Numerical calculations of turbulent heat transfer downstream of a rearwardfacing step
Abstract
Examples of turbulent flowfield patterns and local heat transfer coefficients for a twodimensional rearward facing step are presented as generated by a two equation kinetic energydissipation length scale model. The governing equations for momentum, energy, turbulent kinetic energy, and diffusion are defined, together with wall functions for velocity, temperature, the turbulent kinetic energy, and the turbulent kinetic energy dissipation rate. Attention is given to the proper choice of the approach profiles and numerical solution using the TEACHT computer code. Calculations for three Re flows are described and compared with previous experimental data for a rearward facing step. Good agreement is demonstrated, and the model is concluded to yield values accurate enough for use in determining the heat transfer coefficients in engineering applications.
 Publication:

Numerical Methods in Laminar and Turbulent Flow
 Pub Date:
 1981
 Bibcode:
 1981nmlt.proc..639G
 Keywords:

 Backward Facing Steps;
 Computational Fluid Dynamics;
 Convective Heat Transfer;
 Kinetic Energy;
 Temperature Distribution;
 Turbulent Heat Transfer;
 Energy Dissipation;
 Flow Velocity;
 Heat Transfer Coefficients;
 Low Reynolds Number;
 Recirculative Fluid Flow;
 Fluid Mechanics and Heat Transfer