The Solution-Adaptive Numerical Simulation of the Three-Dimensional Viscous Flow in the Serpentine Coolant Passage of a Radial Inflow Turbine Blade

This paper describes the application of a solution-adaptive, three-dimensional Navier–Stokes solver to the problem of the flow in turbine internal coolant passages. First, the variation of Nusselt number in a cylindrical, multiribbed duct is predicted and found to be in acceptable agreement with exp...

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Bibliographic Details
Published in:Journal of Turbomachinery; (United States) 1994-01, Vol.116 (1), p.141-148
Main Author: Dawes, W. N.
Format: Article
Language:English
Subjects:
20 FOSSIL-FUELED POWER PLANTS
BAFFLES
CONTROL EQUIPMENT
CONVECTION
ENERGY TRANSFER
FLOW REGULATORS
FORCED CONVECTION
HEAT TRANSFER
MACHINERY
MASS TRANSFER
MATHEMATICAL MODELS
RADIAL INFLOW TURBINES
TURBINE BLADES
TURBINES
TURBOMACHINERY 200104 > Fossil-Fueled Power Plants-- Components
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Summary:This paper describes the application of a solution-adaptive, three-dimensional Navier–Stokes solver to the problem of the flow in turbine internal coolant passages. First, the variation of Nusselt number in a cylindrical, multiribbed duct is predicted and found to be in acceptable agreement with experimental data. Then the flow is computed in the serpentine coolant passage of a radial inflow turbine including modeling the internal baffles and pin fins. The aerodynamics of the passage, particularly that associated with the pin fins, is found to be complex. The predicted heat transfer coefficients allow zones of poor coolant penetration and potential hot spots to be identified.
ISSN:0889-504X
1528-8900
DOI:10.1115/1.2928268