ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Simulation of the velocity field of gas-solid-liquid three-phase flow inside and outsidethe abrasive water jet nozzle was studied by the computational fluid dynamics software (CFD). Thecomplicated velocity field of the flow in the abrasive water jet (AWJ) nozzle and the abrasive trackin the nozzle were obtained. In the course of the simulation, the inter-phase drag exchangecoefficient model uses Gidaspow model (gas-solid), Wen-yu model (water-solid), Schiller-Naumannmodel (water-gas) respectively. The simulation results indicate that the swirl is produced in thenozzle and the abrasives are accelerated and moved around the swirl, and they are all distributedalong the inner surface of the nozzle, the gas is mostly distributed in the center of swirl. Thedispersion of the flow happens when it flows out of the nozzle, it can be divided into three zones,that is core zone, middle zone and border zone. At the core zone the velocity changes little while thevelocity changes greatly at the middle zone, the velocity fluctuates greatly at the border zone
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.833.pdf
