流量計(jì)的儀表常數(shù)即雷諾數(shù)的介紹： 測(cè)量管內(nèi)流體流量時(shí)往往必須了解其流動(dòng)狀態(tài)、流速分布等。雷諾數(shù)就是表征流體流動(dòng)特性的一個(gè)重要參數(shù)?！ ×黧w流動(dòng)時(shí)的慣性力Fg和粘性力(內(nèi)摩擦力)Fm之比稱為雷諾數(shù)。用符號(hào)Re表示。Re是一個(gè)無(wú)因次量?！ ×黧w力學(xué)中表征粘性影響的相似準(zhǔn)數(shù)。為紀(jì)念O.雷諾而命名，記作Re。Re=ρvL/μ，ρ、μ為流體密度和動(dòng)力粘度，v、L為流場(chǎng)的特征速度
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2011年1月1日
流量計(jì)的儀表常數(shù)即雷諾數(shù)的介紹
Tags: 流量計(jì)的儀表常數(shù)即雷諾數(shù)的介紹
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