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Challenge 9 – Parametric Study on Gate Valve Aim – To perform a parametric study on water passing through a gate valve by changing the valve opening from 10mm to 80mm and analysing the mass flow rate at the outlet in each case. Introduction to Gate Valve and its working principle – A gate valve's main…
Vedant Joshi
updated on 06 May 2021
Challenge 9 – Parametric Study on Gate Valve
Aim – To perform a parametric study on water passing through a gate valve by changing the valve opening from 10mm to 80mm and analysing the mass flow rate at the outlet in each case.
Introduction to Gate Valve and its working principle –
A gate valve's main components are body, seat, gate, stem, bonnet, and actuator. The primary operation mechanism is straightforward. Turning the handwheel rotates the stem, which moves the gate up or down via the threads. They require more than one 360° turn to fully open/close the valve. Lifting the gate from the path of the flow, the valve opens. Lowering the gate to its closed position seals the bore resulting in a full closure of the valve.
For a gate valve, the relationship between the gate's vertical travel and the flow rate is nonlinear, with the highest changes occurring near shutoff. When used to regulate flow, the relatively high velocity of the flow at partial opening results in gate and seat wear, which along with possible vibrations of the gate, shortens the valve's service life.
Solving and Modelling Approach –
Valve Opening
10mm
20mm
30mm
40mm
50mm
60mm
70mm
80mm
Meshing –
MESH SIZE AS PER VALVE OPENING -
10mm
20mm
30mm
40mm
50mm
60mm
70mm
80mm
Setting up the case in Ansys Setup –
Parametric Study settings –
Results and Findings –
Tables and charts –
Conclusions and inferences –
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