Vortex tube shape optimization for hot control valves through computational fluid dynamics

作者: Muhammad Abdul Qyyum , Adnan Aslam Noon , Feng Wei , Moonyong Lee

DOI: 10.1016/J.IJREFRIG.2019.02.014

关键词: CompressibilityTurbulenceControl valvesStreamlines, streaklines, and pathlinesMechanicsNozzleVortex tubeComputational fluid dynamicsShape optimizationMaterials science

摘要: Abstract A vortex tube (VT) is a thermofluidic device that generates cold and hot streams from single injection of compressed gas. This interesting phenomenon energy separation due to fluid dynamic effects. In this study, the optimization VT geometry was performed investigate potential applications as an expansion in natural gas processing air industries. steady-state computational dynamics (CFD) model with standard k–ɛ turbulence used solve hydrodynamics highly compressible, turbulent, swirling flow within VT. Velocity streamlines temperature distributions separated stream were obtained for different control valve shapes located at end. The CFD results showed effects shape, cone geometry, nozzle inlet pressures on performance. truncated optimized found be best choice thermal performance enhancement validated experimental data, difference temperatures between numerical values less than 4.12% 2D 2.3% 3D models.

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