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| Orthogonal experimental on effect of geometrical parameters on self-excited inspiration pulsed jet nozzle performance |
| GAO Chuanchang1, HUANG Dan1, MA Jianjiao2, WANG Mengfei1, TANG Linjun1 |
| 1.School of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450045, China; 2.Tianjin Water Xinhua Engineering Planning and Design Co. Ltd., Tianjin 300220, China |
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Abstract In order to determine the geometrical parameters of the self-excited pulsed jet nozzle and the significance and importance of the order that their interactions affect its performance. The experiment on the inspiratory performamce and impact property of the self-excited inspiration pulsed jet nozzle was conducted by the orthogonal experiment method, and the nozzle area ratio, relative oscillation cavity area, relative cavity length and the sensitivity of their interactions to the inspiratory performance and impact property of the device were anedyzed by range analysis and variance analysis. The results show that the geometrical parameters that affect the inspiratory performance in descending order are: relative cavity length, relative oscillation cavity area, the interaction between relative oscillation cavity area and relative cavity length, the interaction between nozzle area ratio and relative oscillation cavity area, nozzle area ratio. The geometrical parameters that affect the impact property in descending order are: nozzle area ratio, relative oscillation cavity area, the interaction between of relative oscillation cavity area and relative cavity lengthis, relative cavity length among them, the former two contribute is much greater the nozzle impact property than the latter two to verifying tests confirmed the conclusions of orthogonal experiment.
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Received: 14 January 2016
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