Academic Journal
A low-dissipation finite element scheme for scale resolving simulations of turbulent flows
| العنوان: | A low-dissipation finite element scheme for scale resolving simulations of turbulent flows |
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| المؤلفون: | Lehmkuhl Barba, Oriol, Houzeaux, Guillaume, Owen, Herbert, Chrysokentis, Giorgios, Rodríguez Pérez, Ivette María |
| المساهمون: | Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics, Universitat Politècnica de Catalunya. TUAREG - Turbulence and Aerodynamics in Mechanical and Aerospace Engineering Research Group |
| سنة النشر: | 2019 |
| المجموعة: | Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
| مصطلحات موضوعية: | Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids, Turbulence--Computer simulation, Eddies, Finite element method, Finite elements, Low-dissipation schemes, Turbulent flows, Large-eddy simulation, Direct numerical simulation, Turbulència -- Simulació numèrica, Remolins (Mecànica de fluids), Elements finits, Mètode dels |
| الوصف: | The present work extends the conservative convective scheme proposed by Charnyi et al. (2017) [13], originally formulated for mixed finite elements and tested in laminar flows, to equal order finite elements. A non-incremental fractional-step method is used to stabilise pressure, allowing the use of finite element pairs that do not satisfy the inf-sup conditions, such as equal order interpolation for the velocity and pressure used in this work. The final scheme preserves momentum and angular momentum at the discrete level; the error in the conservation of kinetic energy introduced by this stabilisation is of O (dt,h^2) in the case of linear finite elements. The low dissipation strategy is tested on a set of relevant turbulent cases. First, by using direct numerical simulation on the inviscid and viscous Taylor-Green vortex problem at Re =1600 and later, coupled with the Vreman (2004) [25]sub-grid stress model for performing large-eddy simulations on a turbulent channel flow at Ret=950, the flow past a sphere at ReD=10^4 and the flow around an Ahmed body at ReH=2 ×10^5. In all cases the performance of the presented formulation is fairly good and it has been capable of reproducing the reference results with good accuracy. ; Peer Reviewed ; Postprint (published version) |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | 15 p.; application/pdf |
| اللغة: | English |
| تدمد: | 0021-9991 |
| Relation: | https://www.sciencedirect.com/science/article/pii/S0021999119302372; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/TRA2017-88508-R/ES/METODOS DE ALTA PRECISION PARA EL DISEÑO DE AERONAVES DE NUEVA GENERACION/; info:eu-repo/grantAgreement/MICINN/2PE/FI-2017-2-0012; info:eu-repo/grantAgreement/MICINN/2PE/FI-2017-3-0018; Lehmkuhl, O. [et al.]. A low-dissipation finite element scheme for scale resolving simulations of turbulent flows. "Journal of computational physics", 1 Agost 2019, vol. 390, p. 51-65.; http://hdl.handle.net/2117/132321 |
| DOI: | 10.1016/j.jcp.2019.04.004 |
| الاتاحة: | http://hdl.handle.net/2117/132321 https://doi.org/10.1016/j.jcp.2019.04.004 |
| Rights: | Attribution-NonCommercial-NoDerivs 3.0 Spain ; http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ; Open Access |
| رقم الانضمام: | edsbas.33C00E53 |
| قاعدة البيانات: | BASE |
| تدمد: | 00219991 |
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| DOI: | 10.1016/j.jcp.2019.04.004 |