WAVE EXPANDER

S. V. Bulovich and R. L. Petrov

UDC 536.244; 621.512-222

A schematic description of the design of a wave expander 
is presented. A mathematical model of the operation process has been 
substantiated. The operational characteristics of a reciprocating 
wave expander have been obtained within the framework of the numerical 
integration of the system of nonstationary gas-dynamics equations 
in a one-dimensional formulation. The stages of the operation process 
have been considered in detail. The dependences of the gasdynamic 
quantities on the time in the neighborhood of the rotating valve and 
the oscillating piston have been obtained for the steady-state operating 
cycle of the wave expander. The expander proposed has been compared 
to reciprocating expanders of classical design.

St. Petersburg State Technical University, St. Petersburg, 
Russia; email: bsv@stu.neva.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 75, No. 5, pp. 51-55, September-October, 2002. 
Original article submitted February 19, 2002.

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