Vortex Flow Controllers in Sanitary Engineering

1984 ◽  
Vol 106 (2) ◽  
pp. 129-133 ◽  
Author(s):  
H. Brombach
Keyword(s):  
Flow Control ◽  
Flow Pattern ◽  
Flow Resistance ◽  
Vortex Flow ◽  
Vortex Chamber ◽  
Control Problems ◽  
Inlet Port ◽  
Input Pressure ◽  
Conical Vortex ◽  
Moving Parts

Flow control problems in combined sewerage systems can be solved with the aid of a new variation of the vortex amplifier. This valve has no moving parts, and comes under the category of pure fluidics; it has a conical vortex chamber and a single inlet port. Depending on the level of water in the vortex chamber the flow pattern may be either axially symmetrical or axially asymmetrical. This effect enables the device to alter its flow resistance in response to the input pressure. Several hundred of this type of the flow controller are already in operation. An example of their application is described below.

A CFD Analysis for the Advanced Accumulator

2014 ◽  
Author(s):  
Donghua Lu ◽  
Kuo Wang ◽  
Qianhua Su ◽  
Jun Xing
Keyword(s):  
Fluid Dynamics ◽  
Flow Control ◽  
Flow Pattern ◽  
Flow Rate ◽  
Vortex Chamber ◽  
Flow Chamber ◽  
High Flow ◽  
Low Flow ◽  
Cfd Analysis ◽  
Computational Fluid Dynamics Cfd

A new design for the flow control component of an advanced accumulator (ACC) was introduced and numerically investigated in the paper. The flow control component can produce high flow rate and low flow rate at the different stages during the safety injection. The FLUENT computational fluid dynamics (CFD) was used in the simulation of the flow pattern in the flow chamber and the outlet. The flow pattern and pressure gradient in the vortex chamber were investigated. The results show the design can realize the high flow and low flow in this design.

Flood Protection by Vortex Valves

1981 ◽  
Vol 103 (4) ◽  
pp. 338-341 ◽  
Author(s):  
H. Brombach
Keyword(s):  
Flow Control ◽  
Control Function ◽  
Vortex Chamber ◽  
Flood Protection ◽  
Bad Weather ◽  
Conical Vortex ◽  
Flood Retention

The flow control function of a flood retention reservoir is taken care of by two double-controlled conical vortex valves. The nozzle diameters of these valves are 900 mm, the diameter of the vortex chamber being 2700 mm. The rate of the outflow to be controlled is up to 8 m3/s. The valves were installed in the spring of 1980 and will be put into service in 1981. Their purpose is to protect a town from floods caused by bad weather.

Boundary Layer Effects in the Turbulent Spiral Vortex Flow of a Compressible Fluid

1968 ◽  
Vol 183 (1) ◽  
pp. 179-188 ◽  
Author(s):  
B. F. Scott
Keyword(s):  
Boundary Layer ◽  
Vortex Flow ◽  
Free Stream ◽  
Three Dimensional ◽  
Cross Flow ◽  
Radial Pressure ◽  
Vortex Chamber ◽  
Adiabatic Wall ◽  
Spiral Vortex ◽  
Momentum Integral

Because of the characteristically narrow impeller tip width in a proposed supersonic centrifugal compressor design, boundary layer effects in the vortex chamber are likely to be significant. The radial pressure gradient in the chambers sweeps retarded fluid towards the centre of curvature of the streamlines, thereby creating a ‘cross-flow’ in the boundary layer which is three-dimensional. Although the flow geometry has axial symmetry, the cross-flow is not independent of the streamwise flow. The momentum—integral method is adopted, together with assumptions concerning the velocity profiles; the energy equation is solved with the assumption of an adiabatic wall. Simultaneous solution of the free stream and boundary layer equations yields results emphasizing the critical dependence of the transverse deflection and growth of the boundary layer on the whirl component of the velocity. Separation cannot be predicted, but effects in the free stream can be estimated when the perturbations are small. Although the results are related to compressor performance, the method is generally applicable in situations where the idealizing assumption of spiral vortex flow is acceptable.

Neural network approaches to some model flow control problems

1997 ◽  
Author(s):  
Yongseung Cho ◽  
Ramesh Agarwal ◽  
Kyungmoon Nho ◽  
Yongseung Cho ◽  
Ramesh Agarwal ◽  
...  
Keyword(s):  
Neural Network ◽  
Flow Control ◽  
Control Problems ◽  
Model Flow ◽  
Network Approaches

scholarly journals Vortex flow on the wing of aircraft and flow control to improve lift properties

2019 ◽  
Vol 1268 ◽  
pp. 012067 ◽  
Author(s):  
E E Mamonova ◽  
V G Soudakov ◽  
A V Voyevodin
Keyword(s):  
Flow Control ◽  
Vortex Flow

Experimental Study by Visualization of Vortex Flow on Free Surface of Water in Vortex Chamber Fixed Guide Vane

2003 ◽  
Vol 2003.39 (0) ◽  
pp. 81-82
Author(s):  
KOUICHI UTSUNO ◽  
SHOUYA MATSUMOTO ◽  
KENKOU KATOU ◽  
AKIRA OGAWA
Keyword(s):  
Experimental Study ◽  
Free Surface ◽  
Vortex Flow ◽  
Guide Vane ◽  
Vortex Chamber
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