【摘 要】
：
阐述了全射流喷头中水射流附壁点的距离是喷头射流元件设计的关键尺寸.基于Bourque理论,采用控制面模型,计算了全射流喷头内射流附壁点的距离,并与试验结果和相关文献进行对
论文部分内容阅读
阐述了全射流喷头中水射流附壁点的距离是喷头射流元件设计的关键尺寸.基于Bourque理论,采用控制面模型,计算了全射流喷头内射流附壁点的距离,并与试验结果和相关文献进行对比,发现在射流扩散系数取9时,计算值与试验值接近.讨论了影响附壁点距离的各种因素,包括位差、壁面倾角、射流流量、射流扩散系数等.研究发现,可通过增大偏移率,增大壁面倾角来增大射流元件中附壁点距离,其中以改变壁面倾角最为显著,流量的改变几乎不影响附壁距离.研究结果对于改进全射流喷头射流元件的设计具有指导意义.
其他文献
To overcome excessive computation errors and convergence failures encountered in an iterative calculation of the reliability index using the response surface me
基于N-S方程和滑移网格技术,利用FLUENT软件对诱导轮内部流场进行了全三维非定常湍流数值模拟,获得了诱导轮内部的速度分布、静压分布以及流体压力脉动特征等重要的流动信息.
In South China, various megascopic symmetrical metazoan fossils were found in the upper Doushantuo (陡山沱)Formation of the Neoproterozoic Ediacaran.The worm-li
This paper describes shaking table tests of three eight-story building models: all are masonry structures in the upper stories, with or without frame-shear wall
An efficient solution is proposed in this article to determine the best reliable route and to prolong the lifetime of the mobile Ad-hoc networks (MANETs). In th
Investigations on the thermal-hydraulic behavior in the SCWR fuel assembly have obtained a significant attention in the international SCWR community. However, t
In this paper, we use the method of pseudo-offset migration (POM) to complete converted wave pre-stack time migration with amplitude-preservation in an anisotro
The flow field of the oil film between frictional pairs in the hydroviscous drive test rig is investigated. A three-dimensional Navier-Stokes(N-S) equation cons