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[학술저널]

  • 학술저널

김형태(충남대학교) 최은지(충남대학교) 강경태(충남대학교) 윤현걸(국방과학연구소)

DOI : 10.3744/SNAK.2019.56.4.298

이 논문을 2019-09-19 에 이용했습니다. 저작권자 요청에 따라 무료로 제공되는 논문입니다. 로그인 후 이용하실 수 있습니다.

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초록

The evolution of the cavity and the variation of the drag for an underwater body with control fins are investigated through a numerical analysis of the steady cavitating turbulent flow. The continuity and the steady-state RANS equations are numerically solved using a mixture fluid model for calculating the multiphase turbulent flow of air, water and vapor together with the SST k-ω turbulence model. The method of volume of fluid is applied by the use of the Sauer’s cavitation model. Numerical solutions have been obtained for the cavity flow about an underwater body shaped like the Russian high-speed torpedo, Shkval. Results are presented for the cavity shape and the drag of the body under the influence of the gravity and the free surface. The evolution of the cavity with the body speed is discussed and the calculated cavity shapes are compared with the photographs of the cavity taken from an underwater launch experiment. Also the variation of the drag for a wide range of the body speed is investigated and analyzed in details.

목차

1. 서론
2. 수치해석 방법
3. 수치해석 결과
4. 결론
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