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TA15 titanium alloy powder was prepared by Electrode Induction Melting Gas Atomization (EIGA) method at different gas pressure. The breakup behavior of molten droplet in the primary and secondary breakup process was analyzed. Also, the properties of TA15 fine powder prepared at optimized gas pressure were tested. Results shown that gas pressure played a positive role on the transformation between...
The primary fluid in a steam-jet vacuum pump is not assumed as a perfect gas as general research in the present study. A mathematic model based on the wet steam model for transonic flow is proposed to investigate the flow behaviours of primary fluid in the nozzle of a steam-jet vacuum pump. The simulation based on a wet steam model was carried out to predict the flow characteristics of primary fluid...
A mathematic model based on realizable k-ɛ turbulence model for transonic flow was proposed to investigate the mixing flow behaviours of primary and secondary fluids in steam-jet vacuum pump and the affections to the pumping performances. The simulation was carried out to predict the static pressure distribution among mixing chamber wall by a commercial computational fluid dynamics (CFD) code FLUENT...
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