Software for incompressible fluid flow simulation based on isogeometric analysis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F16%3A43930436" target="_blank" >RIV/49777513:23520/16:43930436 - isvavai.cz</a>

Result on the web

<a href="http://turbiny.kma.zcu.cz/software-pro-simulaci-nestlacitelneho-proudeni/" target="_blank" >http://turbiny.kma.zcu.cz/software-pro-simulaci-nestlacitelneho-proudeni/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Software for incompressible fluid flow simulation based on isogeometric analysis

Original language description

Software implements numerical solving of Navier-Stokes equations in 3D in computational domains represented by complex shapes with the help of the so-called isogeometric analysis. This method has a lot features common with finite element method. It is based in an isoparametric approach, i.e., the same basis functions are used for the representation of geometry and also for the representation of the approximate solution. For representation of a computational domain, B-spline/NURBS objects are used, which are frequently used in geometric modelling and in many CAD/CAM systems. Software allows to represent the computational domain with one ore more B-spline/NURBS objects, the so-called single-patch or multi-patch domains, respectively. With respect to the quality of connection of B-spline/NURBS patches (conformal or non-conformal computational mesh), reduction of corresponding degrees of freedom or discontinuous Galerkin method is used for connecting B-spline/NURBS patches into one computational domain. Besides standard Dirichlet and Neumann boundary conditions, it is possible to define periodic boundary conditions on the corresponding part of the boundary. Further, it is possible to define rotation of a particular part of the computational domain, e.g. rotation of a runner wheel inside a water turbine. The output is a vector field of velocities and pressure field, the software also allows to export the solution to VTK (Visualization ToolKit) with the consequent visualization of results in free software ParaView. The software was developed in the context of the project TA03011157 "Innovative techniques for improving utility qualities of water turbines with the help of shape optimization based on modern methods of geometric modeling" and was used for fluid flow simulation in Kaplan and Francis turbines in shape optimisation of these turbines.

Czech name

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Czech description

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Type

R - Software

CEP classification

BA - General mathematics

OECD FORD branch

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Project

<a href="/en/project/TA03011157" target="_blank" >TA03011157: Innovative techniques for improving utility qualities of water turbines with the help of shape optimization based on modern methods of geometric modeling</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

C - Předmět řešení projektu podléhá obchodnímu tajemství (§ 504 Občanského zákoníku), ale název projektu, cíle projektu a u ukončeného nebo zastaveného projektu zhodnocení výsledku řešení projektu (údaje P03, P04, P15, P19, P29, PN8) dodané do CEP, jsou upraveny tak, aby byly zveřejnitelné.

Internal product ID

NTIS-VP5-SW001/2016

Technical parameters

Projekt TA03011157, smlouva uzavřena od 1. 1. 2013 do 31. 12. 2016. Kontaktní osoba: Bastl Bohumír, ZČU v Plzni, FAV, NTIS, Univerzitní 8, 306 14 Plzeň, 377 632 655, bastl@kma.zcu.cz.

Economical parameters

Uvedený software je základem vyvinuté optimalizační metody a měl by tak přispět ke zvýšení zisku a konkurenceschopnosti firmy Mavel, a.s.

Owner IČO

49777513

Owner name

Západočeská univerzita v Plzni