Flow behind the Imperial Front Wing: comparison of results from volumetric PTV experiment and Nektar++ simulations

[2606.14342] Flow behind the Imperial Front Wing: comparison of results from volumetric PTV experiment and Nektar++ simulations Skip to main content Search Submit Donate Log in Physics > Fluid Dynamics arXiv:2606.14342 (physics) [Submitted on 12 Jun 2026 ( v1 ), last revised 24 Aug 2026 (this version, v2)] Title: Flow behind the Imperial Front Wing: comparison of results from volumetric PTV experiment and Nektar++ simulations Authors: Isabella Fumarola , Alexandra I. Liosi , Parv Khurana , Adam Meziane , Isaac Balbolia , Sherwin J. Spencer , Jonathan F. Morrison View PDF HTML (experimental) Abstract: High-fidelity simulations are increasingly adopted, due to advances in computational power and methods such as Direct Numerical Simulation (DNS) and hybrid Large-Eddy Simulation (LES). These approaches are particularly valuable for unsteady flows around complex geometries at high Reynolds numbers; however they still require careful experimental validation. Planar and stereo Particle Image Velocimetry (PIV) are widely used for measurements but limited by measurement-plane selection and their ability to capture vortices shapes and trajectories. This motivates the growing interest in volumetric techniques, historically difficult to implement in industrial settings. Recent advances in Particle Tracking Velocimetry (PTV) for measuring flows over large volumes make this approach suitable for validating numerical simulations of complex this http URL study compares volumetric PTV measurements against high-fidelity LES to assess the capabilities and limitations for industrial flows. The aim is to establish a benchmark PTV dataset for motorsport aerodynamics using the Shake-The-Box algorithm. The experiment was carried out in the 10x5 wind tunnel at Imperial College London equipped with a rolling road for ground effect simulation and capable of testing up to 50% scale F1 model. Volumetric PTV measurements were performed downstream of the open-source Imperial Front Wing (IFW) at Re=74896. Results are compared with planar PIV studies and implicit LES simulation using spectral h/p elements in Nektar++. This work addresses open questions in the literature concerning the wake of the IFW. Good quantitative agreement is observed in the wake topology. A previously unreported vortex is identified which has the key role of preventing the merging of other dominant structures. These results demonstrate the suitability of PTV and STB for industrial applications while providing a benchmark dataset for the IFW. Comments: Submitted to Measurement Science and Technology Subjects: Fluid Dynamics (physics.flu-dyn) Cite as: arXiv:2606.14342 [physics.flu-dyn] (or arXiv:2606.14342v2 [physics.flu-dyn] for this version) https://doi.org/10.48550/arXiv.2606.14342 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Isabella Fumarola [ view email ] [v1] Fri, 12 Jun 2026 10:52:17 UTC (18,025 KB) [v2] Mon, 24 Aug 2026 22:07:07 UTC (25,000 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: physics.flu-dyn < prev | next > new | recent | 2026-06 Change to browse by: physics References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. 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