PROPERTIES AND PARTICLE TRAJECTORIES OF {GAS-PARTICLE FLOWS IN CASCADES

An approximate method for calculating the flow properties of gas-particle mixture flowing over blades in a cascade is developed. The momentum and heat transfer between the gas and particles as well as compressibility effects are taken into consideration. The effect of particle concentration, mean diameter, particle material density, particle inlet velocity and temperature on the gas particle flow properties are investigated. The flow pressure distribution on the blade surface and the par- ticle velocities and trajectories in the nozzle are determined experimentally. The experiments are performed in a wind tunnel and in a water table. The solid particle sizes range from 5 to 1000 microns and the particle concentration range from 0.03 to 0.2.(Author)