서지주요정보
LU-ADI 법에 의한 2차원 비점성 압축성 유동의 해석 = Two-dimensional inviscid compressible flow simulations by using a LU-ADI method
서명 / 저자 LU-ADI 법에 의한 2차원 비점성 압축성 유동의 해석 = Two-dimensional inviscid compressible flow simulations by using a LU-ADI method / 황창전.
저자명 황창전 ; Hwang, Chang-Jeon
발행사항 [대전 : 한국과학기술원, 1991].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8002212

소장위치/청구기호

학술문화관(문화관) 보존서고

MAE 9115

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Two-dimensional unsteady compressible flows are studied numerically, especially for the case of interactions between the steady flow and a periodically perturbed compressible flow at transonic speed. A LU-ADI finite difference method is employed, which has the following features; LU(lower & upper) decomposition for the speed acceleration and flux vector splitting & flux limiter for the shock capturing. The numerical method is tested for the three basic flows with several different boundary conditions: a circular arc bump, two-dimensional shock tube and small perturbed wave propagations with & without the uniform flow. It turns out the method is appropriate to simulate the unsteady flows with low frequency motions including steady flows. Finally, two different types of flow, composed of small unsteady perturbations and main flow fields, are calculated. The first type calculation is carried out by imposing the small perturbations at the inflow boundary condition in the circular arc bump channel at transonic speed. A periodic motion in the flow field including the shock is clearly observed for the harmonic perturbations at the inflow boundary. However, the flow field is dispersed due to the nonlinear and the geometric effect. The second type calculation is carried out by generating the small perturbation(acoustic wave) owing to the vortex shedding from the half wedge with a back step inside the duct. The periodic vortex sheddings are observed but the acoustic wave propagation is not shown in the calculation.

서지기타정보

서지기타정보
청구기호 {MAE 9115
형태사항 [iii], 38 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Chang-Jeon Hwang
지도교수의 한글표기 : 이덕주
지도교수의 영문표기 : Duck-Joo Lee
학위논문 학위논문(석사) - 한국과학기술원 : 항공공학과,
서지주기 참고문헌 수록
주제 Unsteady flow (Aerodynamics)
Finite differences.
Vortex-motion.
Sound-waves.
압축성 유동. --과학기술용어시소러스
이차원 흐름. --과학기술용어시소러스
유한 차분법. --과학기술용어시소러스
와류. --과학기술용어시소러스
음파. --과학기술용어시소러스
Air flow.
QR CODE qr code