Dynamic modelling of a Gifford-McMahon cryorefrigerator
作者： C. Minas , P.M. Hualde
DOI: 10.1016/0011-2275(92)90295-L
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摘要: Abstract The dynamic characteristics of a pneumatically driven Gifford-McMahon cryorefrigerator are modelled when the is operating in steady state regime. mathematical model, which includes dynamic, fluid and thermodynamic effects, consists set six simultaneous differential equations. model variables were determined to be gas masses various chambers cryocooler's two stages, displacer's position velocity. non-linear time-varying system equations solved by numerical integration routines that use Adams - Moulton method with an adaptive step size user specified tolerance. A direct comparison algorithm predicted results actual experimental data indicates models trends physical phenomena accurate fashion.
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