Gate Valve Parametric Analysis

Introduction:

A gate valve, also called sluice valve, is a valve used to isolate the flow in pipeline. They are controlled either by clockwise rotation to close (CTC) or clockwise to open (CTO) rotating stem. When operating the valve the gate moves up and down on the threaded stem. It is preferred as it does not restrict the flow when completely open. They are preferably used in large diameter pipes due to simple construction.

In the current problem, we will doing a parametric study on gate valve to check the variation in mass flow rate due to change in valve opening height.

Meshing:

Size of element is kept 10mm for each case.

Case Setup:

Gravity= 9.81 in –ve z direction

Solver= steady state, pressure based, k-e model with realizable scaled wall function is used.

Fluid= water

Inlet= pressure inlet, 10 Pa

Case 1:

Lift adjustment 5 mm

Animation for 5 mm lift

Case 2:

20 mm lift

Animation for 20 mm lift

Case 3:

30 mm lift

Animation for 30 mm

Case 4:

40 mm lift

Animation for 40 mm

Case 5:

50 mm lift

Animation for 50 mm

Mass Flow rate:

Lift Mass flow rate (kg/s)

5 mm 0.078

20 mm 0.238

30 mm 0.366

40 mm 0.4529

50 mm 0.570