Review on the Research of Orifice Plate Hydraulic Characteristics

2014 ◽  
Vol 590 ◽  
pp. 101-104
Author(s):  
Jia Hong Wang ◽  
Wan Zheng Ai
Keyword(s):  
Energy Loss ◽  
Orifice Plate ◽  
Effective Energy ◽  
Hydraulic Characteristics ◽  
Energy Dissipater

Orifice plate energy dissipater, as a kind of effective energy dissipater with characteristics of economic, has become welcomed more and more by hydraulics researchers. Although many researches have been conducted on orifice plate’s hydraulic characteristics, there are many other issues, which are closely related with orifice plate’s energy loss and cavitations, needed to be solved. Some issues on orifice plate’s hydraulic characteristics have been put forward in this paper so as to strengthen research in this field.

scholarly journals Correction and laboratory investigation for energy loss coefficient of square-edged orifice plate

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110185
Author(s):  
Ai Wanzheng ◽  
Zhu Pengfei
Keyword(s):  
Energy Loss ◽  
Model Experiment ◽  
Plate Thickness ◽  
Primary Objective ◽  
Loss Coefficient ◽  
Orifice Plate ◽  
Discharge Tunnel ◽  
Energy Dissipater ◽  
Contraction Ratio ◽  
Relative Errors

A lot of studies have shown that the hydraulic characteristics of orifice plate are mainly controlled by its contraction ratio, but the thickness of square-edged orifice plate also has many impacts on energy loss characteristics. The primary objective of this study was to investigated the effects of square-edged orifice plate thickness on energy loss characteristics. In this paper, the effects of square-edged orifice plate thickness on energy loss characteristics are investigated by numerical simulation using CFD. Orifice plate discharge tunnel is axial symmetric, two dimensional numerical simulations of orifice plate discharge tunnel flow was used. The equation (9) for calculating energy loss coefficient of square-edged orifice plate energy dissipater considering the influence of thickness is proposed. The results of the present research demonstrate that energy loss coefficient decreases with increase of the orifice plate thickness. The results of model experiment are consistence with the results calculated by using rectified equation in present paper. The CFD simulations and Model experiment for the flow through an orifice plate are carried out. For square-edged orifice plate energy dissipater, the relative orifice plate thickness T/D has remarkable impacts on its energy loss coefficient ξ. The Traditional equation (8) is corrected by numerical results. The equation (9) for calculating energy loss coefficient of square-edged orifice plate energy dissipater considering the influence of thickness is proposed and this equation is available in the condition of d/D = 0.4–0.8, T/D = 0.05–0.25, and Re > 105(Re is Reynolds number). Comparing with the physical model experimental data, the relative errors of equation (9) is smaller than 15%.

Effective energy-loss coefficients in the vibration of rod structures

2015 ◽  
Vol 35 (10) ◽  
pp. 737-739
Author(s):  
A. N. Chukarin ◽  
A. P. Sychev ◽  
S. F. Podust
Keyword(s):  
Energy Loss ◽  
Effective Energy ◽  
Loss Coefficients ◽  
Rod Structures

Experimental and Numerical Study of Hydrodynamic Cavitation of Orifice Plates with Multiple Triangular Holes

2012 ◽  
Vol 256-259 ◽  
pp. 2519-2522 ◽  
Author(s):  
Zhi Yong Dong ◽  
Qi Qi Chen ◽  
Yong Gang Yang ◽  
Bin Shi
Keyword(s):  
Velocity Profile ◽  
High Speed ◽  
Numerical Study ◽  
Three Dimensional ◽  
Flow Characteristics ◽  
Orifice Plate ◽  
Hydrodynamic Cavitation ◽  
High Speed Photography ◽  
Hydraulic Characteristics ◽  
Image Velocimetry

Hydraulic characteristics of orifice plates with multiple triangular holes in hydrodynamic cavitation reactor were experimentally investigated by use of three dimensional particle image velocimetry (PIV), high speed photography, electronic multi-pressure scanivalve and pressure data acquisition system, and numerically simulated by CFD software Flow 3D in this paper. Effects of number, arrangement and ratio of holes on hydraulic characteristics of the orifice plates were considered. Effects of arrangement and ratio of holes and flow velocity ahead of plate on cavitation number and velocity profile were compared. Distribution of turbulent kinetic energy and similarity of velocity profile were analyzed. And characteristics of cavitating flow downstream of the orifice plate were photographically observed by high speed camera. Also, a comparison with flow characteristics of orifice plate with hybrid holes (circle, square and triangle) was made.

Construction of database of effective energy-loss functions

2003 ◽  
Vol 35 (2) ◽  
pp. 174-178 ◽  
Author(s):  
T. Nagatomi ◽  
Y. Takai ◽  
B. V. Crist ◽  
K. Goto ◽  
R. Shimizu
Keyword(s):  
Energy Loss ◽  
Loss Functions ◽  
Effective Energy ◽  
Energy Loss Functions

scholarly journals Deriving Effective Energy Loss Function for Silver from XPS Spectrum

2012 ◽  
Vol 32 ◽  
pp. 165-172 ◽  
Author(s):  
T. Tang ◽  
Z.M. Zhang ◽  
Z.J. Ding ◽  
H. Yoshikawa
Keyword(s):  
Energy Loss ◽  
Loss Function ◽  
Effective Energy ◽  
Energy Loss Function

Effective energy loss per electron-ion pair in proton aurora

1994 ◽  
Vol 12 (10) ◽  
pp. 1071
Author(s):  
B. V. Kozelov ◽  
V. E. Ivanov
Keyword(s):  
Energy Loss ◽  
Ion Pair ◽  
Effective Energy ◽  
Proton Aurora
Sign in / Sign up

Export Citation Format

Share Document