Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations
Modeling of wall-bounded turbulent flows, in particular the hybridization of the Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods, has faced serious questions for decades. Specifically, there is continuous research of how usually applied methods such as detached eddy si...
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2025-06-01
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| author | Stefan Heinz |
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| description | Modeling of wall-bounded turbulent flows, in particular the hybridization of the Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods, has faced serious questions for decades. Specifically, there is continuous research of how usually applied methods such as detached eddy simulation (DES) and wall-modeled LES (WMLES) can be made more successful in regard to complex, high-Reynolds-number (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi></mrow></semantics></math></inline-formula>) flow simulations. The simple question is how it is possible to enable reliable and cost-efficient predictions of high-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi></mrow></semantics></math></inline-formula> wall-bounded turbulent flows in particular under conditions where data for validation are unavailable. This paper presents a strict analysis of strategies for the design of seamlessly resolving turbulent flow simulations for a wide class of turbulence models. The essential conclusions obtained are the following ones: First, by construction, usually applied methods like DES are incapable of systematically spanning the range from modeled to resolved flow simulations, which implies significant disadvantages. Second, a strict solution for this problem is given by novel continuous eddy simulation (CES) methods, which perform very well. Third, the design of a computational simplification of CES that still outperforms DES appears to be very promising. |
| format | Article |
| id | doaj-art-74b726fd2c7049bca3c7acf02caa4cbe |
| institution | Kabale University |
| issn | 2226-4310 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Aerospace |
| spelling | doaj-art-74b726fd2c7049bca3c7acf02caa4cbe2025-08-20T03:35:27ZengMDPI AGAerospace2226-43102025-06-0112759710.3390/aerospace12070597Strategy Analysis of Seamlessly Resolving Turbulent Flow SimulationsStefan Heinz0Department of Mathematics and Statistics, University of Wyoming, 1000 E. University Avenue, Laramie, WY 82071, USAModeling of wall-bounded turbulent flows, in particular the hybridization of the Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods, has faced serious questions for decades. Specifically, there is continuous research of how usually applied methods such as detached eddy simulation (DES) and wall-modeled LES (WMLES) can be made more successful in regard to complex, high-Reynolds-number (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi></mrow></semantics></math></inline-formula>) flow simulations. The simple question is how it is possible to enable reliable and cost-efficient predictions of high-<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><mi>e</mi></mrow></semantics></math></inline-formula> wall-bounded turbulent flows in particular under conditions where data for validation are unavailable. This paper presents a strict analysis of strategies for the design of seamlessly resolving turbulent flow simulations for a wide class of turbulence models. The essential conclusions obtained are the following ones: First, by construction, usually applied methods like DES are incapable of systematically spanning the range from modeled to resolved flow simulations, which implies significant disadvantages. Second, a strict solution for this problem is given by novel continuous eddy simulation (CES) methods, which perform very well. Third, the design of a computational simplification of CES that still outperforms DES appears to be very promising.https://www.mdpi.com/2226-4310/12/7/597computational fluid dynamicslarge eddy simulation (LES)Reynolds-averaged Navier-Stokes (RANS) methodshybrid RANS-LES methodsstrategies for resolving turbulent flow simulations |
| spellingShingle | Stefan Heinz Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations Aerospace computational fluid dynamics large eddy simulation (LES) Reynolds-averaged Navier-Stokes (RANS) methods hybrid RANS-LES methods strategies for resolving turbulent flow simulations |
| title | Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations |
| title_full | Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations |
| title_fullStr | Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations |
| title_full_unstemmed | Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations |
| title_short | Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations |
| title_sort | strategy analysis of seamlessly resolving turbulent flow simulations |
| topic | computational fluid dynamics large eddy simulation (LES) Reynolds-averaged Navier-Stokes (RANS) methods hybrid RANS-LES methods strategies for resolving turbulent flow simulations |
| url | https://www.mdpi.com/2226-4310/12/7/597 |
| work_keys_str_mv | AT stefanheinz strategyanalysisofseamlesslyresolvingturbulentflowsimulations |