COMPARISON BETWEEN EXPERIMENTAL AND NUMERICAL RESULTS ON A 300 HZ THERMOACOUSTICALLY-DRIVEN PULSE TUBE COOLER

摘要

This article introduces our recent research work on a 300Hz thermoacoustically-driven pulse tube cooler. A lowest no-load temperature reaches 79.6 K with the mean pressure and the inlet pressure ratio being 3.96 MPa and 1.21 respectively. Modifications, which include the value of Nusselt number and the numerical model of calculating the impendence of the inertance tube, are done to improve the numerical program based on the linear thermoacoustic model. Extensive numerical calculations have been done for comparison with experimental results. Dynamic and thermal haracteristics of the pulse tube cooler are obtained numerically. By doing this, we intend to improve the numerical model for better design in the future.