Different Design Aspects of Swirl Jet Using Vortex Generating Jets. | ||||
| MEJ- Mansoura Engineering Journal | ||||
| Article 13, Volume 20, Issue 1, March 1995, Page 63-78 PDF (675.7 K) | ||||
| Document Type: Research Studies | ||||
| DOI: 10.21608/bfemu.2021.160741 | ||||
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| Authors | ||||
| Nabil Hassan Moustafa* 1; U. Vandsburger2 | ||||
| 1Professor of Mechanical Power Engineering, Virginia Polytechnic Institute and State University. | ||||
| 2Assistant Professor of Mechanical Power Engineering, Virginia Polytechnic Institute and State University. | ||||
| Abstract | ||||
| Longitudinal streamwise vortices produced by the interaction of simple round jets with peripheral jets affecting turbulent boundary layer were investigated experimentally. The peripheral jets are used as Swirl Generator Jets (SGJ) for controlling main jets. These jets (SGJ)were pitched up with injection inclination angle of zero, 45 and 90 degree to the tangent direction of the main jet. The ratio of peripheral jet velocity to the free main jet velocity (VR=Ci/Cm) is considered in the range of 0.8 to 1.2 . The comparison of different conditions showed that the vortices produced in the jets are completely controlled by SGJs injection angle and intensity. Increasing the injection angle was found to increases the growth rate of the main jet. Image analysis also gave average spatial information about the mass entrainment through the swirl jet. Results of flow visualizations and quantitative measurements are strongly resemble each other. | ||||
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