http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이상유동에 대한 ALE Godunov법을 이용한 구대칭 수중폭발 해석
신상묵(S.M. Shin),김인철(I.C. Kim),김용직(Y.J. Kim) 한국전산유체공학회 2006 한국전산유체공학회지 Vol.11 No.1
A code is developed to analyze a spherically symmetric underwater explosion. The arbitrary Lagrangian-Eulerian(ALE) Godunov scheme for two-phase flow is used to calculate numerical fluxes through moving control surfaces. For detonation gas of TNT and liquid water, the Jones-Wilkins-Lee(JWL) equation of states and the isentropic Tait relation are used respectively. It is suggested to use the Godunov variable to estimate the velocity of a material interface. The code is validated through comparisons with other results on the gas-water shock tube problem. It is shown that the code can handle generation of discontinuity and recovering of continuity in the normal velocity near the material interface during shock waves interact with the material interface. The developed code is applied to analyze a spherically symmetric underwater explosion. Repeated transmissions of shock waves are clearly captured The calculated period and maximum radius of detonation gas bubble show good agreements with experimental and other numerical results.
정택상,송명준,김용직,이희동 충남대학교 의과대학 지역사회의학연구소 1980 충남의대잡지 Vol.7 No.2
We operated on a patient with ovarian humor who had taken surgery for stomach cancer 17 months before. Gross finding of the specimen was bilateral solid ovarian tumor, the left-goose egg sized ovoid shape with smooth surface and the right -double fist sized kidney shape with nodular surface. Microscopic examination revealed typical Krukenberg tumor showing similar cellular pattern noted in the stomach.