Shock dynamics at a supersonic, two-dimensional, air intake with variable geometry

Nofar Galmidi
Work towards MSc degree under the supervision of Prof. Benveniste Natan (AE/technion) & Dr. Rimon Arieli(TASP, Technion)
Department of Aerospace Engineering
Technion – Israel Institute of Technology

Ramjets are air-breathing engines in which air is compressed aerodynamically by the “ram” effect, without any moving mechanical parts. An air-breathing engine obtains oxygen from the atmosphere instead of carrying it as in conventional rocket motors. This allows the vehicle to carry less weight and be more efficient.

Shock waves inside the inlet can affect the engine functionality (for example, by starting and unstarting). Until now, the theory only considers the final location of the wave and not the time dependent dynamics. The theory assumes a jump of the wave from one point to another and neglects its course.

The problem considered in this work is a 2-D supersonic inlet with closed door, which opens upon request, causing the swallowing of the shock. Numerical tools are used to investigate three methods of opening the inlet.

The first simulation deals with full movement of the door inlet, whereas the other two are approximations where the door closes the inlet entrance and at a certain point the door suddenly opens. Two innovative ways of analyzing the shock movement and grid convergence will be presented.

The talk will be given in Hebrew

Wed, 22-06-2022, 14:00-15:00 (Gathering at 13:45)

Classroom 165, ground floor, Library, Aerospace Eng. & https://technion.zoom.us/j/95327127884

Light refreshments will be served before the lecture


Shock dynamics at a supersonic, two-dimensional, air intake with variable geometry