Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model

The turbulent flow over the DrivAer fastback model is here investigated with an order-adaptive discontinuous Galerkin (DG) method. The growing need of high-fidelity flow simulations for the accurate determination of problems, e.g., vehicle aerodynamics, promoted research on models and methods to imp...

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Autores principales:	Alessandro Colombo, Andrea Bortoli, Pierangelo Conti, Andrea Crivellini, Antonio Ghidoni, Alessandra Nigro, Gianmaria Noventa
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	car aerodynamics DrivAer model discontinuous Galerkin Implicit LES order-adaptive method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/596c22a40b7049bd91caa69668ad5b99
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spelling	oai:doaj.org-article:596c22a40b7049bd91caa69668ad5b992021-11-11T15:15:33ZAssessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model10.3390/app1121102022076-3417https://doaj.org/article/596c22a40b7049bd91caa69668ad5b992021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10202https://doaj.org/toc/2076-3417The turbulent flow over the DrivAer fastback model is here investigated with an order-adaptive discontinuous Galerkin (DG) method. The growing need of high-fidelity flow simulations for the accurate determination of problems, e.g., vehicle aerodynamics, promoted research on models and methods to improve the computational efficiency and to bring the practice of Scale Resolving Simulations (SRS), like the large-eddy simulation (LES), to an industrial level. An appealing choice for SRS is the Implicit LES (ILES) via a high-order DG method, where the favourable numerical dissipation of the space discretization scheme plays directly the role of a subgrid-scale model. Implicit time integration and the <i>p</i>-adaptive algorithm reduce the computational cost allowing a high-fidelity description of the physical phenomenon with very coarse mesh and moderate number of degrees of freedom. Two different models have been considered: (<i>i</i>) a simplified DrivAer fastback model, without the rear-view mirrors and the wheels, and a smooth underbody; (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>i</mi><mi>i</mi></mrow></semantics></math></inline-formula>) the DrivAer fastback model, without rear-view mirrors and a smooth underbody. The predicted results have been compared with experimental data and CFD reference results, showing a good agreement.Alessandro ColomboAndrea BortoliPierangelo ContiAndrea CrivelliniAntonio GhidoniAlessandra NigroGianmaria NoventaMDPI AGarticlecar aerodynamicsDrivAer modeldiscontinuous GalerkinImplicit LESorder-adaptive methodTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10202, p 10202 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	car aerodynamics DrivAer model discontinuous Galerkin Implicit LES order-adaptive method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	car aerodynamics DrivAer model discontinuous Galerkin Implicit LES order-adaptive method Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Alessandro Colombo Andrea Bortoli Pierangelo Conti Andrea Crivellini Antonio Ghidoni Alessandra Nigro Gianmaria Noventa Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
description	The turbulent flow over the DrivAer fastback model is here investigated with an order-adaptive discontinuous Galerkin (DG) method. The growing need of high-fidelity flow simulations for the accurate determination of problems, e.g., vehicle aerodynamics, promoted research on models and methods to improve the computational efficiency and to bring the practice of Scale Resolving Simulations (SRS), like the large-eddy simulation (LES), to an industrial level. An appealing choice for SRS is the Implicit LES (ILES) via a high-order DG method, where the favourable numerical dissipation of the space discretization scheme plays directly the role of a subgrid-scale model. Implicit time integration and the <i>p</i>-adaptive algorithm reduce the computational cost allowing a high-fidelity description of the physical phenomenon with very coarse mesh and moderate number of degrees of freedom. Two different models have been considered: (<i>i</i>) a simplified DrivAer fastback model, without the rear-view mirrors and the wheels, and a smooth underbody; (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>i</mi><mi>i</mi></mrow></semantics></math></inline-formula>) the DrivAer fastback model, without rear-view mirrors and a smooth underbody. The predicted results have been compared with experimental data and CFD reference results, showing a good agreement.
format	article
author	Alessandro Colombo Andrea Bortoli Pierangelo Conti Andrea Crivellini Antonio Ghidoni Alessandra Nigro Gianmaria Noventa
author_facet	Alessandro Colombo Andrea Bortoli Pierangelo Conti Andrea Crivellini Antonio Ghidoni Alessandra Nigro Gianmaria Noventa
author_sort	Alessandro Colombo
title	Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
title_short	Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
title_full	Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
title_fullStr	Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
title_full_unstemmed	Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model
title_sort	assessment of a discontinuous galerkin method for the simulation of the turbulent flow around the drivaer car model
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/596c22a40b7049bd91caa69668ad5b99
work_keys_str_mv	AT alessandrocolombo assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT andreabortoli assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT pierangeloconti assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT andreacrivellini assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT antonioghidoni assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT alessandranigro assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel AT gianmarianoventa assessmentofadiscontinuousgalerkinmethodforthesimulationoftheturbulentflowaroundthedrivaercarmodel
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Assessment of a Discontinuous Galerkin Method for the Simulation of the Turbulent Flow around the DrivAer Car Model

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