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第五章 相似原理与量纲分析 - PowerPoint PPT Presentation


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第五章 相似原理与量纲分析. 5.1 相似原理. 5.2 量纲分析法. 5.3 相似与模型试验. 实践是检验真理的唯一标准!. ( 1 )第三章是理论研究方法,但除了极少数问题外,很难得到理论解析解,而必须借助于实验方法。 ( 2 )实验研究方法有实物实验、比拟实验和模型实验三大类。. ( 3 )实物实验是用仪器实测原型系统的流动参数,它对于较小的模型系统比较合适,对大型系统就很难; 比拟实验有水电比拟和水气比拟,是利用电磁场来模拟流场和用液体来模拟气体,实施起来也有诸多限制;

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第五章 相似原理与量纲分析

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