F.A.M.을 이용한 공동 내부의 유동해석

Analysis of Flow Field in Cavity Using Finite Analytic Method

  • 박명규 (한국해양대학교 선박공학과) ;
  • 정정환 (부산대학교 조선공학과) ;
  • 김동진 (현대선박 해양연구소)
  • 발행 : 1991.08.01

초록

In the present study, Navier-Stokes equation is numerically solved by use of a Finite analytic method to obtain the 2-dimensional flow field in the square cavity. The basic idea of F.A.M. is the incorporation of local analytic solutions in the numerical solution of linear or non-linear partial differential equations. In the F.A.M., the total problem is subdivided into a number of all elements. The local analytic solution is obtained for the small element in which the governing equation, if non-linear, to be linearized. The local analytic solutions are then expressed in algebraic form and are overlapped to cover the entire region of the problem. The assembly of these local analytic solutions, which still preserve the overall nonlinearity of the governing equations, results in a system of linear algebraic equations. The system of algebraic equations is then solved to provide the numerical solutions of the total problem. The computed flow field shows the same characteristics to physical concept of flow phenomena.

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