本文报导了用浅水模拟法和流动显示技术获得的各种不同形状柴油机燃烧室中的挤流流谱;论证了在这一研究中应用浅水模拟法的理论依据和应遵循的准则;并把实验结果和其他方法作了对比。结果表明,浅水模拟法用于研究挤流是有效的。并再次证明,燃烧室内的环涡主要是附面层分离造成的,影响流谱的主要因素是燃烧室的形状。 In this paper, the extrusion fluid flow spectra of various shapes of diesel engine combustion chambers obtained by the shallow water simulation and the flow display technology are reported. The theoretical basis and the guidelines to be followed in this study are demonstrated. The experiments The results are compared with other methods. The results show that the shallow water simulation method is effective for studying crowded flow. And once again proved that the combustion chamber vortex is mainly caused by the separation of the surface layer, the main factor affecting the flow spectrum is the shape of the combustion chamber.