Gate Valve Parametric Study by using ANSYS Fluent

Introduction:

                      A gate valve, also known as a sluice valve, is a valve that opens by lifting a barrier out of the path of the fluid. Gate valves require very little space along the pipe axis and hardly restrict the flow of fluid when the gate is fully opened. In this challenge, we have to perform a parametric study on the gate valve simulation by setting 5 different initial conditions of the model by lifting the valve to analyzing the mass flow rate of the outlet.

The geometry of the gate valve:

             The above figure shows the gate valve is used to regulate the flow of the fluid by using the valve, this can operate by the spindle manually in this software we use the move tool to move as shown the below.

            Volume extract command is used to extract the fluid volume of the present inside the cylinder and the pull tool is used to enlarge this extracted volume up to 800 mm both sides of the object. 

Mesh:

Mesh details:

                     Sl.No:               Lift in MM               Elements           Nodes

                      1.                         10                     137156            29059

                      2.                         20                     136280            28740

                      3.                         30                     135816            28697

                      4.                         40                     134691            28496

                      5.                         50                     134165            28414

Cut section:

Boundary condition:

Inlet pressure is applied is 10 Pa

Outlet pressure is 0 Pa

Material:

Water is used

Density: 998.2 Kg/m^3

Viscosity:0.001003 kg/M-S

Simulation:

Type of simulation is used is steady-state

Type of model is used k-epsilon with Realizable and Scalable wall function

The solution method is pressure-velocity coupling

Gravity is applied to -9.81 m/s^2 in Z-axis

    The above details are applied to Gate valve simulation to analysis simulation of every 10 mm lift of the gate valve.

Case 1:Gate Valve lift with 10 mm lift

Residuals:

Mass flow rate:

Animation of velocity:

Case-2: Gate Valve lift with 20 mm lift

Velocity:

Residuals:

Mass flow rate:

Animation:

Case-3: Gate Valve lift with 30 mm

Velocity:

Residuals:

Mass flow rate:

Animation of velocity:

Case-4: Gate Valve lift with 40 mm

Velocity:

Residuals:

Mass flow rate:

Animation:

Case-5: Gate Valve lift with 50 mm

Velocity:

Residuals:

Mass flow rate:

Animation:

             The output mass flow rate for each of the designs is point record and analyzed. These valves are shown in the below table.  

Results table:

                Sl. No.:                 Lift in MM                Flow rate in Kg/s

                  1.                          10                            0.1492

                  2.                          20                            0.2356

                  3.                          30                            0.3602

                  4.                          40                            0.4852

                  5.                          50                                           

Conclusion:

1. In this process, we conclude the when we increase the lift of the valve mass flow rate is also increases.