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Y. Gaffari Motlagh(유세프 카퍼리 모트랩),H. T. Ahn(안형택) 한국전산유체공학회 2010 한국전산유체공학회 학술대회논문집 Vol.2010 No.11
We present an Isogeometric variational multiscal residual-based method to solve laminar and turbulent concentric annular pipe flow. Isogeometric analysis is utilized for higher order approximation of the solution using B-spline basis functions. We first consider laminar flow and employ linear, quadratic and cubic discretizations that are C0-continuous, C1 -continuous and C2-continuous across element boundaries respectively. Next, we apply our approach to the turbulent concentric annular pipe flow. To validate our results on the turbulent flow we compare them with the available DNS data. The ability of Non-Uniform Rational B-Splines (NURBS) to exactly represent curved geometries makes NURBS- based isogeometric analysis attractive for application curved channel. Also, the curvature effect on the flow characteristics is studied in this work.