图书馆订阅: Guest
THMT-18. Turbulence Heat and Mass Transfer 9 Proceedings of the Ninth International Symposium On Turbulence Heat and Mass Transfer
July, 10-13, 2018, Rio de Janeiro, Brazil

DOI: 10.1615/THMT-18


ISBN Print: 978-1-56700-468-7

ISBN Online: 978-1-56700-467-0

ISSN Print: 2377-2816

DNS Study on Characteristics and Structures of Turbulent Heat Transfer in Thermally-Stratified Boundary Layer over 2D Hill

pages 795-802
DOI: 10.1615/THMT-18.840
Get accessGet access

摘要

The subject of this study is to reveal turbulent heat transfer phenomena in a thermally-stratified boundary layer over 2-dimensional (2D) hill, direct numerical simulation (DNS) is carried out. In this study, effects of both a ratio of hill height to boundary layer thickness and a thermal stratification are mainly explored, in which characteristic tendencies of recirculation region are observed in results of DNS with various thermal stratification and height of 2D hill. Thus, characteristics and structures of turbulent heat transfer phenomena in a thermally-stratified boundary layer over 2D hill are revealed in detail. Also, influences of turbulent state around top of the hill to the recirculation region are especially investigated and observed. In particular, the counter gradient diffusion phenomenon (CDP) occurs due to both hill shape and stable thermal stratification, but no influence of CDP to the recirculation region is found.

Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集 订购及政策 Begell House 联系我们 Language English 中文 Русский Português German French Spain