An Adaptive Finite Element Model for Simulating Natural Convective Effects of Multiple Obstructions
Document Type
Conference Proceeding
Publication Date
11-11-2007
Publication Title
ASME International Mechanical Engineering Congress and Exposition
Publisher
American Society of Mechanical Engineers
First page number:
139
Last page number:
145
Abstract
The investigation of laminar natural convection in vertical channels with multiple obstructions on opposite walls is conducted using an h-adaptive FEM algorithm. The adaptive model uses an L2 norm based a posteriori error estimator with a semi-implicit, time-stepping projection technique. The advection terms are treated using an explicit Adams Bashforth method while the diffusion terms are advanced by an implicit Euler scheme. By using the adaptive algorithm, mesh independent studies can be avoided. Results are obtained for thermal and flow patterns including average Nusselt numbers for different parameters (Rayleigh number, aspect ratio and locations of obstructions).
Keywords
Finite element method; Finite element model; Heat – Convection; Natural; Laminar flow
Disciplines
Aerodynamics and Fluid Mechanics | Fluid Dynamics | Mechanical Engineering
Language
English
Permissions
Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.
Repository Citation
Wang, X.,
Pepper, D. W.
(2007).
An Adaptive Finite Element Model for Simulating Natural Convective Effects of Multiple Obstructions.
ASME International Mechanical Engineering Congress and Exposition
139-145.
American Society of Mechanical Engineers.
Comments
From: ASME 2007 International Mechanical Engineering Congress and Exposition
Seattle, Washington, USA, November 11–15, 2007