A new model for the propagation of jets in dilute gas-solid crossflows

The three-dimensional propagation of a horizontal gas jet injected into a g as-solid crossflow is described by a model based on the mass and momentum b alances for both phases. The potential core close to the nozzle, the kidney -shaped cross-section of the jet and the region of rapidly increasing jet v olume are taken into account. Viscous and turbulent stresses within the gas phase as well as the momentum exchange with the solid phase are considered . Several parameters are determined empirically by experimental data obtain ed by measurements in a dilute circulating fluidized bed. The comparison of calculated with experimental data shows good agreement concerning the shap e of the jet axis and the solid phase concentration.