制冷循环稳态仿真的联立模块法

Simultaneous-modular approach for steady simulation of refrigeration cycle

为了克服顺序模块法和联立方程组法的各自缺点,融合各自优点,在制冷循环稳态仿真中引入联立模块法。首先按照功能独立原则对制冷循环进行模块化分解,制冷循环的结构模型由部件模块之间的连接关系表示,其中每个连接对应一组连接方程组;然后联立部件模块方程组、连接方程组和制冷剂总质量守恒方程组成制冷循环模型的模块方程组;最后采用离散数值差商计算Jacobi矩阵,用带松弛因子ω的New-ton法求解,另外采用数值延拓法拓展收敛域。联立模块法通用性和实用性好,可以解决模块共享与知识产权保护之间的矛盾,有利于制冷循环仿真开发的专业化分工和社会化协作,提高开发质量和效率。

Simultaneous-modular approach is introduced,which succeeds respective advantages excluding drawbacks from sequential-modular approach and simultaneous equations approach.At first,refrigeration cycle is decomposed into a set of component-modular on the basis of function-independent principle,and system model of refrigeration cycle can be figured out by means of links;then modular equations,link equations,and total refrigerant mass conservation equation assembles to system model of refrigeration cycle,which is solved by numeric difference quotient Jacobi matrix and Newton algorithm with a relaxation factor ω,moreover convergence region is able to access enough continuation by the numeric homotopy method.The simultaneous-modular approach can trade off between share and protection of intellectual property,afford to division and cooperation of labor,and succeed high quality and efficiency of development.