The static pressure decreases with the increase of wall roughness in the outer vortex region.
外旋流区的静压力随着粗糙度的增大而明显减小。
On the basis of experiment, the influence of wall roughness on fire transmission and overpressure in gas explosion was investigated.
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。
Finally, the mechanisms of reduction in pressure loss and separation efficiency of the cyclone separator caused by the wall roughness are discussed.
最后对壁面粗糙度降低旋风分离器压力损失和分离效率的机理进行了分析。
On the basis of the experimental research, the significant influence of the wall roughness on the flame transmission law of the gas explosion was analyzed.
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。
A numerical simulation approach taking the wall roughness effect into account was presented to simulate the glaze ice accretion.
提出了一种可考虑粗糙度影响的瘤状冰结冰过程数值模拟方法。
The effects of stator and rotor wall roughness on the dynamic coefficients of the eccentric rotor in large gap annular flow have been investigated with numerical method.
研究结果表明：静子和转子壁面粗糙度对大间隙环流中偏心转子动特性系数有较大影响。
Metope: wall roughness affects the extent of the beautiful, uneven metope is easy to appear the phenomenon of cracking, the owner can use the naked eye or ruler check it.
墙面：墙面的平整度影响着美观的程度，不平整的墙面则易出现开裂的现象，业主可以用肉眼或标尺检查一下。
It is also discovered that the axial velocity distribution and velocity-weighted average swirl Angle at the outlet section of axial-flow pump vary with the changing of wall roughness.
研究还发现，水泵出口断面轴向流速分布均匀度和速度加权平均偏流角也随壁面粗糙度改变而改变。
The influences of the aspect ratio and wall roughness on the coolant flow characteristics, which mainly involve pressure loss, secondary flow and turbulence intensity, were investigated.
研究了高宽比和壁面粗糙度对压力损失、二次流动和紊流强度的影响。
The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
用相位多普勒颗粒测速仪（PDPA）测量了颗粒的平均与脉动速度，研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
The effect of wall roughness on gas-particle flows in a horizontal backward-facing step is studied using a phase-Doppler particle anemometer (PDPA) by measuring the mean and RMS particle velocities.
用相位多普勒颗粒测速仪（PDPA）测量了颗粒的平均与脉动速度，研究了壁面粗糙度对水平后台阶气粒两相流动的影响。
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