convergent section meaning in English
喷管的收敛部分
Examples
- Shock tube ; conical convergent section ; detonation ; finite volume tvd scheme
激波管收缩截面爆轰有限体积tvd格式 - The numerical simulation of axisymmetric two - dimensional shock tube is studied , which has a conical convergent section , and its driving gas is the hot product of hydrogen oxygen detonation . finite volume tvd scheme is adopted and the mesh is local orthogonal . the primitive equations are euler s equations of multi - component flow . the new method of eliminating numerical oscillation at the interface of two materials is extended to two dimensions . the mechanical character of this shock tube is analyzed
对由前向爆轰产生驱动气体并具有局部锥形收缩截面的轴对称激波管利用两相常比热完全气体的欧拉方程组和有限体积tvd格式在局部正交的网格上进行了二维数值模拟。将消除两种介质界面处数值振荡的新方法成功地推广到二维情况。分析了该激波管的力学特性。 - A reasonable position of driving nozzle helps to achieve the maximum material flow that also depends on other parameters such as backpressure , properties of conveyed material and driving gas . it is observed that , an increase of convergent section angle is harmful to the pneumatic conveying system , and also influences on the mass flow rate of conveyed material , the distribution of static pressures in injector and the pressure drops of conveying pipe . in addition , within a reasonable scope of air mass rate , increasing the driving jet velocity is more advantageous than enlarging the dimension of driving nozzle
试验研究发现，气体喷嘴位置对气固喷射器的输送能力影响最大，气体喷嘴存在某一最佳位置，而这一最佳位置与背压、输送物料特性和输送风特性相关联；气固喷射器的收缩角对其输送能力、内部静压分布和输送管阻力特性均有适量影响，收缩角增大对整个输送系统均不利；在适当的输送风范围内，提高气体喷嘴出口速度比扩大气体喷嘴尺寸更为有利，但气体喷嘴出口速度过高会增加气固喷射器和输送管内的能量损耗，给输送带来不利的影响；系统背压与气固喷射器的气体喷嘴出口速度的选取有关。