Title

Numerical Simulation for Natural Convection in Vertical Channels

Document Type

Article

Publication Date

8-2009

Publication Title

International Journal of Heat and Mass Transfer

Volume

52

Issue

17-18

First page number:

4095

Last page number:

4102

Abstract

The investigation of laminar natural convection in vertical obstructed channels is conducted using an h-adaptive finite element 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) in both smooth and obstructed channels.

Keywords

H-Adaptive finite element method; Heat – Convection; Natural; Laminar flow; Natural convection; Vertical channel

Disciplines

Energy Systems | Fluid Dynamics | Heat Transfer, Combustion | 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.

Identifier

DOI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.03.045

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