Under the same momentum ratios, the average normalized heat transfer coefficient of the convergingexpanding hole is larger than that of a cylindrical hole in the upstream, but lower in the downstream. 收缩扩张形孔喷出气膜对下游壁面区域的有效覆盖率远大于圆柱形孔,其展向平均冷却效率明显高于圆柱形孔;
The computed results show the momentum transfer coefficient relationship obtained is viable. 计算结果表明:本文中的动量输运系数随相对水深及滩槽宽度比的变化关系是可行的。
Momentum transfer coefficient plays an important role in computing conveyance capacity, mean apparent shear stress on the vertical interface between main channel and flood plain, mean boundary shear stress on flood plains or in main channel respectively. 复式河槽动量输运系数在计算复式河槽过流能力、滩槽交界面平均表观剪切应力和滩槽床面平均剪切应力等方面有着十分重要的作用。
Uncertainty of the partial pressure mass spectrometry calibration system has been evaluated by means of spinning rotor gauge ( SRG), which acts as reference standards. Experiments with SRC include long-term stability and dependence of tangential momentum transfer coefficient on gas species and temperature. 为了评估分压强质谱计校准装置的不确定度,对作为参考标准的磁悬浮转子规进行了大量实验,包括磁悬浮转子规的长期稳定性、切向动量传递系数随气体种类和温度的变化等。
Research on momentum transfer coefficient in compound channels 复式河槽动量输运系数研究