ALE 모델의 래티스볼츠만 스킴에의 적용

• 영문명: An Application of ALE Model to Lattice Boltzmann Scheme - Analysis of F1ow-induced Noise Generated from Rotating Elliptic Cylinder -
• 발행기관: 한국항해항만학회
• 저자명: 최종웅(J.W Choi) 강호근(H.K. Kang) 안수환(S.W. Ahn) 김정환(J.W. Kim)
• 간행물 정보: 『한국항해항만학회 학술대회논문집』2008년도 공동학술대회 지구환경변화와 해양산업의 전망 논문집, 337~338쪽, 전체 2쪽
• 주제분류: 공학 > 해양공학
• 파일형태: PDF
• 발행일자: 2008.06.30

영문 초록

Numerical solutions are presented for compressible fluid flow past a rotating elliptic cylinder in a medium at rest at infinity. Flowfields and acoustic waves emitted from rotating elliptic cylinder are directly simulated by the lattice Boltzmann method formulated by the arbitrary Lagrangian Eulerian scheme. The flowfield is almost periodic after the calculation fully developed and studied by means of streamlines and equi-vorticity lines and by means of drag, lift and moment coefficients. The numerical analysis produce typical flows such that the large vortexes appear at the outside of the elliptic cylinder, and move slowly to the same direction as the cylinder’s rotation. The positive and negative vorticity is alternately occurred at the edge by those large vortexes. The acoustic waves propagate synchronizing with the rotation and increase with M3.5 of rotational speed of elliptic cylinder.

목차

Abstract

1. 서론

2. 수치해석

3. 계산결과 및 고찰

4. 결론

참고문헌

키워드

유동소음 회전타원체 Lattice Boltzmann method(LBM) Flow-induced noise Arbitrary Lagrangian Eulerian scheme(ALE) Rotational elliptic cylinder