Abstract
The present work discusses the predictive capabilities of the PANS model of turbulence (Partially-Averaged Navier Stokes; Basara et al. [4], representing a hybrid RANS/LES (Reynolds-Averaged Navier-Stokes/Large Eddy Simulation) modelling scheme, by means of simulating the flow past different car configurations including also overtaking maneuver cases. The unresolved residual turbulence is modelled by an appropriately adapted RANS-ζ-f formulation (proposed originally by Hanjalic et al. [9]). The investigated car configurations include a 40% down-scaled BMW model [17] as well as the so-called “DrivAer” car model [10]. As outcome of an intensive computational campaign by employing the PANS-ζ-f model formulation detailed mean flow and turbulence fields are obtained illustrating the model’s predictive capabilities in capturing unsteady features and corresponding time-averaged flow properties in a wide range of car configurations considered.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
AVL AST: AVL FIRE Manual v2011, AVL List GmbH (2011)
Ashton, N., Unterlechner, P., Blacha, T.: Assessing the sensitivity of hybrid RANS-LES simulations to mesh resolution, numerical schemes and turbulence modelling within an industrial CFD process. SAE Technical Paper, 2018-01-0709 (2018)
Basara, B.: An eddy viscosity transport model based on elliptic relaxation approach. AIAA J. 44, 1686–1690 (2006)
Basara, B., Krajnovic, S., Girimaji, S., Pavlovic, Z.: Near-Wall Formulation of the Partially Averaged Navier-Stokes Turbulence Model. AIAA J. 49(12), 2627–2636 (2011)
Chang, C.-Y., Jakirlić, S., Basara, B., Tropea, C.: Predictive capability assessment of the PANS-ζ-fmodel of turbulence. Part I: physical rationale by reference to wall-bounded flows including separation (pp. 371–383) and Part II: application to swirling and tumble/mean-compression flows (pp. 385–398). In: Girimaji, S., et al. (eds.) Advances in Hybrid RANS-LES Modelling 5. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol. 130. Springer. ISBN 978-3-319-15140-3 (2015)
Frank, T., Gerlicher, B., Abanto, J.: DrivAer—Aerodynamic Investigations for a New Realistic Generic Car Model using ANSYS CFD. Automotive Simulation World Congress, October. Frankfurt, Germany (2013)
Gaylard, A., Oettle, N., Gargoloff, J., Duncan, B.: Evaluation of non-uniform upstream flow effects on vehicle aerodynamics. SAE Int. J. Passeng. Cars—Mech. Syst. 7(2), 692–702 (2014)
Guilmineau, E.: Numerical simulations of flow around a realistic generic car model. SAE Int. J. Passeng. Cars – Mech. Syst. 7(2), 646–653 (2014)
Hanjalic, K., Popovac, M., Hadziabdic, M.: A robust near-wall elliptic-relaxation eddy-viscosity turbulence model for CFD. Int. J. Heat and Fluid Flow 25, 1047–1051 (2004)
Heft, A., Indinger, T., Adams, N.: Introduction of a new realistic generic car model for aerodynamic investigations. SAE Technical Paper, 2012-01-0168 (2012)
Jakirlić, S., Kutej, L., Basara, B., Tropea, C.: Computational study of the aerodynamics of a realistic car model by means of RANS and hybrid RANS/LES approaches. SAE Int. J. Passeng. Cars—Mech. Syst. 7(2), 559–574 (2014)
Jakirlić, S., Kutej, L., Hanssmann, D., Basara, B. Tropea, C.: Eddy-resolving simulations of the Notchback DrivAer model: influence of underbody geometry and wheels rotation on aerodynamic behaviour. SAE Technical Paper Series 2016-01-1062 (2016)
Jakirlić, S., Kutej, L., Hanssmann, D., Basara, B., Schütz, T., Tropea, C.: Rear-end shape influence on the aerodynamic properties of a realistic car model: a RANS and LES/RANS study. In: Dillmann et al. (eds.) New Results in Numerical and Experimental Fluid Mechanics X. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vo1. 32, pp. 397–407. Springer. ISBN: 978-3-319-27279-5 (2016)
Jakirlić, S., Kutej, L., Unterlechner, P., Tropea, C.: Critical assessment of some popular scale-resolving turbulence models for vehicle aerodynamics. SAE Int. J. Passeng. Cars – Mech. Syst. V126-6EJ 10(1), 235–250 (2017)
Jakirlić, S., Kutej, L., Basara, B., Tropea, C.: Scale-resolving simulation of an ‘on-road’ overtaking maneuver involving model vehicles. SAE Technical Paper Series 2018-01-0706 (2018)
Popovac, M., Hanjalic, K.: Compound wall treatment for RANS computation of complex turbulent flows and heat transfer. Flow Turbul. Combust. 78, 177–202 (2007)
Schreffl, M.: Instationäre Aerodynamik von Kraftfahrzeugen - Aerodynamik bei Überholvorgang und böigem Seitenwind. Ph.D. Thesis, Technische Universität Darmstadt, Germany, Shaker Verlag Aachen. ISBN 978-3-8322-7010-0 (2008)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Switzerland AG
About this paper
Cite this paper
Jakirlic, S., Kutej, L., Basara, B., Tropea, C. (2020). On PANS-ζ-f Model Assessment by Reference to Car Aerodynamics. In: Hoarau, Y., Peng, SH., Schwamborn, D., Revell, A., Mockett, C. (eds) Progress in Hybrid RANS-LES Modelling . Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 143. Springer, Cham. https://doi.org/10.1007/978-3-030-27607-2_11
Download citation
DOI: https://doi.org/10.1007/978-3-030-27607-2_11
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-27606-5
Online ISBN: 978-3-030-27607-2
eBook Packages: EngineeringEngineering (R0)