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Title: Numerical Simulation For The Straight Pipeline After A Sonic Nozzle And Its Influence On The Discharge Coefficient
Author: Han Ke Luo Dong Shen Yuming
Source: Flomeko 2016
Year Published: 2016
Abstract: By establishing models, the numerical simulations for the outlet and the straight pipeline after sonic nozzles with throat diameters of 10 mm and 0.96 mm were carried out by means of the CFD software respectively. The comparison of simulation results and e mpirical values and experimental tests are relatively consistent. According to the simulation results, pressure changes strongly from the nozzle outlet with the straight pipeline length increasing, the critical back pressure ratio increases firstly then d ecreases when the bac k pressure ratio is less than 0.507 and 0.449, the pressure in the pipeline appears fluctuations, and the pressure fluctuations re ach 54.12% at the nozzle outlet

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