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논문 기본 정보

자료유형
학위논문
저자정보

김민규 (울산대학교, 울산대학교 대학원)

지도교수
안형택
발행연도
2014
저작권
울산대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (2)

초록· 키워드

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A new and efficient high-order fully coupled implicit scheme is presented to solve the incompressible flows. The finite volume method with artificial compressibility and cell-centered upwind scheme is applied on unstructured meshes. The proposed scheme is focused on increasing two performances. The first, direct application of convective and viscous Jacobian matrix instead of approximated spectral radius of flux Jacobian is used for proposed fully coupled implicit LU-SGS scheme to increase the performance of convergence regardless of CFL number and time step. The second, it utilizes an efficient quadratic reconstruction algorithm to obtain the third-order accurate solution based on recursive operation of least-squares procedure to increase the performance of accuracy. Flow simulations and results of the proposed method using unstructured meshes for internal and external flow in two dimensions demonstrate its performances of accuracy and efficiency with easy grid generation using unstructured meshes.

목차

1. Introduction
2. Governing Equations and Spatial Discretization
3. Application of Implicit LU-SGS in Time Integration
4. Reconstruction-Based High-Order FVM
5. Numerical Results
6. Conclusions and Future Work

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