HYDRODYNAMICS OF A CYCLONE CHAMBER WITH A VARYING DIRECTION OF TANGENTIAL BLOWING

Experimental and numerical studies have been made of the hydrodynamics of isothermal fl ows in a small-scale cyclone chamber (D = 0.21 m) with two-stage diff erently directed injection of tangentially blown air (with a cocurrent and countercurrent swirl). It has been established that the character of vortex fl ow with a countercurrent swire diff ers signifi cantly from the structure of fl ow with a cocurrent swirl. The character of velocity and pressure distribution in the chamber′s volume has been revealed for the fl ows in question. Dimensionless dependences have been obtained for calculating the tangential velocity and pressure in the chamber. It has been shown that results of numerical modeling of vortex fl ows with the k–ω (SST) turbulence models for the concurrent and countercurrent air swirl are in satisfactory agreement with experimental data.
Experimental and numerical studies have been made of the hydrodynamics of isothermal fl ows in a small-scale cyclone chamber (D = 0.21 m) with two-stage diff erently directed injection of tangentially blown air (with a cocurrent and countercurrent swirl). It has been established that the character of vortex fl ow with a countercurrent swire diff ers signifi cantly from the structure of fl ow with a cocurrent swirl. The character of velocity and pressure distribution in the chamber′s volume has been revealed for the fl ows in question. Dimensionless dependences have been obtained for calculating the tangential velocity and pressure in the chamber. It has been shown that results of numerical modeling of vortex fl ows with the k–ω (SST) turbulence models for the concurrent and countercurrent air swirl are in satisfactory agreement with experimental data.
Author:  E. A. Pitsukha, Yu. S. Teplitskii, É. K. Buchilko
Keywords:  cyclone chamber, cocurrent swirl, countercurrent swirl, tangential velocity, longitudinal velocity, bottom blowing, total pressure, numerical modeling
Page:  1290