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

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Lattice Boltzmann Simulation of the Laminar-Turbulent Transition in a Constricted Tube
Original language description
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
Czech name
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Czech description
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Project
<a href="/en/project/GA20-27653S" target="_blank" >GA20-27653S: Influence of infants and children lungs development on flow field and aerosol deposition– computational modelling and experimental validation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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