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Code for Multiblock CFD and Heat-Transfer ComputationsThe NASA Glenn Research Center General Multi-Block Navier-Stokes Convective Heat Transfer Code, Glenn-HT, has been used extensively to predict heat transfer and fluid flow for a variety of steady gas turbine engine problems. Recently, the Glenn-HT code has been completely rewritten in Fortran 90/95, a more object-oriented language that allows programmers to create code that is more modular and makes more efficient use of data structures. The new implementation takes full advantage of the capabilities of the Fortran 90/95 programming language. As a result, the Glenn-HT code now provides dynamic memory allocation, modular design, and unsteady flow capability. This allows for the heat-transfer analysis of a full turbine stage. The code has been demonstrated for an unsteady inflow condition, and gridding efforts have been initiated for a full turbine stage unsteady calculation. This analysis will be the first to simultaneously include the effects of rotation, blade interaction, film cooling, and tip clearance with recessed tip on turbine heat transfer and cooling performance. Future plans call for the application of the new Glenn-HT code to a range of gas turbine engine problems of current interest to the heat-transfer community. The new unsteady flow capability will allow researchers to predict the effect of unsteady flow phenomena upon the convective heat transfer of turbine blades and vanes. Work will also continue on the development of conjugate heat-transfer capability in the code, where simultaneous solution of convective and conductive heat-transfer domains is accomplished. Finally, advanced turbulence and fluid flow models and automatic gridding techniques are being developed that will be applied to the Glenn-HT code and solution process.
Document ID
20110013034
Acquisition Source
Glenn Research Center
Document Type
Other - NASA Tech Brief
External Source(s)
http://www.techbriefs.com/component/content/article/2205-doc-2874
Authors
Fabian, John C. (NASA Glenn Research Center Cleveland, OH, United States)
Heidmann, James D. (NASA Glenn Research Center Cleveland, OH, United States)
Lucci, Barbara L. (NASA Glenn Research Center Cleveland, OH, United States)
Ameri, Ali A. (Toledo Univ. OH, United States)
Rigby, David L. (QSS Group, Inc. Cleveland, OH, United States)
Steinthorsson, Erlendur (A and E Consulting, Inc. United States)
Date Acquired
August 25, 2013
Publication Date
September 1, 2006
Publication Information
Publication: NASA Tech Briefs, September 2006
Subject Category
Man/System Technology And Life Support
Report/Patent Number
LEW-17914-1
Distribution Limits
Public
Copyright
Public Use Permitted.

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IDRelationTitle20110013031Collected WorksNASA Tech Briefs, September 2006
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