CAVITATION
Case study: 8” double offset butterfly valve
In this case study of an 8” double offset butterfly valve, the pressure field correction approach was used to calculate the F L for each valve opening from 20 ° to 90 °. The resulting F L values are presented below. The F L vs. valve opening plot shows the typical pattern observed for a double offset butterfly valve, demonstrating the method’ s effectiveness in capturing expected performance trends.
Summary
The proposed pressure field correction method offers significant advantages in time efficiency, enabling quick estimation of F L with accuracy within 10 % of conventional multiphase methods. This approach allows for fast design iteration comparisons, making it ideal for valve design optimization. However, detailed multiphase flow simulations are required for the final design to obtain accurate results. A key limitation of the proposed method is that the contours obtained do not accurately represent actual choked flow. While the F L values are quickly
Case study ball valve
Case study double offset butterfly valve
predicted, the method may not capture all complexities of cavitation. Despite its promising results in the orifice and other
case studies presented, the method requires further validation across various valve types. https:// www. australianpipelinevalve. com. au / sales @ australianpipelinevalve. com. au