Low Pressure Differential Discharge Characteristics of Saturated Liquids Passing Through Orifices

1996 ◽  
Vol 118 (3) ◽  
pp. 520-525
Author(s):  
T. J. Rohloff ◽  
I. Catton
Keyword(s):  
Experimental Investigation ◽  
Low Pressure ◽  
Pressure Differential ◽  
Sharp Edge ◽  
Orifice Diameter ◽  
Discharge Characteristics ◽  
Corner Radius

An experimental investigation has been performed to determine the effect of variation in the length-to-diameter ratios on the discharge characteristics of saturated liquids passing through square edge orifices subjected to low pressure differentials. Experiments were performed to confirm reported results for sharp edge orifices and for round edge orifices with appreciable ratios of inlet corner radius to orifice diameter.

Some Numerical Simulations and an Experimental Investigation of a Finger Seal

2005 ◽  
Author(s):  
Minel J. Braun ◽  
Hazel M. Pierson ◽  
Hongmin Li
Keyword(s):  
Experimental Investigation ◽  
High Pressure ◽  
Pressure Drop ◽  
Numerical Simulations ◽  
Mechanical Performance ◽  
Low Pressure ◽  
Pressure Differential ◽  
Experimental Results ◽  
Axial Pressure ◽  
Brush Seals

Finger seals (FS) are compliant seal configurations. Unlike brush seals, they exhibit hydrodynamic lifting capabilities which allow non-contact sealing between stationary and rotating members. The compliance combined with the non-contacting feature allows both axial and radial adjustment of the seal to the rotor excursions without endangering the integrity of the former. The embodiment of a two-layer finger seal with high pressure (1c) and low pressure (1b) laminates is shown in Figure1. In this paper we shall analyze the thermo-hydraulic and mechanical performance (axial and radial deformations and displacements) of a representative repetitive cell that contains four high pressure and four low-pressure fingers arranged axially in a staggered configuration, and subject to rotation and an axial pressure drop. We shall also present experimental results pertaining to the seal deformation under axial pressure differential and rotation.

Experimental Investigation of Transient Response and Turbocharger Coupling for High and Low Pressure EGR Systems

2014 ◽  
Vol 7 (2) ◽  
pp. 977-985 ◽  
Author(s):  
David Heuwetter ◽  
William Glewen ◽  
David E. Foster ◽  
Roger Krieger ◽  
Michael Andrie
Keyword(s):  
Experimental Investigation ◽  
Transient Response ◽  
Low Pressure

DC Corona Discharge Characteristics and Ion-Flow Distribution for Several Types of Rods under Low Pressure

1986 ◽  
Vol IA-22 (3) ◽  
pp. 547-553 ◽  
Author(s):  
Tsuneo Watanabe ◽  
Hideo Fujinami ◽  
Tadasu Takuma ◽  
Yoshitaka Sunaga
Keyword(s):  
Corona Discharge ◽  
Flow Distribution ◽  
Low Pressure ◽  
Discharge Characteristics ◽  
Ion Flow

Experimental Investigation on Electromagnetic Attenuation by Low Pressure Radio-Frequency Plasma for Cavity Structure

2016 ◽  
Vol 18 (1) ◽  
pp. 62-66 ◽  
Author(s):  
Xiang He ◽  
Yachun Zhang ◽  
Jianping Chen ◽  
Yudong Chen ◽  
Xiaojun Zeng ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Radio Frequency ◽  
Low Pressure ◽  
Radio Frequency Plasma ◽  
Frequency Plasma ◽  
Cavity Structure

Characteristics of Miniature Short-Tube Orifice Flows

1989 ◽  
Vol 203 (5) ◽  
pp. 351-358 ◽  
Author(s):  
T A Fox ◽  
J Stark
Keyword(s):  
Experimental Investigation ◽  
Critical Pressure ◽  
Fuel Injection ◽  
Flow Characteristics ◽  
Head Loss ◽  
Differential Pressure ◽  
Pressure Differential ◽  
Contraction Parameter ◽  
Volumetric Discharge ◽  
Short Tube

This paper presents the results of an experimental investigation into the flow characteristics of miniature short-tube orifices of a type commonly used for fuel injection. From measurements of differential pressure and volumetric discharge it is shown that these devices are susceptible to a cavitation-induced instability phenomenon known as hydraulic flip. It was found that this instability is limited to orifices of length less than fourteen diameters and occurs at a critical pressure differential which varies as a function of the orifice l/d ratio and contraction parameter β. In addition, the performance of the device is examined in terms of the head loss characteristics and it is shown that the mechanisms associated with hydraulic flip have a significant effect on the efficiency of discharge.

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