摘要
模型试验表明,高速含沙水流的含沙量在0～150kg/m^3时,过坎挑流的挟气能力基本与清水相同;若含沙量继续增大,则挟气能力减少。采用破开算子法求解浑水气泡扩散方程,可以给出精度较高的结果,由坎后近壁掺气浓度沿程变化知,浑水掺气浓度衰减规律与清水相似,但衰减速度较快,需保护长度比清水稍短些。
It is shown through hydraulic model tests that when sediment concentration of muddy flow in high velocity is 0～150kg/m^3, the aeration capacity through aerator is basically the same as that of clear water and if sediment concentration is increasing continuously, the aeration capacity will be reduced. To calculate diffusion equation of bubbles in muddy water by the method of rupture operator, it can have more precise results. It is learnt from the changes of aeration density behind aerator and somewhere near the wall that the law of density reduction in muddy water is similar to that in clear water, but the speed of reduction is faster and the protected length shorter.
出处
《人民黄河》
CAS
北大核心
1991年第6期53-57,共5页
Yellow River
