Numerical analysis of double inlet two-stage inertance pulse tube cryocooler

Stirling-type Pulse Tube Cryocoolers (PTC) are designed to meet present and upcoming commercial requirements and needs with durability and low vibrations. Multistaging in Stirling type PTC is one of the major developments reported in recent times for low-temperature achievement, due to improved performance over a period of time. The current study aims to define the methodology for numerical assessment of Double Inlet Two-Stage Pulse Tube Cryocooler (DITSPTC) to achieve cryogenic temperature of 20 K. This paper performs Computational Fluid Dynamics (CFD) simulation of PTC for defining the methodology using the CFD software package and then the same methodology is extended for the analysis of DITSPTC. The system simulations are performed with frequency of 70 Hz and average pressure of 20 bar. The minimum temperatures obtained from simulations are 95 K and 20 K at the first and second stage respectively.