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發(fā)布時間: 2012-11-5 15:13
正文摘要:根據(jù)流體力學知識,我們能推出揚程方程式: 式中:D——質(zhì)點所處位置的葉輪直徑,mm;B——質(zhì)點所處位置的葉輪寬度,m; φ——排擠系數(shù)(一般為0.75~0.95),用以考慮葉片厚 ... |
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