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| Study on throttle performance of throttling orifice based on entropy analysis |
| Yuan Shihao, Lou Panlong, Lü Jianhao |
| Hangzhou Hangyang Group, Hangzhou, Zhejiang 310014, China |
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Abstract The structural characteristics of a V-shaped throttling orifice are analyzed to evaluate its throttle performance. In doing so, four performance indices are proposed, namely the slope of equivalent hydraulic diameter, dV2, ratio of equivalent throttling section areas, k, cavitation numbers, σ2A1in and σ2A1out at the smallest throttling section A2. Homogeneous design is introduced into the structural design of V-shaped throttling orifice, and then the values of four evaluation indices of 16 design cases are calculated. Entropy analysis is applied into the study on throttle performance of these orifices, and then the orifice structure is optimized to achieve the best throttle performance. Compared with the initial structure of the orifice, the optimized one has an improved throttle performance.
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Received: 12 May 2014
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