Effects of calculated experimental freestream conditions on double cone numerical predictions

Conference item

This paper evaluates the accuracy of freestream prediction methods for expansion tunnel experiments. A hybrid L1d–Eilmer CFD approach simulates flow in the X3 tunnel to generate a pseudo-experimental dataset, which is then analysed using a widely adopted state-to-state equilibrium chemistry tool. This comparison highlights discrepancies in freestream predictions that feed into broader CFD simulations and validation cases. The impact of these differences is demonstrated through thermochemical non-equilibrium double cone simulations using Eilmer.

Authors: Kennedy, A; McGilvray, M; Gollan, RJ

• Publication status: Accepted
• Peer review status: Peer reviewed
• Acceptance date: 2025-07-18
• Event title: 35th International Symposium on Shock Waves (ISSW 2035)
• Event location: Brisbane, Australia
• Event website: https://mechmining.uq.edu.au/issw35
• Event start date: 2025-07-05
• Event end date: 2025-07-14
• Language: English
• Keywords: expansion tunnel; double cone; thermochemical non-equilibrium