TY - CONF
T1 - DNS of passive scalar field with mean gradient in fractal-generated turbulence
AU - Suzuki, Hiroki
AU - Nagata, Kouji
AU - Sakai, Yasuhiko
AU - Hayase, Toshiyuki
AU - Kubo, Takashi
N1 - Funding Information:
The authors thank Professor J. Christos Vassilicos in Imperial College London for valuable comments to this study. The simulations are carried out using the supercomputer NEC SX-8 of the Advanced Fluid Information, Research Center Institute of Fluid Science, Tohoku University. The part of this study is supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology through Grants-in-Aid (Nos. 18686015 and 20008010).
Publisher Copyright:
© 2009 TSFP4 Symposium. All Rights Reserved.
PY - 2009
Y1 - 2009
N2 - Turbulent flow field and passive scalar field in the spatially developing grid-generated turbulence are investigated by means of the direct numerical simulation (DNS). Two types of grids are numerically constructed using a immersed boundary method: the one is a classical biplane square grid and the other is a fractal grid which was firstly used in a wind tunnel by Hurst and Vassilicos (2007) and Seoud and Vassilicos (2007). Two types of passive scalar fields are calculated: the one is a difiusion of a passive scalar with a constant mean gradient and the other is a scalar mixing layer. To ensure the numerical accuracy, fully conservative high order accurate finite difierent schemes for full staggerd grid system are used. Fundermental flow and scalar fields are presented in this paper.
AB - Turbulent flow field and passive scalar field in the spatially developing grid-generated turbulence are investigated by means of the direct numerical simulation (DNS). Two types of grids are numerically constructed using a immersed boundary method: the one is a classical biplane square grid and the other is a fractal grid which was firstly used in a wind tunnel by Hurst and Vassilicos (2007) and Seoud and Vassilicos (2007). Two types of passive scalar fields are calculated: the one is a difiusion of a passive scalar with a constant mean gradient and the other is a scalar mixing layer. To ensure the numerical accuracy, fully conservative high order accurate finite difierent schemes for full staggerd grid system are used. Fundermental flow and scalar fields are presented in this paper.
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M3 - Paper
AN - SCOPUS:79551592997
SP - 55
EP - 60
T2 - 6th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2009
Y2 - 22 June 2009 through 24 June 2009
ER -