MATHEMATICAL MODEL OF A RECUPERATIVE HEAT EXCHANGER IN A TWO-DIMENSIONAL FORMULATIONV. V. Goryainov and A. D. Chernyshov UDC 621.56:519.8 A two-dimensional model of a recuperative heat exchanger which allows calculation of flows through a heat-transfer wall and temperature at any point of it has been developed. The results of the calculations are in satisfactory agreement with experimental data. Voronezh State Technological Academy, Voronezh, Russia. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 76, No. 6, pp. 161-167, November-December, 2003. Original article submitted October 29, 2002; revision submitted March 18, 2003.