COMPUTER SIMULATION OF A ONE-CYLINDER RECIPROCATING COMPRESSOR USING A HYBRID COMPUTER

摘要

The hybrid simulation of a compressor as described in the following, is part of a project, the objective of which is: a) to provide a basis for the design of self-acting valves, and b) execution in practice of a valve design, mainly intended for experimental check on theory. Reports on other parts of the project are Ml DO [3]. Preceding to the realization of the hybrid simulation, a physical model of the piston compressor was set up to form a basis for the derivation of mathematical equations, with which the operating compressor may be simulated. This simulation took place, in the first instance, by means of numerical methods of solution, using a digital computer. The results were compared with experimental results from a test compressor, containing valves of own design. This design was such, that the numerical values of coefficients, necessary for the computations, could be determined experimentally from static measurements to parts of models of parts of the experimental compressor. This made it possible for the values of the various coefficients, such as flow coefficient, drag coefficient and spring coefficients as used in the simulation, to agree accurately to those of the experimental compressor. Although the results of the simulations did not agree in every detail with the experimental results, there was no doubt that the simulation was a very useful one.