图书馆订阅: Guest
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)

ISSN Online: 2688-7231

ISBN Online: 978-1-56700-478-6

NUMERICAL INVESTIGATION OF TURBULENT FLOW PAST SQUARE BASED SURFACE MOUNTED PYRAMID

pages 2329-2334
DOI: 10.1615/IHMTC-2017.3250
Get accessGet access

摘要

Turbulent flow around a square based surface mounted pyramid has been investigated and hence a comparison study has been performed using standard k-ε model and LES model. Contours and characteristic plots of pressure, velocity and vorticity have been compared using both the models. Results obtained from LES model have proved to be inarguably more accurate for turbulent flow over a single pyramid. Finally, the numerical analysis has been conducted for flow over two pyramids arranged in a tandem using LES model. Results in terms of contours and plots have been analyzed for Reynolds number (Re) 2.5*104 and 5*104. Data related to geometry, boundary conditions and other flow governing parameters has been taken from Martinuzzi and Abu Omar [1]. Finite volume method is implemented along with SIMPLE algorithm so as to handle pressure-velocity decoupling. Smagorinsky-Lilly model has been used as the Subgrid-Scale model while using LES model where as standard k-ε model is used with wall function methods for near wall treatment. Computation has been performed on a three-dimensional unstructured mesh. The validation study conducted showed an excellent agreement with experimental results. In the present study, commercial package ANSYS has been used for the entire analysis.

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