norwegian University of Science and Technology, K. Hejes vei 2,N-7034 Trondheim, Norway
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 dU1/dx2 and weak rotation Ω3 on the evolution of pressure spectra have been examined in terms of the rotation number 2Ω3/(dU1/dx2). 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.