On the effect of particles on carrier phase turbulence in gas-particle flows

A new idea on modulation of carrier phase turbulence based on a simple physical model for turbulence generation and dissipation by the particles is presented. An effort is made to predict the turbulence level in a gas-solid flow and to determine a parameter which will capture the general trend of the experimental data. An energy balance is formulated to calculate level of turbulence resulting from the introduction of particles. The model suggests the importance or interparticle spacing in establishing a turbulence length scale in particle-gas suspensions. The model shows reasonable agreement with the available data though the data are limited.