물과 미래 (Water for future)

한국수자원학회 (Korea Water Resources Association)
권호 표지

이차원밀도장에서의 유동을 해석하기 위한 수치모델의 개발

A Numerical K-e Two-Equation Model for Investigating the Hydrodynamics of Flow in Two-Dimensional Density Fields

  • 허재영 (정회원, 대전대학교 토목공학과)
  • 발행 : 1993.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

2차원 표층밀도분류의 내부흐름의 구조를 동역학적으로 구명하기 위해서는 수평방향의 운동방정식과 더불어, 근사되지 않은 완전한 연직방향 운동방정식에 의해 유체의 운동을 계산해야할 필요가 있다. 본 연구에서는 정수압근사를 도입하지 않은 기초방정식을 갖는 k-e 모델을 개발하여 정수압근사를 도입한 허재영등의 연구(1991)에서 얻어진 결과 및 중십(1984)의 실험결과와 비교하여 표층밀도분류의 전개과정에 있어서 연직방향 가속도 및 그 영향을 정량적으로 평가하였다.

To investigate the structure of internal flow hydrodynamically, the complete vertical equation of motion should be assembled into the model. In the present study a numerical simulation model not hydrodynamically approximated is established. From the comparison of the predicted results with the computed results from k-$ two equation turbulence model by Huh et. al.(1991)and the experimental data by Nakatsuji(1984), the vertical acceleration and its effects on the development of buoyant surface jets are evaluated quantitatively.

키워드

참고문헌

  1. 韓國海岸 海洋工學會誌 v.3 no.2 二次元 表層放流 密度噴流의 k-ε모델에 의한 數置解析 許再寧;崔漢起;姜周復
  2. 大阪大學工學 博士學位論文 表層密度噴流の混合機構と擴がりに關する基礎的硏究 중십벽이
  3. Turbulence Models and Their Application in Hydraulics-a State-of-the-Art Review Wolfgang, Rodi
  4. Computer Methods in Applied Mech. and Engrg. v.3 The Numerical Computation of Turbulent Flows Launder,B.P.;Spalding,D.B.
  5. 2nd Symposium on Turbulent Shear Flows Influence of Buoyancy and Rotation on Equations for the Turbulent Length Scale Rodi,W.
  6. Pap. Phys. Oceanogr. Meteorol. v.3 no.3 The Layer of Frictional Influence in Wind and Ocean Currents Rossby,C.G.;Montgomery,R.B.
  7. J. Marine Research v.7 Notes on a Theory of the Thermocline Munk,W.H.;Anderson,E.R.
  8. Quart. J. R. Met. Soc. v.96 Profile Relationships : the Log-Linear Range and Extension to Strong Stability Webb,E.K.
  9. 大氣下層における亂流輸送過程に及ぼす浮力效果,國立公害硏究報告 no.17 植田洋匡;光本茂記;小森悟;小川靖;奧田典夫
  10. J. Atmospheric Sciences v.35 Heat and Momentum Transfers under Strong Stability in the Atmospheric Surface Layer Kondo,J.;Kanechika,O.;Yasuda,N.
  11. Proc. Institute of Civil Engineers A Note on the Determination of Vertical Turbulent Transport Coefficients in a Partially Mixed Estuary West,J.R.;Knight,D.W.;Shiono,K.
  12. 大阪大學工學博士學位論文 河川プル-ムの動力學に關する硏究 許再寧
  13. Intl. J. Heat Mass Transfer v.15 A Calculation Procedure for Heat, Mass and Momentum Transfer in Three-Dimensional Parabolic Flows Patanker,S.V.;Spalding,D.B.
  14. Intl. Sympo. on Buoyant Flows A Numerical Study of the Internal Hydraulic Jump McGuirk,J.J.;Papadimitriou,C.
  15. 土木學會第33回水理講演會論文集 亂流モデルの成層セん斷流への週用 室田明;中 啓二;藤崎豊
  16. J. Fluid Mechanics v.138 Turbulent Gravity-Stratified Shear Flows Chu,V.H.;Baddour,D.B.