Measurements of Maximum Surface Pressure Deficits in Modeled Atmospheric Vortices
Measurements of Maximum Surface Pressure Deficits in Modeled Atmospheric Vortices
复制标题
模拟大气涡旋中最大表面压力不足的测量
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
J. Snow
中科院分区：
文献类型：
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作者：
R. Pauley;C. R. Church;J. Snow
本文研究了在Ward型涡模拟器中模拟的涡下壁面静压场的时间特性，着重测量了最大表面压差。为此目的设计了一个压力测量系统，该系统能够以基本上不失真的形式解决表面压力场的重要瞬态特征，并采用了减少涡流漂移影响的测量技术。测量的最大表面压力赤字和流量和几何形状的依赖关系，以及详细研究的最大表面压力赤字的大小作为涡流比的函数。文中还给出了多涡流动中各子涡的表面压力分布。最大的赤字压力被发现与渗透的旋涡破裂的表面。表面压力赤字的大小与。方...
Abstract Time-dependent features of the wall static pressure field beneath vortices modeled in a Ward-type vortex simulator have been investigated with emphasis on measurements of maximum surface pressure deficit. A pressure-measuring system was devised for this purpose which is capable of resolving important transient features of the surface pressure field in an essentially undistorted form, and measurement techniques were employed which reduced the influence of vortex wander. Measurements of maximum surface pressure deficits and their dependence on flow rate and geometry are presented, as well as a detailed study of the magnitudes of the maximum surface pressure deficits as a function of swirl ratio. Also presented are surface pressure distributions in individual subsidiary vortices in a multiple vortex flow. The greatest deficit pressures are found to be associated with the penetration of the vortex breakdown to the surface. The magnitude of the surface pressure deficit is closely related to the. squar...