EXTENSION OF MULTI-DIMENSIONAL LIMITING PROCESS ONTO THREE-DIMENSIONAL UNSTRUCTURED GRIDS

The present paper deals with the continuous work of extending multi-dimensional limiting process (MLP), which has been quite successfully proposed on two- and three-dimensional structured grids, onto the unstructured grids. The basic idea of the present limiting strategy is to control the distribution of both cell-centered and cell-vertex physical properties to mimic a multi-dimensional nature of flow physics, which can be formulated as so called the MLP condition. The MLP condition can guarantee a high-order spatial accuracy without yielding spurious oscillations. Recently, MLP slope limiter was proposed based on the MUSCL-type reconstruction in two-dimensional case and it can be readily extended to three-dimensional case. Through various numerical analyses and extensive computations, it is observed that the proposed limiters are quite effective in controlling numerical oscillations and very accurate in capturing both discontinuous and continuous multi-dimensional flow features on 3-D tetrahedral grids.본 연구는 한국연구재단을 통해 교육과학기술부의 우주기초원천기술개발 사업(NSL, National Space Lab, 과제번호 20090091724), 2010년도 2단계 두뇌한국21사업, 국방과학연구소 장기기초 연구사업 및 항공우주신기술연구소의 지원으로 수행되었음.OAIID:oai:osos.snu.ac.kr:snu2010-01/104/0000004648/21SEQ:21PERF_CD:SNU2010-01EVAL_ITEM_CD:104USER_ID:0000004648ADJUST_YN:NEMP_ID:A001138DEPT_CD:446CITE_RATE:0FILENAME:다차원_공간_제한_기법의_3차원_비정렬_격자계로_확장.pdfDEPT_NM:기계항공공학부EMAIL:chongam@snu.ac.krCONFIRM: