혼합격자를 이용한 2차원 난류 유동장 해석 프로그램의 병렬화 = Parallelization of a Two-Dimensional Navier-Stokes Solver Using Hybrid Meshes

다국어 초록 (Multilingual Abstract)

A two-dimensional Navier-Stokes solver using hybrid meshes is parallelized with 3 domain decomposition method. The focus of this paper is placed on minimizing the amount of effort in parallelizing the serial version of the solver, and this is achieved by adding an additional layer of cells to each decomposed domain. Most subroutines of the serial solver are used without modification, and the information exchange- between neighboring domains is achieved using MPI(Message Passing Interface) library. Load balancing among the processors and scheduling of the message passing are implemented to reduce the overhead of parallelization, and the speed-up achieved by parallelization is measured on the transonic - invisicd and turbulent flow problems. The parallelization efficiencies of the explicit Runge-Kutta scheme and the implicit point-SGS scheme are compared and the effects of various factors on the results are also studied.

목차 (Table of Contents)

• Abstract
  
• 1. 서론
  
• 2. 수치해석 방법
  
• 3. 병렬처리 기법
  
• 4. 계산결과
  
• 5. 결론
  
• 후기
  
• 참고문헌