Abstract
Despite the growing use of dry powder inhalers (DPIs) to treat pulmonary diseases, there is limited knowledge of the underlying physical mechanisms of aerosol generation and dispersion. The numerous factors governing dry powder inhalation, such as device design, inhalation flow rate, inspiratory pressures, and formulation properties add to the complexity of these mechanisms. In order to understand DPI aerosol performance comprehensively, it is essential to investigate the fluid-dynamic characteristics of the inhalation flow generated from the device, as these are closely related to each other. This investigation is carried out experimentally using particle image velocimetry (PIV), and the results used to explain those from complementary in-vitro deposition experiments. PIV enables measurement of the instantaneous two component–two dimensional
(2C–2D) velocity field with high spatial and temporal resolutions, and thus provides a quantitative description of the real flow characteristics.
(2C–2D) velocity field with high spatial and temporal resolutions, and thus provides a quantitative description of the real flow characteristics.
Original language | English |
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Title of host publication | Respiratory Drug Delivery 2021 |
Editors | R. N. Dalby, J. Peart, J. D. Suman, P. M. Young, D. Traini |
Place of Publication | Richmond, VA |
Publisher | RDD Online |
Pages | 203-208 |
Number of pages | 6 |
Volume | 1 |
ISBN (Electronic) | 9781942911555 |
Publication status | Published - 2021 |
Externally published | Yes |
Event | Respiratory Drug Delivery 2021 - Virtual Duration: 4 May 2021 → 7 May 2021 |
Conference
Conference | Respiratory Drug Delivery 2021 |
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Abbreviated title | RDD 2021 |
City | Virtual |
Period | 4/05/21 → 7/05/21 |
Keywords
- dry powder inhaler (DPI)
- particle image velocimetry (PIV)
- in-vitro deposition
- aerosol performance
- swirling flow