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 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.

Abstract
 1. 서론
 2. 수치해석
  2.1 차분래티스볼츠만
  2.2 유동방정식도출
 3. 계산결과 및 고찰
  3.1 진동하는 각주로부터의 유동소음
  3.2 회전체로부터의 유동소음
 4. 결론
 참고문헌

• 김진구(충북도립대학 기계자동차과) | J. G. KIM