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유동망 시스템 해석을 위한 경계처리에 대한 보존형 유한체적법
CONSERVATIVE FINITE VOLUME METHOD ON BOUNDARY TREATMENTS FOR FLOW NETWORK SYSTEM ANALYSES

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Authors
홍석우; 김종암
Issue Date
2009-03
Publisher
한국전산유체공학회
Citation
한국전산유체공학회지, Vol.14 No.1, pp. 35-44
Keywords
공학유동망 시스템Flow Network System유한체적법Finite Volume Method경계처리Boundary Treatment정션결합Junction Coupling유령정션법Ghost Junction Method직접변환법Direct Transform Method
Abstract
To adequately analyze flows in pipe or duct network system, traditional node-based junction coupling methods require the junction loss which is specified by empirical or analytic correlations. In this paper, a new finite volume (unction coupling method using a ghost junction cell is developed by considering the interchange of linear momentum as well as the important wall-effect at junction without requiring any correlation on the junction loss. Also, boundary treatment is modified to preserve the stagnation enthalpy across boundaries, such as pipe-end and the interface between junction and branch. Also, the computational accuracy and efficiency of the Godunov-type finite volume schemes are investigated by tracing the total mechanical energy of rapid transients due to sudden closure of valve at downstream end.
ISSN
1598-6071
Language
Korean
URI
https://hdl.handle.net/10371/82482
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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