LBM simulation of the particle deposition in the children airways with the use of OpenLB

prezentace, poster

en

Aerosol particles like dust involved in the air can pass through the respiratory tract and can be deposited there. The long-term deposition of fine solid particles in the lower airways can stimulate lung diseases. In contrary, for the healing of certain lung diseases, the delivering of medicament’s to the lower airways is important. Computational Fluid Dynamics (CFD) enables to simulate the flow field and the particles deposition in the lungs. By this method, it is possible to identify the probability of reaching particles into the lower airways through the tracheo-bronchial tree. In this poster, the flow field in the child lungs (5-year-old) in a constant sedentary breathing regime was simulated using the Lattice Boltzmann Method (LBM) with the LES Smagorinsky turbulence model. To verify the calculated velocities by LBM in OpenLB software, the finite volume LES Wale simulation in Star-CCM+ was performed. The results showed a good agreement of the fluid flow, some discrepancies were found for deposition of particles. Nevertheless, LBM and OpenLB were proven to be a capable tool to solve the air flow through the respiratory tract is possible to use for particle deposition.

Aerosol particles like dust involved in the air can pass through the respiratory tract and can be deposited there. The long-term deposition of fine solid particles in the lower airways can stimulate lung diseases. In contrary, for the healing of certain lung diseases, the delivering of medicament’s to the lower airways is important. Computational Fluid Dynamics (CFD) enables to simulate the flow field and the particles deposition in the lungs. By this method, it is possible to identify the probability of reaching particles into the lower airways through the tracheo-bronchial tree. In this poster, the flow field in the child lungs (5-year-old) in a constant sedentary breathing regime was simulated using the Lattice Boltzmann Method (LBM) with the LES Smagorinsky turbulence model. To verify the calculated velocities by LBM in OpenLB software, the finite volume LES Wale simulation in Star-CCM+ was performed. The results showed a good agreement of the fluid flow, some discrepancies were found for deposition of particles. Nevertheless, LBM and OpenLB were proven to be a capable tool to solve the air flow through the respiratory tract is possible to use for particle deposition.

Lattice Boltzmann Method, particle deposition, child respiratory tract;

06.06.2022

5th Spring School Lattice Boltzmann Methodswith OpenLB Software Lab, Kraków, Poland

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