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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Daniel, J. Dorney John, R. Schwab |
| Copyright Year | 1995 |
| Abstract | Experimental data taken from gas turbine combustors indicate that the flow exiting the combustor can contain both circumferential and radial temperature gradients. A significant amount of research recently has been devoted to studying turbine flows with inlet temperature gradients, but no total pressure gradients. Less attention has been given to flows containing both temperature and total pressure gradients at the inlet. The significance of the total pressure gradients is that the secondary flows and the temperature redistribution process in the vane blade row can be significantly altered. Experimental data previously obtained in a single-stage turbine with inlet total temperature and total pressure gradients indicated a redistribution of the warmer fluid to the pressure surface of the airfoils, and a severe underturning of the flow at the exit of the stage. In a concurrent numerical simulation, a steady, inviscid, three-dimensional flow analysis was able to capture the redistribution process, but not the exit flow angle distribution. In the current research program, a series of unsteady two- and three-dimensional Navier-Stokes simulations have been performed to study the redistribution of the radial temperature profile in the turbine stage. The three-dimensional analysis predicts both the temperature redistribution and the flow underturning observed in the experiments. |
| Sponsorship | International Gas Turbine Institute |
| File Format | |
| ISBN | 9780791878781 |
| DOI | 10.1115/95-GT-178 |
| Volume Number | Volume 1: Turbomachinery |
| Conference Proceedings | ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition |
| Language | English |
| Publisher Date | 1995-06-05 |
| Publisher Place | Houston, Texas, USA |
| Access Restriction | Open |
| Subject Keyword | Temperature Navier-stokes equations Computer simulation Blades Airfoils Temperature profiles Pressure gradient Flow (dynamics) Pressure Temperature gradient Fluids Gas turbines Combustion chambers Turbines |
| Content Type | Text |
| Resource Type | Article |
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