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Statements

Subject Item
n2:RIV%2F68407700%3A21220%2F09%3A00158735%21RIV10-GA0-21220___
rdf:type
n21:Vysledek skos:Concept
dcterms:description
The work deals with numerical solution of incompressible and compressible turbulent flows over rough walls. The mathematical model is based on averaged Navier-Stokes equations with two-equation SST or EARSM turbulence models. The low-Re versions are used and the wall roughness is modelled by means of the boundary condition for specific dissipation rate. The numerical solution is obtained by means of implicit upwind finite volume schemes. The presented cases are incompressible constant-pressure boundary-layer flow, incompressible flow over a ramp and compressible flow through a turbine cascade. The comparison of the numerical solution with experimental data shows that the adopted roughness model is well suitable for both used turbulence models. The work deals with numerical solution of incompressible and compressible turbulent flows over rough walls. The mathematical model is based on averaged Navier-Stokes equations with two-equation SST or EARSM turbulence models. The low-Re versions are used and the wall roughness is modelled by means of the boundary condition for specific dissipation rate. The numerical solution is obtained by means of implicit upwind finite volume schemes. The presented cases are incompressible constant-pressure boundary-layer flow, incompressible flow over a ramp and compressible flow through a turbine cascade. The comparison of the numerical solution with experimental data shows that the adopted roughness model is well suitable for both used turbulence models.
dcterms:title
Modelling of Wall Roughness Effect on Turbulent Flows in Turbomachinery Modelling of Wall Roughness Effect on Turbulent Flows in Turbomachinery
skos:prefLabel
Modelling of Wall Roughness Effect on Turbulent Flows in Turbomachinery Modelling of Wall Roughness Effect on Turbulent Flows in Turbomachinery
skos:notation
RIV/68407700:21220/09:00158735!RIV10-GA0-21220___
n3:aktivita
n17:Z n17:P
n3:aktivity
P(FT-TA5/067), P(GA101/07/1508), P(GA103/09/0977), Z(MSM6840770010)
n3:dodaniDat
n19:2010
n3:domaciTvurceVysledku
n20:2257327
n3:druhVysledku
n6:D
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
326881
n3:idVysledku
RIV/68407700:21220/09:00158735
n3:jazykVysledku
n7:eng
n3:klicovaSlova
EARSM model; SST model; turbine cascade; wall roughness
n3:klicoveSlovo
n4:turbine%20cascade n4:wall%20roughness n4:EARSM%20model n4:SST%20model
n3:kontrolniKodProRIV
[A3A397314EA6]
n3:mistoKonaniAkce
Budapest
n3:mistoVydani
Budapest
n3:nazevZdroje
Conference Proceedings
n3:obor
n10:BK
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:projekt
n11:GA101%2F07%2F1508 n11:GA103%2F09%2F0977 n11:FT-TA5%2F067
n3:rokUplatneniVysledku
n19:2009
n3:tvurceVysledku
Kozel, Karel
n3:typAkce
n9:WRD
n3:zahajeniAkce
2009-09-09+02:00
n3:zamer
n12:MSM6840770010
s:numberOfPages
8
n22:hasPublisher
Budapest University of Technology and Economics, Department of Fluid Mechanics
n5:isbn
978-963-420-986-7
n14:organizacniJednotka
21220