A numerical simulation of the flow field and heat transfer in a rectangular duct with a turbulator using a predictor-corrector algorithm
Abstract
A numerical study of the flow field and heat transfer in a turbine blade internal cooling passage is described. Attention is focused on a short straight section of the rectangular passage which includes a single turbulator protruding from its floor. The two-dimensional, transient, Reynolds averaged Navier-Stokes, continuity and energy equations are iterated to a steady state solution using the MacCormack explicit predictor-corrector algorithm. Turbulence closure is achieved through the use of the Baldwin-Lomax form of the Cebeci-Smith algebraic two-layer eddy viscosity model. Plots of skin friction, local heat transfer rate, streamlines, velocity profiles and temperature profiles are given. It was found that the widely used Reynolds Analogy greatly underpredicts the heat transfer rate as given by a direct calculation using Fourier's law.
- Publication:
-
AIAA, ASME, SAE, and ASEE, 24th Joint Propulsion Conference
- Pub Date:
- July 1988
- Bibcode:
- 1988jpbm.confQ....B
- Keywords:
-
- Computational Fluid Dynamics;
- Ducted Flow;
- Flow Distribution;
- Heat Transfer;
- Predictor-Corrector Methods;
- Turbine Blades;
- Duct Geometry;
- Flow Equations;
- Skin Friction;
- Temperature Profiles;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer