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Modelling roughness and receptivity in three-dimensional boundary layers
KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.
KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.ORCID-id: 0000-0002-5913-5431
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW.ORCID-id: 0000-0002-4346-4732
Visa övriga samt affilieringar
2011 (Engelska)Ingår i: 7th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2011, International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2011, s. 1-6Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

The receptivity of a swept-wing boundary layer to localised surface roughness is studied by means of direct numerical simulations (DNS). The flow case considered is meant to model wind tunnel experiments performed at the Arizona State University by Saric & coworkers. The receptivity amplitude of the crossflow disturbances predicted by the DNS is 40% of that measured in the experiments. The DNS results are then used to evaluate the performance of different receptivity models based on either the parabolised stability equations or the finite Reynolds number theory (FRNT). In general it is found that receptivity amplitudes are well predicted for micron sized roughness elements if non-parallel effects are accounted for. 

Ort, förlag, år, upplaga, sidor
International Symposium on Turbulence and Shear Flow Phenomena, TSFP , 2011. s. 1-6
Nyckelord [en]
Atmospheric thermodynamics, Boundary layers, Number theory, Reynolds number, Surface roughness, Swept wings, Turbulence, Wind tunnels, Arizona state university, Finite Reynolds number, Receptivity model, Roughness elements, Stability equations, Swept-wing boundary layers, Three-dimensional boundary layers, Wind tunnel experiment, Shear flow
Nationell ämneskategori
Strömningsmekanik och akustik
Identifikatorer
URN: urn:nbn:se:kth:diva-237217Scopus ID: 2-s2.0-85048542405OAI: oai:DiVA.org:kth-237217DiVA, id: diva2:1259717
Konferens
7th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2011; Ottawa Convention Centre Ottawa; Canada; 28 July 2011 through 31 July 2011
Anmärkning

QC 20181030

Tillgänglig från: 2018-10-30 Skapad: 2018-10-30 Senast uppdaterad: 2018-10-30Bibliografiskt granskad

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Tempelmann, DavidSchrader, L. -UHanifi, ArdeshirBrandt, LucaHenningson, Dan S.

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Tempelmann, DavidSchrader, L. -UHanifi, ArdeshirBrandt, LucaHenningson, Dan S.
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Linné Flow Center, FLOWMekanikSeRC - Swedish e-Science Research Centre
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