서지주요정보
Covariant 라플라스 방정식을 이용한 경계에 근사적으로 직교하는 삼차원 격자형성방법 개발 = Development of three-dimensional grid generation method for nearly orthogonal grids near boundaries using the covariant laplace equations
서명 / 저자 Covariant 라플라스 방정식을 이용한 경계에 근사적으로 직교하는 삼차원 격자형성방법 개발 = Development of three-dimensional grid generation method for nearly orthogonal grids near boundaries using the covariant laplace equations / 정희권.
저자명 정희권 ; Jeong, Hee-Kwon
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 비공개원문

소장정보

등록번호

8007194

소장위치/청구기호

학술문화관(문화관) 보존서고

DAE 97006

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A method of three-dimensional grid generation for general three-dimensional arbitrary shapes by using the covariant Laplace equation is presented. The method is based on the concept of decomposition of the global three-dimensional transformation into consecutive mappings of a quasi-conformal mapping and an auxiliary mapping to have linear and uncoupled equations. The linearization of the generating equations is implemented by introducing a preliminary step. This preliminary step corresponds to a quasi-conformal map and is based on the boundary element method(BEM). The boundary conditions must be specified in a manner consistent with the auxiliary domain to ensure that the resulting grid remains nearly orthogonal. So, the boundary element method is introduced to apply a proper boundary conditions and is used to determine the boundary point distributions. The present method can generate nearly orthogonal grids for arbitrary shapes without considering complex mathematical techniques. The proposed method is applied to several three-dimensional geometries to generate nearly orthogonal grid systems and shows good capability to generate orthogonal grids on the boundary. Lastly, the flowfield for a RAE wing-fuselarge is calculated with the generated grid to verify the present grid method. The compressible Euler equations are solved using a central-differenced finite volume scheme and the DADI(Diagonalized Alternating Direction Implicit) time integration method.

서지기타정보

서지기타정보
청구기호 {DAE 97006
형태사항 v, 98 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Hee-Kwon Jeong
지도교수의 한글표기 : 권장혁
지도교수의 영문표기 : Jang-Hyuk Kwon
학위논문 학위논문(박사) - 한국과학기술원 : 항공우주공학과,
서지주기 참고문헌 : p. 55-57
주제 격자형성
경계요소법
라플라스방정식
유한체적법
Grid generation
Boundary element method
Covariant laplace equation
FVM
QR CODE qr code