Particle/droplet characterization in multiphase aerodynamic flows
Abstract
A study is made of the basic interaction parameters relating to the influence of the continuous phase flow properties on the flow, response and lag of the dispersed phase while also including the dispersed phase modulation of the turbulence level in the continuous phase. Scale ratios which are used in determining the nature of the continuous phase-dispersed phase interaction are examined and are developed based on physically characterizable quantities. This facilitates the direct extension of single-phase codes that employ algebraic eddy viscosity models to include the presence of dispersed phases. Certain inferences are also obtained from experimental data taken in multiphase systems in a low velocity rotating geometry and criteria for determining lag and response of a particle in a turbulent environment are arrived at.
- Publication:
-
24th AIAA Aerospace Sciences Meeting
- Pub Date:
- January 1986
- Bibcode:
- 1986aiaa.meetV....N
- Keywords:
-
- Aerodynamic Forces;
- Drops (Liquids);
- Eddy Viscosity;
- Particle Motion;
- Turbulent Flow;
- Two Phase Flow;
- Boussinesq Approximation;
- Navier-Stokes Equation;
- Fluid Mechanics and Heat Transfer