COMPARISON OF DIFFERENT TWO-EQUATION TURBULENCE MODELS FOR PREDICTION OF FILM COOLING FROM TWO ROWS OF HOLES

The present investigation involves the prediction of film cooling from two rows of holes using different turbulence models. Predictions of film cooling effectiveness and the velocity field from two rows of holes inclined in the streamwise direction are presented using the k-ω model and a modified version of it, as well as the standard k-e model together with its nonisotropic version. Comparison between the predicted results using these models and previous experimental results indicates that the ability of a turbulence model to prediet the experimental results depends heavily on the blowing rate as well as on the distance downstream from the injection holes.

[1]  D. B. Spalding,et al.  An Improved Version of the k-W Model of Turbulence , 1983 .

[2]  Dudley Brian Spalding,et al.  FLUID FLOW AND HEAT TRANSFER IN THREE-DIMENSIONAL DUCT FLOWS , 1976 .

[3]  B. Jubran,et al.  Film cooling from two rows of holes inclined in the streamwise and spanwise directions , 1985 .

[4]  J. Straub,et al.  Film Cooling and Heat Transfer in Nozzles , 1987 .

[5]  D. Spalding,et al.  Heat and Mass Transfer in Boundary Layers. 2nd edition. By S. V. PATANKAR and D. B. SPALDING. Intertext Books, 1970. 255 pp. £6. , 1971, Journal of Fluid Mechanics.

[6]  Wolfgang Rodi,et al.  Systematic Study of Film Cooling With a Three-Dimensional Calculation Procedure , 1986 .

[7]  A. D. Gosman,et al.  The Prediction of Three-Dimensional Discrete-Hole Cooling Processes: Part 2—Turbulent Flow , 1981 .

[8]  Wolfgang Rodi,et al.  Prediction of Film Cooling by a Row of Holes With a Two-Dimensional Boundary-Layer Procedure , 1987 .

[9]  S. Patankar,et al.  Prediction of the Three-Dimensional Velocity Field of a Deflected Turbulent Jet , 1977 .

[10]  N. Markatos,et al.  The mathematical modelling of turbulent flows , 1986 .

[11]  A locally elliptic calculation procedure for three-dimensional flows and its application to a jet in a cross-flow , 1980 .

[12]  A. D. Gosman,et al.  The Prediction of Three-Dimensional Discrete-Hole Cooling Processes—Part 1: Laminar Flow , 1976 .

[13]  B. Launder,et al.  The numerical computation of turbulent flows , 1990 .

[14]  Ayodeji O. Demuren.  Numerical calculations of steady three-dimensional turbulent jets in cross flow , 1983 .

[15]  D. B. Spalding,et al.  A two-parameter model of turbulence, and its application to free jets , 1970 .

[16]  B. A. Jubran.  Correlation and Prediction of Film Cooling From Two Rows of Holes , 1989 .

[17]  Wolfgang Rodi,et al.  The prediction of free turbulent boundary layers by use of a two-equation model of turbulence , 1973 .

[18]  M. Nallasamy,et al.  Turbulence models and their applications to the prediction of internal flows: a review , 1987 .

[19]  J. H. Whitelaw,et al.  The effectiveness of three-dimensional film-cooling slots—II. Predictions , 1973 .