STO-Activities: (no title)
Activity title:
Vortex Flow Predictions for Stability and Control of Missile Airframes
Activity Reference:
AVT-390
Panel:
AVT
Security Classification:
NATO UNCLASSIFIED
Status:
Active
Activity type:
RTG
Start date:
2024-01-01T00:00:00Z
Actual End date:
2026-12-31T00:00:00Z
Keywords:
Computational Fluid Dynamics, missile aerodynamics, validation, verification, Vortices
Background:
Military air vehicle operational tactics frequently include requirements for agile maneuverability. This is especially true of missile systems, which rely on the generation and control of vortical flows to produce the aerodynamic effects required to acquire their targets. Multiple vortices are generated by a missile airframe; these must be carefully balanced to ensure the airframe can be controlled throughout its flight. CFD offers great potential for improving the techniques used to develop novel missile airframes. However, as recent STO activities (e.g. AVT-316) have shown, there are many challenges to address before it may be used with confidence to this end.
Objectives:
Objectives: (1) To evaluate the capability of current and emerging computational techniques for reducing numerical uncertainty in CFD predictions of vortex flows. (If not managed carefully, this can be the dominant source of prediction error.) (2) To use computational experimentation to guide the design of a physical (wind tunnel) test specifically for the purpose of computational model validation. (3) To undertake the physical test. (4) By comparing computed and measured data, to evaluate the current state-of-the-art of CFD regarding vortex flow prediction.
Deliverable: The principal deliverable will be an STO Technical Report.
Topics:
Building on the lessons learned via AVT-316, close attention will be paid to addressing the different stages in vortex flow development, from formation through to maturation, including the various forms of interaction (with other flow features or airframe components) that may be encountered along the way. Areas of interest will include comparative evaluation of novel adaptive mesh refinement schemes and advanced hybrid RANS-LES modelling approaches. Work will focus on test cases previously studied in AVT-316, with key developments being informed by the acquisition of physical test data inspired by the OTC1 Test Case which, to date, has only been studied “blind” (i.e. without physical referent data).
Contact:
Open2Partners:
Title:
Created at 18/10/2022 18:00 by System Account
Last modified at 16/05/2024 08:00 by System Account
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