An improved form of the artificial diffusion parameter-X

Srinivas, K and Gururaja, J (1979) An improved form of the artificial diffusion parameter-X. Journal of Computational Physics, 31. pp. 289-292. ISSN 0021-9991

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Abstract

Artificial diffusion mechanisms used to damp post-shock oscillations or to stabilize the computations contain a factor chi which determines the amount of diffusion provided. This paper suggests an improved procedure which consists of (1) varying chi from point to point depending on the local Courant number and (2) employing a value of local chi sub i which is determined from a monotonicity analysis. Results obtained by employing a locally dependent value of chi are compared with those for a global value of chi

Item Type: Article
Additional Information: Copyright for this article belongs to John Wiley amp; Sons, Inc
Uncontrolled Keywords: Gas flow;Gaseous diffusion;Numerical stability;Shock tubes;Shock wave propagation;Diffusion theory;Error analysis;Truncation errors
Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
Depositing User: Users 11 not found.
Date Deposited: 13 Jun 2006
Last Modified: 24 May 2010 04:12
URI: http://nal-ir.nal.res.in/id/eprint/1579

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