未分类题

在附壁紊流中，粘性底层厚度艿比绝对粗糙高度△大得多的壁面称为： A.水力光滑面 B.水力过渡粗糙面 C.水力粗糙面 D.以上答案均不对

A.水力光滑面
B.水力过渡粗糙面
C.水力粗糙面
D.以上答案均不对

【参考答案】

A
提示：参看紊流沿程阻力系数相关内容。
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