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Large amplitude drop shape oscillations
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Trinh, E. H. Wang, T. G. |
| Copyright Year | 1982 |
| Description | An experimental study of large amplitude drop shape oscillation was conducted in immiscible liquids systems and with levitated free liquid drops in air. In liquid-liquid systems the results indicate the existence of familiar characteristics of nonlinear phenomena. The resonance frequency of the fundamental quadrupole mode of stationary, low viscosity Silicone oil drops acoustically levitated in water falls to noticeably low values as the amplitude of oscillation is increased. A typical, experimentally determined relative frequency decrease of a 0.5 cubic centimeters drop would be about 10% when the maximum deformed shape is characterized by a major to minor axial ratio of 1.9. On the other hand, no change in the fundamental mode frequency could be detected for 1 mm drops levitated in air. The experimental data for the decay constant of the quadrupole mode of drops immersed in a liquid host indicate a slight increase for larger oscillation amplitudes. A qualitative investigation of the internal fluid flows for such drops revealed the existence of steady internal circulation within drops oscillating in the fundamental and higher modes. The flow field configuration in the outer host liquid is also significantly altered when the drop oscillation amplitude becomes large. |
| File Size | 1114378 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820015563 |
| Archival Resource Key | ark:/13960/t6g20tb2v |
| Language | English |
| Publisher Date | 1982-03-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Viscosity Damping Microgravity Applications Acoustic Levitation Amplitudes Oils Fluid Dynamics Fluid Flow Oscillations Quadrupoles Drops Liquids Equipment Specifications Bubbles Resonant Frequencies Space Commercialization Flow Distribution Mathematical Models Liquid-liquid Interfaces Silicones Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
