内燃机流动问题数值模拟中数值方法的选用

AN INVESTIGATION OF SELECTING DIFFERENT NUMERICAL METHODS FOR SIMULATING THE INCYLINDER AIR MOTION IN I.C. ENGINES

研究内燃机流动问题数值模拟中数值方法的选用．引入多种不同差分格式（混合格式、乘方格式、指数格式）和多种不同算法（ＳＩＭＰＬＥＣ算法、速度修正及压力方程同步解法及ＰＩＳＯ算法）到内燃机流动的数值模拟中，与通常采用的上风格式、ＳＩＭＰＬＥ算法得到的数值模拟结果进行对比，寻求对该领域问题进行数值模拟的最合适的数值方法．

An investigation of selecting different numerical modeling methods for simulating the in cylinder air motion in I.C. engines is described in this paper. Various differential schemes and algorithms were used (in the numerical modeling of the in cylinder air motion in I.C. engines) and the obtained results were compared with those obtained by the conventional upwind scheme and SIMPLE algorithm method to see whether an optimum numerical method exists in this field. The related results were verified by the LDA measurement.