Simulation of Swing Check Valve using Autonomous Valve CFD
Wednesday, December 23, 2020
Simulation of Swing Check Valve using Autonomous Valve CFD
By
Aaditya Ruiker
Blog Author - Aaditya Ruiker
Written by Aaditya Ruiker
Blog Author - Prathamesh Badadal
Written by Prathamesh Badadal
Approximately
5 Minutes Reading
Approximately
5 Minutes Reading
Check valves are used to protect critical equipment in a pipeline from flow reversal. This is crucial in cases of pumps and compressors where backflow can damage internal parts. These are automatically operated owing to the pressure difference between the upstream and downstream sides of the valve. These open with forward flow and close against the reverse flow, thus no need for actuators or operators. These are also called non-return valves.
An interesting application is where the check valve connects primary and secondary systems of the pipeline, and they avoid the backflow in case of a pressure surge in the secondary systems.
A type of check valve is: Swing check valve
Swing Check Valve
Figure 1: Swing Check Valve
Understanding the Swing Check Valve
The valve closure member consists of a valve disc which is connected to a hinge/shaft with a lever. Another arrangement is the lever and an external spring which is used in high-pressure flow applications. In this the valve closure member swings about a hinge or shaft which is outside the seat. The forward flow pushes the disc away from the seat while the reverse flow causes the disc closure. As compared to other types of check valves swing check valves give the lowest pressure drop.
To elaborate :
Valve closure element: Disc
Valve closure mechanism:
a) Lever connected to a hinge
b) A lever connected with an external spring
It’s advantages are :
a) Low-Pressure drop
b) Easy to maintain
It’s disadvantage is that it cannot be used in the pulsating type of flows.
About the simulations
The simulation was performed with the objective of obtaining the flow performance coefficients of DN100 swing check valve. The angle of opening varies from 10 degree to 45 degree of opening. The class of the valve is 150. As shown below is the image of the flow lines of the swing check valve at maximum opening. The maximum gross Cv is 547 with corresponding coefficient of hydrodynamic torque -1.2196 and pressure drop 0.69 bar. Below let’s have a look at some visualization of the results.
Velocity contour for particular opening
Figure 2: Velocity contour for particular opening of the Swing Check Valve
Pressure contour for particular opening
Figure 3: Pressure contour for particular opening of the Swing Check Valve
Streamlines for particular opening
Figure 4: Streamlines for particular opening of the Swing Check Valve.
Animation of Swing Check Valve operation.
The animation reveals the variation in velocity of the flow with change in opening conditions.
To know more about the simulation visit : Simulation of Swing Check Valve using Autonomous Valve CFD
Blog Author - Aaditya Ruiker
Aaditya Ruiker
Aaditya Ruiker is a CFD support Engineer at Centre for Computational Technologies Private Limited (CCTech), Pune. He loves to work in fields physics and mathematics. Skilled in OpenFOAM, Fluent, C, MATLAB, CAD Modelling. He has completed his M.Tech in Thermal and Fluids Engineering from (Dr. BATU), Lonere, Raigad. His areas of interest are Heat Transfer, Fluid Mechanics, Computational Fluid Dynamics, Numerical Methods, Operation Research modeling. Driving and traveling, playing cricket and chess are his hobbies and he likes to explore historical places.
Blog Author - Aaditya Ruiker
Aaditya Ruiker
Aaditya Ruiker is a CFD support Engineer at Centre for Computational Technologies Private Limited (CCTech), Pune. He loves to work in fields physics and mathematics. Skilled in OpenFOAM, Fluent, C, MATLAB, CAD Modelling. He has completed his M.Tech in Thermal and Fluids Engineering from (Dr. BATU), Lonere, Raigad. His areas of interest are Heat Transfer, Fluid Mechanics, Computational Fluid Dynamics, Numerical Methods, Operation Research modeling. Driving and traveling, playing cricket and chess are his hobbies and he likes to explore historical places.
Blog Author - Prathamesh Badadal
Prathamesh Badadal
Prathamesh is currently an CFD Support Engineer in the simulationHub team at CCTech. At CCTech he is keenly interested in learning the upcoming new technologies in the field of Computational Fluid Dynamics, Machine Learning. His areas of interest are Computational Fluid Dynamics, Numerical Methods, Heat Transfer and Fluid Mechanics. He holds a Master in Heat Power Engineering from Savitribai Phule Pune University. His hobbies are playing Chess and Badminton.
Blog Author - Prathamesh Badadal
Prathamesh Badadal
Prathamesh is currently an CFD Support Engineer in the simulationHub team at CCTech. At CCTech he is keenly interested in learning the upcoming new technologies in the field of Computational Fluid Dynamics, Machine Learning. His areas of interest are Computational Fluid Dynamics, Numerical Methods, Heat Transfer and Fluid Mechanics. He holds a Master in Heat Power Engineering from Savitribai Phule Pune University. His hobbies are playing Chess and Badminton.
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