Bursting frequency prediction in turbulent boundary layers
- Sandia National Laboratories
The frequencies of the bursting events associated with the streamwise coherent structures of spatially developing incompressible turbulent boundary layers were predicted using global numerical solution of the Orr-Sommerfeld and the vertical vorticity equations of hydrodynamic stability problems. The structures were modeled as wavelike disturbances associated with the turbulent mean flow. The global method developed here involves the use of second and fourth order accurate finite difference formula for the differential equations as well as the boundary conditions. An automated prediction tool, BURFIT, was developed. The predicted resonance frequencies were found to agree very well with previous results using a local shooting technique and measured data.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 751033
- Report Number(s):
- SAND2000-0221
- Country of Publication:
- United States
- Language:
- English
Similar Records
Turbulent wall pressure and wall shear fluctuations calculated from the Orr-Sommerfeld equation with nonlinear forcing terms
Turbulent boundary-layer modification by streamlined devices