The effect of wake-passing and free-stream turbulence on laminar gas turbine blade boundary layers
- Council for Scientific and Industrial Research, Pretoria (South Africa). Div. of Aeronautical Systems Technology
A computational procedure has been developed that accounts for the combined time-mean effect of wake-passing and free-stream turbulence on laminar turbine blade boundary layers. The procedure has the advantage of being computationally efficient as well as providing a realistic model of the unsteady nature of the flow. The procedure yielded the parameter Tu[radical]Re[sub D]/[radical][sigma][sub D]/2 for characterizing the time-mean flow in the leading edge region and the parameter [Lambda] ([triple bond] 2[tilde T]u[sup 2][sigma][sub x]/[gamma]) for describing the flow downstream of the stagnation point. A provisional comparison with stagnation flow experimental data showed that the procedure may be more general than initially expected.
- OSTI ID:
- 7056393
- Journal Information:
- Journal of Turbomachinery; (United States), Vol. 116:3; ISSN 0889-504X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of unsteady wake with trailing edge coolant ejection on film cooling performance for a gas turbine blade
Combined effect of grid turbulence and unsteady wake on film effectiveness and heat transfer coefficient of a gas turbine blade with air and CO{sub 2} film injection