Abstract
Standing wave acoustic levitation technique is capable to levitate material using acoustic waves. If a particle is placed around pressure nodes of a standing wave, it experiences a non-zero time-averaged force. Thus, acoustic radiation force acts as a linear spring around pressure nodes and attracts particles towards the pressure nodes. A hollow sphere has larger surface area compared to a solid sphere. Therefore, it undergoes larger acoustic radiation force if the sound field is able to penetrate inside the cavity. In this paper, acoustic levitation of hollow spheres with openings is studied. If a hole is present on the surface, the inner cavity is directly connected to surrounding air. Acoustic radiation force is computed numerically by finite element analysis method and the results are compared with a hollow sphere with no opening. Effect of the location of the hole is investigated. Samples of hollow and hollow-and-holed spheres are manufactured. Standing wave acoustic levitation experiments are carried out using manufactured samples. Numerical and experimental results are comparatively evaluated.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 45th International Congress on Noise Control Engineering |
| ISBN (Electronic) | 978-3-939296-11-9 |
| Publication status | Published - 2016 |
| MoE publication type | A4 Article in a conference publication |
| Event | 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 - Hamburg, Germany Duration: 21 Aug 2016 → 24 Aug 2016 |
Conference
| Conference | 45th International Congress and Exposition on Noise Control Engineering: Towards a Quieter Future, INTER-NOISE 2016 |
|---|---|
| Abbreviated title | INTER-NOISE 2016 |
| Country/Territory | Germany |
| City | Hamburg |
| Period | 21/08/16 → 24/08/16 |