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The development of a three-dimensional partially elliptic flow computer program for combustor researchA three dimensional, partially elliptic, computer program was developed. Without requiring three dimensional computer storage locations for all flow variables, the partially elliptic program is capable of predicting three dimensional combustor flow fields with large downstream effects. The program requires only slight increase of computer storage over the parabolic flow program from which it was developed. A finite difference formulation for a three dimensional, fully elliptic, turbulent, reacting, flow field was derived. Because of the negligible diffusion effects in the main flow direction in a supersonic combustor, the set of finite-difference equations can be reduced to a partially elliptic form. Only the pressure field was governed by an elliptic equation and requires three dimensional storage; all other dependent variables are governed by parabolic equations. A numerical procedure which combines a marching integration scheme with an iterative scheme for solving the elliptic pressure was adopted.
Document ID
19790005133
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Pan, Y. S. (Pittsburgh Energy Research Center Pittsburgh, PA, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1978
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-3057
Accession Number
79N13304
Funding Number(s)
CONTRACT_GRANT: NAS1-15046
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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