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Effect of Injection Angle on Artificial Cavitation Using the Design of Experiment Method 预览
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作者 M. Ghorbani Shahr-e-Babaki A. Jamali Keikha A. Behzad Mehr 《船舶与海洋工程学报:英文版》 CSCD 2017年第2期173-181,共9页
Using the supercavitation phenomenon is necessary to reach high velocities underwater. Supercavitation can be achieved in two ways: natural and artificial. In this article, the simulation of flows around a torpedo was... Using the supercavitation phenomenon is necessary to reach high velocities underwater. Supercavitation can be achieved in two ways: natural and artificial. In this article, the simulation of flows around a torpedo was studied naturally and artificially. The validity of simulation using theoretical and practical data in the natural and artificial phases was evaluated. Results showed that the simulations were consistent with the laboratory results. The results in different injection coefficient rates, injection angles, and cavitation numbers were studied. The obtained results showed the importance of cavitation number, injection rate coefficient, and injection angle in cavity shape. At the final level, determining the performance conditions using the Design of Experiment (DOE) method was emphasized, and the performance of cavitation number, injection rate coefficient, and injection angle in drag and lift coefficient was studied. The increase in injection angle in the low injection rate coefficient resulted in a diminished drag coefficient and that in the high injection rate coefficient resulted in an enhanced drag coefficient. 展开更多
关键词 INJECTION angle SUPERCAVITATION artificial CAVITATION TORPEDO design of experiment drag COEFFICIENT LIFT COEFFICIENT
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