Abstract
Based on the theory of hydrodynamics, a mathematical model of nozzle water jet flow field in hydraulic cutting is established. By numerical simulation for FLUENT software, the effects of nozzle convergence angle, nozzle outlet diameter and cylindrical section length on water jet flow impact is obtained and analyzed. At the same time, a mathematical model of the nozzle outlet velocity is deduced by the simulation results. Furthermore choose optimization of nozzle parameters in the field test, which its convergence angle is 13°, convergence segment length is 10 mm, cylindrical section length is 8 mm and nozzle outlet diameter is 2 mm. Application and testing in coal mine show that this nozzle has the best comprehensive effect in hydraulic cutting field test and improve gas extraction efficiency .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
