试验分析认为，水流流态，壁面粗糙度和壁面曲率对边界层特性有明显的影响。
Analytical results show that the now pattern, wall roughness and wall curvature have obviously effect on the boundary layer hydraulic characteristics.
在试验的基础上，研究了瓦斯爆炸过程中壁面粗糙度对火焰传播速度和超压的影响。
On the basis of experiment, the influence of wall roughness on fire transmission and overpressure in gas explosion was investigated.
实验结果表明当壁面粗糙度超过1%时摩擦系数随着壁面相对粗糙度的增加而增加。
The friction factor obtained from the experiments increases with the surface roughness increase when the relative roughness is greater 1%.
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