A Compressible Turbulent Flow in a Molecular Kinetic Gas Model
Abstract
This is the continuation of the effort to utilize a kinetic molecular model approach to the problem of turbulence oriented computation of compressible flow. The Boltzmann equation is employed in its integral form with the BGK model of the collision term. This time, we compute a periodic compressible flow inside a unit cube from a random velocity field having an energy spectrum of isotropic type, uniform density and temperature. Results show the development of many small shock waves like structures along with vortex or eddy shocklets scattered in the entire flow field. While the energy spectrum does not change much in its pattern with time, as should be the case, some quantities like density distribution changes quickly to a turbulent state from its initial uniform one. Some geometric properties of computed flow field are derived from its velocity deformation tensor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 09, 2000
- Accession Number
- ADA400856
Entities
People
- Akira Sakurai
- Fumio Takayama
Organizations
- Tokyo Denki University