Boundary layer transition model

Details Boundary layer transition model Boundary layer transition model

2006-12-19

2006-12-19

Swiatek, Robert P. (Department: 3643)

Aeronautics and astronautics

Miscellaneous

C244S03400R, C073S147000, C073S432100

Reexamination Certificate

active

07150427

ABSTRACT:
In the computational fluid dynamics analysis of airfoils, a laminar/turbulent transition location is determined by consideration of a turbulence length scale in addition to a turbulence intensity. In an exemplary implementation, the transition is predicted as occurring when a momentum thickness-based Reynolds number reaches a given exponent of the factor multiplied by a constant. The factor may consist of the turbulence intensity multiplied by a momentum thickness and divided by the turbulence length scale.

REFERENCES:
patent: 4188823 (1980-02-01), Hood
patent: 4848153 (1989-07-01), Stack et al.
patent: 4896532 (1990-01-01), Schmalz
patent: 5538201 (1996-07-01), Gerhardt
patent: 6138955 (2000-10-01), Gutmark et al.
Robert Edward Mayle, The Role of Laminar-Turbulent Transition in Gas Turbine Engines, Journal of Turbomachinery, Oct. 1991, pp. 509-537, vol. 113.
B.J. Abu-Ghannam et al., Natural Transition of Boundary Layers—the Effects of Turbulence, Pressure Gradient, and Flow History, Journal Mechanical Engineering Science, 1980, pp. 213-228, vol. 22.

Affiliated with

Also associated with

Rating

Boundary layer transition model does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Boundary layer transition model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boundary layer transition model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3675862