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| The Simulation of Atmospheric Detached Shock Wave of Supersonic Multi-hole Porous Probe |
| ZHANG Yang-chun1,ZHOU Shu-dao1,2,YAO Tao1 |
1. College of Meteorology & Oceanography, National University of Defense Technology, Nanjing, Jiangsu 211101, China
2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, Jiangsu 210044, China |
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Abstract In order to study the change law of the shape and standoff distance of the shock wave for hemispherical porous probe under supersonic atmospheric conditions, when the Mach number changes. CFD method was used to simulate the atmospheric environment, and numerical simulation experiments were carried out in the range of 1.2～1.7 Mach number. Hyperbola was used to represent the detached shock wave, and the functional relationship between the curvature, the standoff distance, the directrix distance of the shock wave and the Mach number was fitted by the least square method, and the parametric equation of the detached shock wave curve was established. The parametric equation is compared with the simulation results and the empirical formula, and the results show that the parametric equation is in good agreement with the simulation results, and the accuracy is higher when the distance is closer to the sphere. The difference between the distance predicted by the parametric equation and the empirical formula does not exceed 5% of the sphere radius.
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Received: 02 December 2020
Published: 15 July 2021
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2021, Vol. 42 
