Numerical and Experimental Investigation of a Wall Jet | ||||
| ERJ. Engineering Research Journal | ||||
| Article 13, Volume 24, Issue 3, July 2001, Page 169-191 PDF (766.76 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2001.71127 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Gamal H. Moustafa; Mousa M Mohamed | ||||
| Dept. of Power Mechanical Engineering, Faculty of Engineering, Menoufia University, Shebin El-Kom, Egvpt. | ||||
| Abstract | ||||
| Numerical and experimental investigations for a wall jet at different conditions were carried out in order to understand the behavior of such a jet. A low speed incompressible jet was produced by a circular nozzle with the range of the mean velocity at the nozzle exit plane from 40 to 120 m/s. Measurements of the static and total pressures were made at different planes normal to the nozzle axis in the downstream direction. A finite difference solution for the hydrodynamic and thermal boundary layer formed by the wall jet over an isothermal plate at varying values of the initial Reynolds number was presented. The solution was obtained by a marching technique suitable for parabolic differential equations. At the first, the solution procedure was applied on the free jet and then reformulated to the wall jet. Experimental and numerical results are in good agreement with the previous work. The oil film visualization gives details of the spreading and decay processes of the jet. | ||||
| Keywords | ||||
| Wall Jet; Free jet; Spreading rate; Decay rate; Coanda effect; oil film | ||||
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