| Related citation: | XING Yan-jiang,ZHANG Jia-zhong,WEI Ying-jie,WANG Cong,CAO Wei,WANG Bai-qiu.Study on hysteresis phenomenon in the acceleration phase of supercavitation vehicle[J].Journal of Harbin Institute Of Technology(New Series),2012,19(1):29-33.DOI:10.11916/j.issn.1005-9113.2012.01.006. |
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| Author Name | Affiliation | | XING Yan-jiang | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China | | ZHANG Jia-zhong | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China | | WEI Ying-jie | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China | | WANG Cong | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China | | CAO Wei | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China | | WANG Bai-qiu | School of Astronautics,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: |
| This paper aims to explore cavity shape variation regularity in the acceleration phase of supercavitating vehicle. According to the theory of Homogenous Equilibrium Flow,with Mixture Multiphase Model,by setting up the flow speed at the inlet boundary as a function of time,this study carried out the experiments for the supercavitation vehicle’s numeral model and obtained the variation regularity of cavity shape,the viscous drag coefficient and the cavity hysteresis time when the supercavitating vehicle was in the phase of acceleration. Results show that when the vehicle is in the phase of acceleration,at the same cavitation number,the cavity size decrease with the increase of acceleration. With the decrease of cavity number,the effect of acceleration on cavity shape is smaller,but the viscous drag increases along with the increase of acceleration. On the condition when the velocity reaches equality uniform status,the cavity hysteresis decreases as the acceleration becomes smaller. On the condition of the same acceleration,the cavity hysteresis time decreases as the velocity increases. |
| Key words: supercavitating vehicle hysteresis phenomenon acceleration cavity shape viscous drag |
| DOI：10.11916/j.issn.1005-9113.2012.01.006 |
| Clc Number:O352 |
| Fund: |
