請教流體力學觀念! - 考試

By Audriana
at 2013-08-07T22:30
at 2013-08-07T22:30
Table of Contents
雷諾數的物理意義是慣性力與黏滯力之比值,可用以判斷流場是層流或紊流,
但在推導不可壓縮內流場時,皆說流場為層流流速固定(a=0),於是流體質點
慣性力a=0,但在觀念中慣性力=ma,若a=0 迳ma=0,豈不雷諾數=0?但實際層流
流場雷諾數不為0,請問我觀念哪裡錯了? 謝謝~
--
但在推導不可壓縮內流場時,皆說流場為層流流速固定(a=0),於是流體質點
慣性力a=0,但在觀念中慣性力=ma,若a=0 迳ma=0,豈不雷諾數=0?但實際層流
流場雷諾數不為0,請問我觀念哪裡錯了? 謝謝~
--
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