低温回热器模型REGEN

回热器是低温制冷机的核心组件,完成回热器的热设计与结构设计等于说完成了回热式低温制冷机设计的主体。通过建立回热器内流体与回热填料的质量方程、动量方程和能量方程并求解可确定制冷机的理论设计性能指标。运用解析方法求解回热器数学物理模型相当困难,因此广泛采用数值求解方法。总结了目前国际上主流的回热器物理数学模型,介绍并比较回热器性能仿真软件REGEN、Sage和DeltaE,重点介绍REGEN的原理、特点、功能和应用等方面,并指出其不足之处和发展方向。

REGEN-A numerical model for cryogenic regenerator

Regenerator is the key component of a cryogenic refrigerator.The thermal and structure design of the regenerator dominates the maximun theoritical performance of the cryocooler,which could be modeled by a set of equations on mass,momentum and energy balances for the working fluid and the mateiral.Because these equations are difficult to be solved analytically,numerical methods are widely used with the assurance of accuracy and realizability.Some leading numerical models,REGEN,Sage,and DeltaE,for cryogenic r...