Abstract
Chronic wounds necessitate periodic treatment and management due to their potential for serious complications. Recently, ultrasonic mist therapy has been introduced to treat chronic wounds efficiently. This therapy requires a noncontact spraying method to prevent side effects such as bacterial infections and pain. Therefore, research is needed on a spray nozzle tip that can effectively transmit ultrasonic energy to the wound target with misted cleaning solution mobility in a specific direction and at an appropriate speed. The performance of the nozzle tip is greatly affected by the flow characteristics inside it. Computational fluid dynamics (CFD) is a powerful tool to analyze these characteristics in detail. The behavior of the mist was analyzed in a simulation based on discrete phase model methodology in an unsteady state. Valid design parameters enabling noncontact cleaning were determined by setting the design parameters of the nozzle tip`s internal flow path and measuring the spraying speed of the mist using CFD analysis. Through the simulation results, information on the sprayed skin surface and spray characteristics are measured. Lastly, we present a nozzle tip design guide optimized for ultrasonic mist therapy.
Translated title of the contribution | Improvement of Nozzle Tip Performance for Noncontact Medical Ultrasonic Mist Spraying |
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Original language | Korean |
Pages (from-to) | 489-496 |
Number of pages | 8 |
Journal | Journal of the Korean Society for Precision Engineering |
Volume | 41 |
Issue number | 6 |
DOIs | |
State | Published - 2024 |
Keywords
- Computational fluid dynamics
- Discrete phase model
- Noncontact spraying
- Nozzle tip
- Ultrasonic mist therapy