| MEASUREMENTS OF ICE-FORMING RATES PRODUCED BY SUPERSONIC FLOW AND INVESTIGATION OF MECHANISMS OF ICE CRYSTAL GENERATION |
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| 作者姓名： | 黄世鸿 李如祥 钱昌国 |
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| 作者单位： | Department of Atmospheric Sciences Nan jing University，Nanjing 210008，Department of Atmospheric Sciences，Nan iing University，Nanjing 210008，Institute of Acoustics，Nanjing University，Nanjing 210008 |
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| 基金项目： | This project was supported by National Natural Science Foundation of China. |
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| 摘 要： | The ice forming rates p_i produced by supersonic flow have been measured in supercooled fog suspended in a coldchamber at temperatures of 0 to-12℃.It has been shown that the ice-forming rates are 10~(11)to 10~(12)crystals per gramof air at Mach numbers of 1.1 to 1.84 and total pressures below 6 atm,and that the ice-forming rates slowly increasewith increasing Mach numbers and total pressures and with decreasing ambient temperatures.These results aretheoretically consistent with the rules for expansion in supersonic flow.In review of mechanisms of ice crystal generation,authors propose that the homogeneous nucleation-freezing(condensation-freezing)of water vapor in supersonic flow be the dominant mechanism.In our opinion,supersonic flow,for artificial precipitation,could be expected to provide an economical,non-polluting and convenient technology,andsuitable for the long-distance operation.The data obtained from our experiments indicate that it is feasible to develop anew technique for weather modification.
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MEASUREMENTS OF ICE-FORMING RATES PRODUCED BY SUPERSONIC FLOW AND INVESTIGATION OF MECHANISMS OF ICE CRYSTAL GENERATION |
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| Huang Shihong Li Ruxiang.MEASUREMENTS OF ICE-FORMING RATES PRODUCED BY SUPERSONIC FLOW AND INVESTIGATION OF MECHANISMS OF ICE CRYSTAL GENERATION[J].Acta Meteorologica Sinica,1993(3). |
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| Authors: | Huang Shihong Li Ruxiang |
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| Affiliation: | Huang Shihong Li Ruxiang Department of Atmospheric Sciences,Nanjing University,Nanjing 210008 Qian Changguo Institute of Acoustics,Nanjing University,Nanjing 210008 |
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| Abstract: | |
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| Keywords: | ice-forming rate supersonic flow ice crystal generation mechanism |
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