Gate Valve Parametric Study
Gate Valve Parametric Study
A parametric study is like a design of experiments that maps a certain change that as interconnected. It is defined as a process of superimposing changes in input to the corresponding output.
In our case, a parametric study is carried on a gate valve for different levels of Gate Disc lift positions & corresponding outlet mass flowrates.
Geometry:
Cad Model of Gate Valve is shown above. It consists of a gate disc that controls the amount of fluid passing & other sub-components like bonnet, spindle & handwheel.
Fluid Volume of Gate Valve is shown above.
Mesh Details:
No of Nodes: 46258
No of Elements: 228942
Boundary Conditions:
K-epsilon\'s realizable scalable wall functions have been used as a solver.
Cell Zone Conditions: Fluid used is Water
Pressure Inlet: 10 Pa
Pressure Outlet
In the report definition, the mass flow rate is monitored at the outlet.
Velocity contour is plotted in the midplane of the geometry.
Baseline Simulation:
This Simulation is carried for 10mm lift of the Gate Disc
Residual Plot:
Mass flow rate at the outlet:
Velocity Contour animation:
Parametric Study:
The lift of the gate disc is the input parameter(P1) & the corresponding Outlet mass flow rate is the output parameter(P2).
The lift of the gate disc can be seen for each case by changing the current option in the Table of Design Points.
Different lift of gate disc and the corresponding fluid volume change is shown below:
Gate Disc 10mm lift:
Input parameter (P1) & the corresponding outlet mass flowrate(P2) is shown in the table above.
Gate disc 10mm lift & the corresponding fluid volume change can be seen above.
Residual Plot for 10mm Gate disc lift is shown above.
Velocity Contour for 10mm lift of gate disc
Gate Disc 15mm lift:
Input parameter (P1) & the corresponding outlet mass flowrate(P2) is shown in the table above.
Gate disc 15mm lift & the corresponding fluid volume change can be seen above.
Residual Plot for 15mm Gate disc lift is shown above.
Velocity Contour for 15mm lift of gate disc
Gate Disc 20mm lift:
Input parameter (P1) & the corresponding outlet mass flowrate(P2) is shown in the table above.
Gate disc 20mm lift & the corresponding fluid volume change can be seen above.
Residual Plot for 20mm Gate disc lift is shown above. Convergence can be improved by refining the mesh.
Velocity Contour for 20mm lift of gate disc
Gate Disc 25mm lift:
Input parameter (P1) & the corresponding outlet mass flowrate(P2) is shown in the table above.
Gate disc 25mm lift & the corresponding fluid volume change can be seen above.
Residual Plot for 25mm Gate disc lift is shown above.
Velocity Contour for 25mm lift of gate disc
Gate Disc 30mm lift:
Input parameter (P1) & the corresponding outlet mass flowrate(P2) is shown in the table above.
Gate disc 30mm lift & the corresponding fluid volume change can be seen above.
Residual Plot for 30mm Gate disc lift is shown above. Convergence can be improved by refining the mesh.
Velocity Contour for 30mm lift of gate disc.
Comparison Table:
|
Name |
P1(mm) |
P2(kg/s) |
|
Design Point 0 |
10 |
-0.23883 |
|
Design Point 1 |
15 |
-0.29521 |
|
Design Point 2 |
20 |
-0.35736 |
|
Design Point 3 |
25 |
-0.421 |
|
Design point 4 |
30 |
-0.46524 |