05 - Propulsion
BASE FLOW CHARACTERISTICS FOR A SUB-SCALE HIGH-SPEED EXHAUST AT OVER-EXPANDED MODE
S. Tsentis¹, I. Goulos¹, S. Prince¹, V. Pachidis¹, V. Zmijanovic, Reaction Engines Ltd, United Kingdom; ¹Cranfield University, United Kingdom
The flow of a high-speed exhaust at overexpansion mounted on the tunnel wall through a wing is presented. DDES computations are performed to analyse the flow. Results show that the mean and fluctuating pressure is significantly reduced behind the pylon. This is also confirmed through the application of POD. This flow asymmetry can increase base drag and cause side loads on wingtip-mounted engines