A multidomain boundary element method for two equation turbulence models

Ramšak, Matjaž; Škerget, L.

doi:10.1016/j.enganabound.2005.07.007

Cited by 15 publications

(9 citation statements)

References 26 publications

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“…Future work will include two standard examples, e.g. fully developed turbulent flow [13][14][15] in channel and turbulent backward facing step flow [16], to test the proposed numerical algorithm. The nonlinearity of low Reynolds models is very severe and special attention will have to be paid to obtain convergence numerical solution.…”

Section: Resultsmentioning

confidence: 99%

Solution of velocity-vorticity URANS by BEM

Škerget¹,

Ravnik²

2010

Boundary Elements and Other Mesh Reduction Methods XXXII

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This paper describes the fundamental aspects of turbulence modelling for incompressible fluid flow and corresponding numerical models based on the boundarydomain integral equations. The velocity-vorticity formulation of the Reynolds averaged Navier-Stokes (RANS) equations is used, while the averaged pressure field is determined by solving the Poisson velocity equation. Several lowReynolds-number turbulent models, e.g. Launder-Sharma, are applied.

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Section: Resultsmentioning

confidence: 99%

Solution of velocity-vorticity URANS by BEM

Škerget¹,

Ravnik²

2010

Boundary Elements and Other Mesh Reduction Methods XXXII

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“…When dealing with nonlinear transport problems the subdomain technique must be used to apply different constant diffusivities to each subdomain. The second reason for applying the subdomain or multidomain model is to cut the storage and CPU time requirements of the single domain BEM approach [5,7,13]. The heat energy, moisture and pressure governing equations represent a coupled nonlinear systems of equations that can only be solved iteratively.…”

Section: Numerical Algorithmmentioning

confidence: 99%

“…This can be efficiently overcome by the subdomain or macro element approach, which yields a sparse system similar to the domain type numerical models [7], while maintaining the accuracy and stability of the numerical algorithm. The discretization used in this paper leads to an overdetermined system of equations [12,13].…”

Section: Introductionmentioning

confidence: 99%

BEM simulation model for coupled heat, moisture and air transport through a multilayered porous wall

Škerget¹,

Tadeu²,

Ravnik³

2015

WIT Transactions on Modelling and Simulation

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Unsteady coupled air, moisture and heat energy flow through a porous solid is simulated numerically using a boundary element model (BEM). The governing transport equations are written and solved for the continuous driving potentials, i.e. relative humidity, temperature and air pressure. The moisture redistribution inside a wall with capillary active interior insulation is analysed to illustrate the applicability and accuracy of the proposed numerical model.

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“…Their idea of using DDM was motivated by the work of Kansa and Carlson [10] on the RBFs for which they indicated that the best accuracy was achieved when the original domain was split into a number of non-overlapping subdomains. Following the work of Popov and Power the application of DDM in the DRM has been developed for many applications [17,5,7,6,18,15].…”

Section: Introductionmentioning

confidence: 99%