Importance of a second entrance in a test cell
Journal Title: INCAS BULLETIN - Year 2018, Vol 10, Issue 1
Abstract
The present paper studies the influence of a secondary intake and its effect on the jet stability. Three configurations have been analyzed: one with the secondary intake closed, the second having a convergent nozzle after the augmentor tube and the third case using a perforated augmentor tube. The secondary intake is used to supply air for cooling the exhaust system. Numerical simulation was realized using the k-є model, which is the most used CFD turbulence model, especially for turbulent flow conditions. The results obtained showed that secondary intake influences the jet stability, because of the pressure differences from the two zones. To resolve this closing the secondary intake is the best option available.
Authors and Affiliations
Oana DUMITRESCU, George Bogdan GHERMAN, Ionut PORUMBEL
Keywords
Related Articles
- EP ID EP294897
- DOI 10.13111/2066-8201.2018.10.1.7
- Views 78
- Downloads 0
Investigation and design of a C-Wing passenger aircraft
A novel nonplanar wing concept called C-Wing is studied and implemented on a commercial aircraft to reduce induced drag which has a significant effect on fuel consumption. A preliminary sizing method which employs an opt...
The Effects of Fibre Volume Fraction on a Glass-Epoxy Composite Material
This paper focuses on the analysis of the longitudinal mechanical properties of Glass Fibre Reinforce Plastic (GFRP) plates with different fibre volume fraction, Vf, by considering both analytical and experimental method...
Using genetic algorithms to optimize airfoils in incompressible regime
Aerodynamic optimization is a very actual problem in aircraft design and airfoils are basic two-dimensional shape forming cross sections of wings. Traditionally, the airfoil geometry if defined by a very large number of...
Aerodynamic performance prediction of Darrieus-type wind turbines
The prediction of Darrieus wind turbine aerodynamic performances provides the necessary design and operational data base related to the wind potential. In this sense it provides the type of turbine suitable to the area w...
Reducing Fuel Consumption in Bucharest Terminal Area for Flights Using a Standard Instrument Departure
Reconfiguration of the standard instrument departure and standard arrival routes at certain airports can bring significant reductions in fuel consumption and level of noise. This can be done either by implementing modern...