System performance analysis of a Gifford-McMahon (GM) cooler was carri
ed out using the half-cycle mean model of a regenerator and instantane
ous solutions of the mass and momentum equations. A PC-based simulatio
n package GMSYS was also developed for system design analysis of a sin
gle-stage GM cryocooler. It is shown experimentally that the predicted
values agree very well with test results.