Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 1084365

Block-Coupled Solution Algorithms for 2-equation Turbulence Models


Keser, Robert
Block-Coupled Solution Algorithms for 2-equation Turbulence Models, 2016., diplomski rad, diplomski, Fakultet strojarstva i brodogradnje, Zagreb


CROSBI ID: 1084365 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Block-Coupled Solution Algorithms for 2-equation Turbulence Models

Autori
Keser, Robert

Vrsta, podvrsta i kategorija rada
Ocjenski radovi, diplomski rad, diplomski

Fakultet
Fakultet strojarstva i brodogradnje

Mjesto
Zagreb

Datum
25.03

Godina
2016

Stranica
110

Mentor
Jasak, Hrvoje

Ključne riječi
CFD ; OpenFOAM ; foam-extend ; turbulence modelling ; k − ε ; k − ω SST ; block- matrix ; implicit coupling ; linearisation ; validation ; benchmarking

Sažetak
Modern implicitly coupled pressure–velocity algorithms introduced a considerable increase in the convergence rates when compared with segregated algorithms. Although, segregated treatment of turbulence model equations often limits such algorithms from reaching their full potential. Hence, implicit coupling of two- equation turbulence models is investigated. In order to implement the implicitly coupled turbulence models in the block-matrix framework, it is necessary to linearise the non-linear source and sink terms. The linearised sources and sinks also need to undergo the stability and boundedness analysis. Linearisation and implementation of two-equation turbulence models, k-epsilon and k-omega SST, in foam-extend (the community-driven fork f the OpenFOAM) software is presented. Validation of implemented turbulence models is performed. The two validation cases are: a separated flow past a NACA 4412 airfoil at maximum lift and an incompressible turbulent flow over a backward facing step. Validation of the implicitly coupled k-omega SST model is performed for both cases, whereas validation of the implicitly coupled k-epsilon model is performed only for the backward facing step case. Finally, performance of implemented turbulence models is compared with existing segregated models. Benchmarking is performed on the two validation cases. Similarly as for the validation, both implemented turbulence models are benchmarked on the backward facing step case and only the k- omega SST is benchmarked on the NACA 4412 case.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Ustanove:
Fakultet strojarstva i brodogradnje, Zagreb

Profili:

Avatar Url Robert Keser (autor)

Avatar Url Hrvoje Jasak (mentor)

Citiraj ovu publikaciju

Keser, Robert
Block-Coupled Solution Algorithms for 2-equation Turbulence Models, 2016., diplomski rad, diplomski, Fakultet strojarstva i brodogradnje, Zagreb
Keser, R. (2016) 'Block-Coupled Solution Algorithms for 2-equation Turbulence Models', diplomski rad, diplomski, Fakultet strojarstva i brodogradnje, Zagreb.
@phdthesis{phdthesis, author = {Keser, R.}, year = {2016}, pages = {110}, keywords = {CFD, OpenFOAM, foam-extend, turbulence modelling, k − ε, k − ω SST, block- matrix, implicit coupling, linearisation, validation, benchmarking}, title = {Block-Coupled Solution Algorithms for 2-equation Turbulence Models}, keyword = {CFD, OpenFOAM, foam-extend, turbulence modelling, k − ε, k − ω SST, block- matrix, implicit coupling, linearisation, validation, benchmarking}, publisherplace = {Zagreb} }




Contrast
Increase Font
Decrease Font
Dyslexic Font