The effect of grid skewness on non-unified compact residual distribution methods for scalar advection diffusion problems

Aminnuddin, Hazim Fadli and Ismail, Farzad and Mohammed, Akmal Nizam and Abdullah, Kamil (2020) The effect of grid skewness on non-unified compact residual distribution methods for scalar advection diffusion problems. CFD Letters, 12 (3). pp. 58-65. ISSN 2180-1363

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Abstract

In this paper, the newly developed residual distribution (RD) method called the Flux- Difference approach is combined with the Galerkin method to solve the advectiondiffusion equation in separate (non-unified) manner. It is due to the incapability of variation grid skewness in finite volume. This Flux-Difference RD method maintains a compact stencil and the whole process of solving advection–diffusion do not require additional equations. In order to improve the order of accuracy losses by the classic RD schemes, the present scheme will be tested using non-unified manners. The numerical results show that the Flux-Difference RD method preserves second-order accuracy up to about skewness 0.4 but drops to about 1.5 orders accurate when grid skewness is 0.6.

Item Type:	Article
Uncontrolled Keywords:	Residual distribution; flux-difference; advection-diffusion; non-unified; grid skewness
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery > TJ241-254.7 Machine construction (General)
Divisions:	Faculty of Mechanical and Manufacturing Engineering > Department of Mechanical Engineering
Depositing User:	Miss Afiqah Faiqah Mohd Hafiz
Date Deposited:	30 Jan 2022 01:18
Last Modified:	30 Jan 2022 01:18
URI:	http://eprints.uthm.edu.my/id/eprint/6300

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