한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2004년도 춘계 학술대회논문집
- /
- Pages.113-118
- /
- 2004
차분격자볼츠만법에 의한 저Mach수 영역 edge tone의 유체해석
Fluid analysis of edge Tones at low Mach number using the finite difference lattice Boltzmann method
초록
This paper presents a two-dimensional edge tone to predict the frequency characteristics of the discrete oscillations of a jet-edge feedback cycle by the finite difference lattice Boltzmann method (FDLBM). We use a new lattice BGK compressible fluid model that has an additional term and allow larger time increment comparing the conventional FDLBM, and also use a boundary fitted coordinates. The jet is chosen long enough in order to guarantee the parabolic velocity profile of the jet at the outlet, and the edge consists of a wedge with an angle of