Simulation of Linear Compressors with COMSOL and Its Experimental Verification

Based on the purpose of producing a brief and efficient scheme for design of linear compressors,we obtained an expression of gas damping force and gas elastic force in the moving-magnet linear compressor.Then a couple model,which combined pneumatic model with electromagnetic model,was built in COMSOL with a commercial smallscale Stirling Cryocooler prototype.The dynamic properties under different load condition were simulated and the result agreed well with the result in SAGE.Then the tests of specific thrust property and displacement of piston in different conditions were carried out to validate the model.