Abstract
In this paper, ANSYS Fluent is used to simulate the three-dimensional flow of the ball valve under different pressure conditions. The flow field torque, speed and pressure distribution are obtained. By normalizing the mass flow and torque, a relationship formula between the flow coefficient and torque that varies with the opening degree is constructed. The problem that it is difficult to obtain the flow coefficient and torque coefficient of the ball valve is solved. The results show that the data after the normalization process basically coincide, indicating that the results have a high degree of confidence.
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