Development of an Eddy Collision Model of Turbulence
Abstract
Simple fluids such as gasses and liquids are the result of collisions between molecules. More complex fluids, such as granular flows and colloidal suspensions (non-Newtonian fluids), result from the more complex collision (or interaction) behaviors of their constituent particles. In this project we have demonstrated that collision rules can be constructed for large chunks of fluid material (eddies) such that the resulting collective system behaves like the mean (RANS) flow of a turbulent fluid. These collision rules are, in essence, a turbulence model. This project has demonstrated its three primary objectives. First, it has shown that modeling turbulent flow as a collection of colliding (interacting) objects (eddies) is a theoretically viable approach. Second, the project has shown that modeling turbulence in this way can be made computationally efficient and comparable to classic Reynolds stress transport (RST) models. Finally, the collisional approach to turbulence modeling has lead to some insights into turbulence and turbulence modeling that would probably not have been achieved via the traditional RST approach.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 22, 2004
- Accession Number
- ADA425492
Entities
People
- Blair Perot
Organizations
- University of Massachusetts Amherst