スガ　カズヒコ   Kazuhiko Suga   須賀　一彦    所属   追手門学院大学  理工学部 機械工学科    職種   教授
言語種別	英語
発行・発表の年月	2001/02
形態種別	外国学術誌（その他）
査読	査読あり
標題	Towards the development of a Reynolds-averaged algebraic turbulent scalar-flux model
執筆形態	共著・編著（代表編著を除く）
掲載誌名	INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
掲載区分	国外
出版社・発行元	ELSEVIER SCIENCE INC
巻・号・頁	22(1),pp.19-29
担当区分	最終著者,責任著者
著者・共著者	K Abe,K Suga
概要	In order to derive a possible direction for developing Reynolds-averaged algebraic turbulent scalar-flux models, a priori explorations are attempted by processing the LES data presently performed for channel flows under several flow-boundary conditions including shear-free boundaries. The present calibration has elucidated that the turbulent scalar-flux vectors obtainable from the simple generalized gradient-diffusion hypothesis (GGDH) hardly align with the simulation results in wall-shear flows at Pr greater than or equal to 0.71. However, the GGDH form returns a quite reasonable approximation in shear-free flow regions and/or lower Pr fluid cases. In the former flow cases, it has been found that an introduction of quadratic products of the Reynolds-stress tensor into the gradient diffusion model may improve the predictive performance. (C) 2001 Elsevier Science Inc. All rights reserved.
DOI	10.1016/S0142-727X(00)00062-X
ISSN	0142-727X
Put Code(ORCID)	41807916
PermalinkURL	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035241741&partnerID=MN8TOARS
researchmap用URL	http://orcid.org/0000-0001-9313-1816