TU Berlin

Numerische FluiddynamikDr. Lewin Stein

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Lewin Stein (Dr. rer. nat.)


+49 (0) 30 314 21152

Büro: VWS 120
Post: TU-Berlin, Sekr. MB1
Müller-Breslau-Straße 15
10623 Berlin


  • Fluid-Struktur-Akustik-Interaktion
  • Akustische Modellierung
  • Wellenfeldsynthese
  • Turbulente Grenz- und Scherschichten
  • Numerische Fluiddynamik: Direkte Numerische Simulation, High Performance Computing


Supercomputer Projekte

Journal Artikel

An Acoustic Model of a Helmholtz Resonator under a Grazing Turbulent Boundary Layer
Zitatschlüssel steinAcousticModel19
Autor Stein, Lewin and Sesterhenn, Jörn
Seiten 2013-2029
Jahr 2019
Journal Acta Mechanica
Jahrgang 230
Nummer 6
Zusammenfassung Acoustic models of resonant duct systems with turbulent flow depend on fitted constants based on expensive experimental test series. We introduce a new model of a resonant cavity, flush mounted in a duct or flat plate, under grazing turbulent flow. Based on previous work by Goody, Howe and Golliard, we present a more universal model where the constants are replaced by physically significant parameters. This enables the user to understand and to trace back how a modification of design parameters (geometry, fluid condition) will affect acoustic properties. The derivation of the model is supported by a detailed three-dimensional direct numerical simulation as well as an experimental test series. We show that the model is valid for low Mach number flows (M = 0.01-0.14) and for low frequencies (below higher transverse cavity modes). Hence, within this range, no expensive simulation or experiment is needed any longer to predict the sound spectrum. In principle, the model is applicable to arbitrary geometries: Just the provided definitions need to be applied to update the significant parameters. Utilizing the lumped-element method, the model consists of exchangeable elements and guarantees a flexible use. Even though the model is linear, resonance conditions between acoustic cavity modes and fluid dynamic unstable modes are correctly predicted.
Link zur Publikation Download Bibtex Eintrag


Mitbetreute Vorlesungen

Betreute Masterarbeiten

  • Gourdazi, A. (2018, Kooperation mit BMW). Temperature effects on aeroacoustics of a subsonic jet flow from an open pipe
  • Jarolin, K. (2017). Randbedingungen mit scharfen Ecken für erhaltende Finite-Differenzen-Verfahren
  • Kruse, P. (2018). Untersuchung der Dynamik des Helmholtz-Resonators mittels modaler Zerlegung

Persönliche Informationen



  • 2010 Yale University (USA) bei Prof. Hong Tang (RISE-DAAD Stipendium)
  • 2009 Tohoku University (Japan) bei Prof. Riichiro Saito (Stipendium durch Studienstiftung des deutschen Volkes)



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