NUMERICAL ANALYSIS OF THE JET-VORTEX PATTERN OF FLOW IN A RECTANGULAR TRENCHS. A. Isaev,a P. I. Kudinov,b N. A. Kudryavtsev,a and I. A. Pyshnyia UDC 532.517.2 Numerical simulation of the vortex structure of three-dimensional laminar flow in a rectangular trench of square cross section has been carried out on the basis of the finite-volume solution of steady-state Navier-Stokes equations. aAcademy of Civil Aviation, St. Petersburg, Russia; email: isaev@SI3612.spb.edu; bDnepropetrovsk State University, Dnepropetrovsk, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 2, pp. 24-30, March-April, 2003. Original article submitted August 28, 2002.