Title: | Development of Wall Models for LES Based on Nonlinear Stochastic Estimation | Authors: | Abel, Markus Stojkovic, Dragan Breuer, Michael |
Language: | eng | Subject (DDC): | 000 Informatik, Information & Wissen, allgemeine Werke 500 Naturwissenschaften 600 Technik |
Issue Date: | 2004 | Publisher: | Springer | Document Type: | Conference Object | Source: | Abel, M., Stojković, D., Breuer, M. (2004). Development of Wall Models for Large-Eddy Simulation Based on Nonlinear Stochastic Estimation. In: Friedrich, R., Geurts, B.J., Métais, O. (eds) Direct and Large-Eddy Simulation V. ERCOFTAC Series, vol 9. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-2313-2_12 | Journal / Series / Working Paper (HSU): | ERCOFTAC Series | Volume: | 9 | Page Start: | 99 | Page End: | 108 | Published in (Book): | Direct and Large–Eddy Simulation V | Publisher Place: | Dordrecht | Conference: | Fifth International ER- COFTAC Workshop on DNS and LES: DLES-5, Munich University of Tech- nology, Germany, Aug. 27–29, 2003 | Abstract: | We present results on a priori estimation of LES wall models by nonlinear stochastic estimation (NLSE). The results are given in form of nonparametric, generalized additive models. First results on a posteriori LES are shown. The analyzed data are taken from a DNS of plane channel flow. The applied method allows for quantitative identification of important model terms and reveals physical mechanisms of the near-wall region. Investigated models are generalizations of known algebraic models. With usual linear methods the resulting functions cannot be found. Additional terms like the wall-normal velocity component and the streamwise pressure gradient are included in the wall model. We find that different terms become important in different regions near the wall. |
Organization Units (connected with the publication): | Strömungsmechanik | ISBN: | 978-90-481-6575-9 | Publisher DOI: | 10.1007/978-1-4020-2313-2_12 |
Appears in Collections: | 6 - Bibliographic Data - Publications of the HSU Researchers (before HSU) |
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