Calculation of axisymmetric transonic small perturbation equation using conservative scheme

Sinha, UN and Sarasamma, VR (1984) Calculation of axisymmetric transonic small perturbation equation using conservative scheme. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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Abstract

Transonic flows past axisymmetrical bodies have been computed using Conservative difference schemes. Comparison of calculations with available experimental results show that in many cases the present conservative calculations are closer to experimental results. This finding is contrary to the pouplar opinion that nonconservative schemes are uniformly superior to the conservative schemes regarding experimental agreement. As available accounts on conservative differencing and artificial viscosity are rather terse, an expository account ofthese has been presented in the report. In particular, practical details of implementing conservative schemes for solving TSP equation have been given. It may be mentioned that because of its discrete nature conservative differencing is delicate and consequently, given a finite difference discretisation the work that needs to be done to decide whether the given differencing is conservative or not has been given in detail. Role of artificial viscosity in admitting compression shocks has been discussed and a way of obtaining such a scheme is given with all the details.

Item Type:	Monograph (Technical Report)
Uncontrolled Keywords:	Artificial viscosity;Navier stokes equation;Euler equation
Subjects:	ENGINEERING > Fluid Mechanics and Thermodynamics
Depositing User:	M/S ICAST NAL
Date Deposited:	13 Sep 2006
Last Modified:	24 May 2010 04:20
URI:	http://nal-ir.nal.res.in/id/eprint/2720

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