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Personal computer study of finite-difference methods for the transonic small disturbance equationCalculation of unsteady flow phenomena requires careful attention to the numerical treatment of the governing partial differential equations. The personal computer provides a convenient and useful tool for the development of meshes, algorithms, and boundary conditions needed to provide time accurate solution of these equations. The one-dimensional equation considered provides a suitable model for the study of wave propagation in the equations of transonic small disturbance potential flow. Numerical results for effects of mesh size, extent, and stretching, time step size, and choice of far-field boundary conditions are presented. Analysis of the discretized model problem supports these numerical results. Guidelines for suitable mesh and time step choices are given.
Document ID
19900006576
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Bland, Samuel R. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1989
Subject Category
Aerodynamics
Report/Patent Number
NASA-TM-102582
NAS 1.15:102582
Meeting Information
Meeting: International Congress of Fluid Mechanics
Location: Cairo
Country: Egypt
Start Date: January 2, 1990
End Date: January 4, 1990
Accession Number
90N15892
Funding Number(s)
PROJECT: RTOP 505-63-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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