This paper discusses similarity criterion in similarity theory, and how to derivate similarity criterion of mathematics simulation model by dimensional analysis. A example for this method is given.
讨论了相似理论中的相似准则，以及如何用因次分析法推导数学仿真模型中的相似准则，并举例说明了这种方法的实用性。
Some results are as follows:(1) A 1:25 scale model was built following the gravity similarity criterion. The gate closing and opening force in hydrodynamic conditions was studied.
按重力相似准则建立了1：25溪洛渡泄洪洞模型和事故闸门水力相似模型，研究了该事故闸门动水闭门持住力和动水启门力。
Basing on the heat conduct model of gun charge, the heat transfer of gun charge is analyzed with similarity criterion.
在建立火炮发射装药热传导模型基础上，采用相似原理对其进行了分析。
The test features, model similarity, measurement and analysis of wave, acquisition and processing of data, seakeeping criterion, test procedures and economical analysis are given in detail.
文中介绍了试验特点、模型和相似条件、波浪测试及分析、数据采集与处理、耐波性标准、试验步骤和结果及其经济性等等。
Based on real "back to back" small gas turbine, using similarity criterion, a non-rotating model experiment rig, together with hardware and software test system, is built.
本文以真实“背靠背”小燃机为模型，以相似准则为基准，自行设计了非转模型实验台，并且搭建了实验台软硬件测试系统。
We can study the mechanism and make predictions by simulating the model. Similarity criterion is the conditions which make the model phenomenon similar to the prototype phenomenon.
物理模型是由将影响某物理现象或过程的因素按比例缩小后制作而成，通过模拟可以研究其机理并进行预测。
We can study the mechanism and make predictions by simulating the model. Similarity criterion is the conditions which make the model phenomenon similar to the prototype phenomenon.
物理模型是由将影响某物理现象或过程的因素按比例缩小后制作而成，通过模拟可以研究其机理并进行预测。
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