HEAT TRANSFER FROM A JET FLOWING INTO A CLOSED CAVITYG. V. Tkachenko and B. A. Uryukov UDC 532.526 The exact solution of the equations of incompressible-fluid dynamics which is interpreted as jet flow in a closed cavity is found. The boundary-layer equations on the cavity walls are obtained and the problem of heat exchange between the jet and the walls is solved. It is shown that as the jet source moves away from the cavity bottom, the Nusselt number decreases exponentially. Institute of Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine; email: firstname.lastname@example.org. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 1, pp. 65-70, January-February, 2003. Original article submitted May 31, 2002.