steam velocity meaning in English

蒸汽速度

Result of numerical simulation shows that the grads of continuous phase " s velocities decreases with the presence of microbubble of which the diameter is 100 / / w , the profiles of air volume fraction in the boundary layers is similar to triangle or echelon , affected by interaction among the particle , there is a saturated air fraction , within the scope of saturated air fraction , increasing the air injection ratio can accrete the friction reduction ratio , under the condition of same air injection ratio , the free - steam velocity is larger , the effect of friction reduction is worse
计算结果表明，直径为100 m的微气泡能减小近壁面连续相的速度梯度；微气泡在边界层中的浓度分布近似为三角形或梯形分布；受粒子间相互作用的影响，存在一饱和浓度；减阻率随喷气量的增大而增大，直至饱和喷气量，此后，增大喷气量，壁面摩擦阻力变化不大；相同喷气量下，来流速度越大，减阻率越低。