Simulation and Research on Flow-field of Butterfly Valve in Standard Variable Head Flow Device |
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| F. Lu, J. M. Zhang, Y. M. Shen |
- Abstract:
- For the butterfly flow-regulating valve commonly used in the variable head flow standard device, the threedimensional flow field in the valve body was simulated during the flow regulating process by CFD dynamic mesh technology. The flow field changes with cloud maps in the internal and downstream piping of the valve body under several operating conditions of 10°, 30°, 45°, 60°and 90°opening was proposed in the condition of constant water head. The simulation results also show that there are two opposite vortices in the flow field downstream of the valve body at 10° and 30° opening, and the valve opening has a nonlinear function relationship with the flow. Meanwhile, The flow control function of butterfly valve was presented to keep the flowrate constant under variable head conditions. Experiments were carried out on a variable head simulation device with an effective head of 3m and a pipe diameter of 150mm. Experiments show that the control function can be used to open-loop control the butterfly valve, and the control accuracy of flow fluctuation less than 1% can be obtained.
- Download:
- IMEKO-TC9-2019-025.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC9
- Event name:
- FLOMEKO 2019
- Title:
18th International Flow Measurement Conference 2019
- Place:
- Lisbon, PORTUGAL
- Time:
- 26 June 2019 - 28 June 2019