Large eddy simulations of bluff-body wakes on parallel computers

The objective of the present research was to investigate the applicability of large-eddy simulations to predict the characteristics of turbulent wakes of bluff bodies. The problem considered concerns turbulent flow over a square cylinder placed normal to a uniform free stream. The Reynolds number selected for the simulations is 21,400 where detailed experimental data are available. The computation times required for such simulations are quite large because of the fine grids and the large number of time steps that are necessary. Therefore, these calculations have been performed on massively parallel processing computers. The governing equations are approximated by a finite-volume discretization. Several alternate interpolation schemes, including a third-order (QUICK), a fifth-order, and a seventh-order upwinding-biased scheme, have been employed for convection terms. A data-parallel algorithm has been developed on the CM-5 machine, and its performance has been evaluated on various grid sizes in model flow problems and for different partition sizes.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Mechanical Science and Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Wang, Gang

Contributors dc:contributor

• Vanka, Surya Pratap

• Engineering, Mechanical
• Computer Science

Statement dc:rights

• Copyright 1996 Wang, Gang

Language dc:language

eng

Identifier

9780591199567
AAI9712474
(UMI)AAI9712474

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/22905