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Original title:
Numerical study of the steady airflow in the human respiratory system during inhaling and exhaling
Authors: Lancmanová, Anna ; Bodnár, Tomáš
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2024, Prague (CZ), 20240221
Year: 2024
Language: eng
Abstract: This paper presents some of the initial results of the numerical simulations of a steady turbulent flow in human upper airways during inhalation and exhalation. The mathematical model is based on the system of Reynolds-Averaged incompressible Navier-Stokes equations complemented by the SST k − ω turbulence model. The simulations were performed using finite-volume open source solver OpenFOAM on a realistic three-dimensional geometry. The main aim of this particular study is to verify the computational setup with special focus on appropriate choice and implementation of boundary conditions. The prescribed boundary conditions are chosen to mimic the physiological conditions during normal breathing cycle. This study aims to gain an insight into the airflow behavior during the inhalation and exhalation process by comparing the results of two distinct simulations corresponding to two different (opposite) flow rates . The obtained local flow rates and flow fields for both cases are presented and mutually compared. This initial work should serve as a foundation for future more complex simulations that will include the time-dependent and compressible effects.
Keywords: human airways; incompressible Navier-Stokes; OpenFOAM
Project no.: AP2101
Funding provider: AV ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-88-8, ISSN 2336-5781
Note: Související webová stránka: https://doi.org/10.14311/TPFM.2024.017
Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351296
Permalink: http://www.nusl.cz/ntk/nusl-541543
The record appears in these collections:
Research > Institutes ASCR > Institute of Mathematics
Conference materials > Papers
Authors: Lancmanová, Anna ; Bodnár, Tomáš
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2024, Prague (CZ), 20240221
Year: 2024
Language: eng
Abstract: This paper presents some of the initial results of the numerical simulations of a steady turbulent flow in human upper airways during inhalation and exhalation. The mathematical model is based on the system of Reynolds-Averaged incompressible Navier-Stokes equations complemented by the SST k − ω turbulence model. The simulations were performed using finite-volume open source solver OpenFOAM on a realistic three-dimensional geometry. The main aim of this particular study is to verify the computational setup with special focus on appropriate choice and implementation of boundary conditions. The prescribed boundary conditions are chosen to mimic the physiological conditions during normal breathing cycle. This study aims to gain an insight into the airflow behavior during the inhalation and exhalation process by comparing the results of two distinct simulations corresponding to two different (opposite) flow rates . The obtained local flow rates and flow fields for both cases are presented and mutually compared. This initial work should serve as a foundation for future more complex simulations that will include the time-dependent and compressible effects.
Keywords: human airways; incompressible Navier-Stokes; OpenFOAM
Project no.: AP2101
Funding provider: AV ČR
Host item entry: Topical Problems of Fluid Mechanics, ISBN 978-80-87012-88-8, ISSN 2336-5781
Note: Související webová stránka: https://doi.org/10.14311/TPFM.2024.017
Institution: Institute of Mathematics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0351296
Permalink: http://www.nusl.cz/ntk/nusl-541543
The record appears in these collections:
Research > Institutes ASCR > Institute of Mathematics
Conference materials > Papers
Record created 2024-03-10, last modified 2024-09-22