Identifying rotation and oscillation in surface tension measurement using an oscillating droplet method |
| |
| Authors: | Shumpei Ozawa Takuro Koda Masayoshi Adachi Suguru Shiratori Noriaki Takenaga Taketoshi Hibiya Masahito Watanabe |
| |
| Affiliation: | 1. Department of Aerospace Engineering, Tokyo Metropolitan University, Japan;2. Department of Physics, Gakushuin University, Japan;3. Department of Aerospace Engineering, Tokyo Metropolitan Institute of Technology, Japan;4. System Design and Management Research Center, Keio University, Japan |
| |
| Abstract: | We proposed a new approach to identify the frequencies of droplet rotation and m=±2 oscillation that degrade the accuracy of surface tension measurement by an oscillating droplet method. Frequencies of droplet rotation and m=±2 oscillation can be identified by a phase unwrapping analysis of time dependence of the deflection angle for the maximum diameter of the droplet image observed from above. The present method was validated, using test data with given frequencies. © 2008 Wiley Periodicals, Inc. Heat Trans Asian Res, 37(7): 421–430, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.20214 |
| |
| Keywords: | surface tension oscillating droplet method phase unwrapping method electromagnetic levitation Rayleigh's theory spherical harmonics droplet rotation |
|
|
