Computer Simulation of Two-Stage Reciprocating Compressors
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چکیده
Computer simulation of the thermodynamics and dynamics of an intercooled two-stage two-cylinder reciprocating air compressor system is reported and the obtained results discussed. The main emphasis is placed upon modeling the pressure-wave motion in the interconnecting pipework for which the governing equations were solved by means of two different methods: the characteristic mesh method and the finite difference method which utilizes Richtmyer's two-step version of the Lax-Wendroff scheme. For the treatment of boundaries several different modi fications of the numerical schemes were explored in order to improve the accuracy and to increase the computing speed. Both methods yielded predictions of the pressure-crank angle diagrams in cylinders and other positions in the compressor installations which were generally in acceptable agreement with the experimental records. Deficiencies were notable only in the predictions of the higher frequency pressure pulsations.
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تاریخ انتشار 2014