Effect of Homogeneous Condensation on the Interaction of Supersonic Moist Air Jets with Resonance Tube

• Main Authors: M. M. Ashraful Alam, S Matsuo, T Setoguchi
• Format: Article
• Language: English
• Published: Isfahan University of Technology 2013-01-01
• Series: Journal of Applied Fluid Mechanics
• Subjects: Compressible flow; Condensation; Non-equilibrium; Shock oscillations; Two-phase
• Online Access: http://jafmonline.net/JournalArchive/download?file_ID=27004&issue_ID=212

The Hartmann tube, can use for flow-control, is a device which generates high intensity sound through the shock wave oscillations, are created by the interaction of the supersonic jet. In this study, two-phase flow simulations are carried out to characterize the effect of non-equilibrium condensation on the unsteady flowfield of the Hartmann resonance tube. This present numerical work provides a new insight on the flow dynamics and acoustics of the resonance tube – including the shock nature, the tube gas heating, and the effect of non-equilibrium condensation on the flow structure. A TVD numerical method is applied to the Reynolds and Favre-averaged Navier-Stokes equations, and droplet growth equation of liquid phase production. The simulations are performed over a range of nozzle pressure ratios. The numerically simulated flow structure of under-expanded supersonic jets is compared with experimental data. Moreover, the predicted frequency of end wall pressure fluctuations is compared with the experimental results.