Petroleum Science >2012,??Issue 1:??53-58 DOI: https://doi.org/10.1007/s12182-012-0182-0
A swirling jet from a nozzle with tangential inletsand its characteristics in breaking-up rocks Open?Access
文章信息
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China;School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China;School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China;School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China;School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266555, China
文章摘要
inlet geometric parameters and rock breaking tests under submerged conditions were studied. Numerical
simulation was used to study the influence of the nozzle structure on the swirling intensity and nozzle
discharge coefficient. Simulation results indicate that spreading angle of the swirling jet is greater than
that of the non-swirling jet, and the swirling intensity of the jet is strongly influenced by the length of
the nozzle body but weakly by the number of tangential inlets. Rock breaking tests were conducted to
evaluate the performance of the swirling jet. It is found that the swirling jet shows a lower threshold
pressure to break the rock samples and could break rock more efficiently compared with the non-swirling
jet.
关键词
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Nozzle, jet, swirling intensity, discharge coefficient, simulation, rock breaking tests