VMFL043

VMFL043
Laminar to Turbulent Transition of Boundary Layer over a Flat Plate

Overview

Reference
A. M. Savill. “Some recent progress in the turbulence modeling of bypass transition”. Near-Wall Turbulent Flows. Elsevier Science Publishers, pp. 829-848,1993.
P.E. Roach, D.H. Brierley. “The influence of a turbulent free stream on zero pressure gradient transitional boundary layer development. Part I: Test Cases T3A and T3B”. Simulation of Unsteady and Transition to Turbulence. Cambridge University Press. Cambridge, pp. 319-347, 1992.
SolverAnsys Fluent
Physics/ModelsSST model, transitional flow
Input File
VMFL043_transition.cas
Project FilesLink to Project Files Download Page

Test Case

Laminar to turbulent transition of a boundary layer over a flat plate is modeled. The free stream turbulence intensity is 3.3%.

Figure 110: Flow Domain

Flow Domain

Material PropertiesGeometry Boundary Conditions

Density: 1.2 kg/m3

Viscosity: 1.831 X 10-5 kg/m-s

Length of the flat plate = 2m

Inlet Velocity = 5.3 m/s

Inlet eddy viscosity ratio = 9.7

Analysis Assumptions and Modeling Notes

The flow is steady. SST model with Gamma Theta model for transitional turbulence is used. Langry Menter correlation was used for transition onset.

Results Comparison for Ansys Fluent

Figure 111: Comparison of Skin Friction Coefficient on the Plate

Comparison of Skin Friction Coefficient on the Plate