BINGHAM PLASTIC ANALYSIS OF ER VALVE FLOW

被引:6
作者
PEEL, DJ
BULLOUGH, WA
机构
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1994年 / 8卷 / 20-21期
关键词
D O I
10.1142/S021797929400124X
中图分类号
O59 [应用物理学];
学科分类号
摘要
Yield shear stresses and shear rates st a valve wall are derived from experimental results on a series of concentric cylinder valves. The fluid constitutive equation used for this purpose is that of a Bingham Plastic. Valve plates (which are such that the radial gap is small compared to its mean pitch) are taken to be parallel so far as the derivation of the how upsilon's pressure upsilon's geometry model is concerned. A range of electrode separations from 0.5 to 1.0 mm are used with how velocities being limited to the region where the viscous pressure drop component is below that caused by the electro stress. Results show that (away from the region of low shear rates and high voltages) the wall stresses for equivalent conditions are comparable for different valves, for a range of applied field strengths and mean flow velocities. Thus, provided the hysteretic region is avoided the fluid can be treated as a Bingham continuum with some stated reservations. However, this is only applied with precision for the truly corresponding situations defined in the paper.
引用
收藏
页码:2967 / 2985
页数:19
相关论文
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