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Determining the Coefficient of Hydrodynamic Torque Using CFD
Posted Thu June 03, 2021 @02:42PM
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Application In quarter-turn valves, torque is the turning effort required to rotate the valve’s closure member or hold it in position. Knowing the valve torque is essential in actuator sizing.

The simulationHub team has written an article on this topic in the recently published Valve World magazine.


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Major components of total shaft torque include seating, bearing, packing frictional torque and flow-induced hydrodynamic torque.

Predicting the operating torque using traditional flow loop testing can provide limited insights to the valve designer. However, by using Computational Fluid Dynamics (CFD), the dynamic torque can be calculated and malfunctions or short-comings in their design would be identified before the valve has been manufactured. Advancement in upcoming CFD technology such as autonomous CFD using artificial intelligence and availability of high computational resources will revolutionize the valve design procedure.

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