PRESSURE SPECTRA IN HOMOGENEOUS LOW-REYNOLDS-NUMBER TURBULENT SHEAR-FLOW SUBJECTED TO WEAK ROTATION

In this paper, pressure spectra have been derived from the authors' mo del (Eur. J. Mech., B/Fluids 12 (1) (1993) 31-42) developed by means o f rapid distortion theory (RDT) of homogeneous low Reynolds number tur bulent shear flow subjected to weak rotation. The combined effects of uniform shear dU(1)/dx(2) and weak rotation Ohm(3) on the evolution of pressure spectra have been examined in terms of the rotation number 2 Ohm(3)/(dU(1)/dx(2)). It is found that the system rotation exhibits t he opposite effect on the pressure field as compared with the influenc e of rotation on the velocity fluctuations. (C) 1998 The Japan Society of Fluid Mechanics and Elsevier Science B.V. All rights reserved.