Lattice Boltzmann Simulation of the Laminar-Turbulent Transition in a Constricted Tube

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU142996" target="_blank" >RIV/00216305:26210/21:PU142996 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Lattice Boltzmann Simulation of the Laminar-Turbulent Transition in a Constricted Tube

Popis výsledku v původním jazyce

Lattice Boltzmann method (LBM) is a mesoscale numerical method suitable for incompressible fluid flow simulations and its popularity has increased in recent years. It is applicable for many engineering applications dealing with fluid flow and the method can be fully parallelised which is beneficial for calculation on CPU clusters or GPUs. In this paper, the LBM is tested on the benchmark geometry of a constricted tube to verify the laminar-turbulent transition, which can appear in many engineering and biological systems (lungs, arteries). The motivation for this study is to identify suitable models for simulation of human airways which consists of several bifurcations and constricted channels. For this research, the CPU cluster Salomon from IT4Innovations was used. The flow regime through a cosine-curved constriction given by Reynolds number 2000 was simulated with the Lattice Boltzmann Smagorinsky subgrid model. To reveal the unsteady flow character, a period of 5 seconds was simulated. The results o

Název v anglickém jazyce

Lattice Boltzmann Simulation of the Laminar-Turbulent Transition in a Constricted Tube

Popis výsledku anglicky

Lattice Boltzmann method (LBM) is a mesoscale numerical method suitable for incompressible fluid flow simulations and its popularity has increased in recent years. It is applicable for many engineering applications dealing with fluid flow and the method can be fully parallelised which is beneficial for calculation on CPU clusters or GPUs. In this paper, the LBM is tested on the benchmark geometry of a constricted tube to verify the laminar-turbulent transition, which can appear in many engineering and biological systems (lungs, arteries). The motivation for this study is to identify suitable models for simulation of human airways which consists of several bifurcations and constricted channels. For this research, the CPU cluster Salomon from IT4Innovations was used. The flow regime through a cosine-curved constriction given by Reynolds number 2000 was simulated with the Lattice Boltzmann Smagorinsky subgrid model. To reveal the unsteady flow character, a period of 5 seconds was simulated. The results o

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA20-27653S" target="_blank" >GA20-27653S: Vliv vývoje plic u novorozenců a dětí na charakteristiky proudění a depozici aerosolů – výpočtové modelování a experimentální validace</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů