β Scribed by R.W. Faidley; R.L. Panton
No coin nor oath required. For personal study only.
IILiquid jet instability was first formally analyzed by Rayleigh over 100 years ago and has since been the subject of a number of investigations. The experimental study reported here took advantage of the fact that the surface tension of water is temperature-dependent and employed a small, fast-responding heater in the orifice of a nozzle to modulate the surface tension along a jet of water issuing into air. This excitation technique produced a regular instability whose growth rates were then measured with a laser measurement technique. Measured growth rates of this thermally excited jet were found to substantially agree with Rayleigh's linear stability theory and with growth rates measured in the same facility from acoustically excited jets.
π SIMILAR VOLUMES
The maximum liquid drop volume (v(max)) is measured by using a back-suction micrometer syringe piston technique. Different very viscous liquids are measured by (v(max)) and (v(f)) methods to observe the effect of viscosity on tension measurement. No apparent viscosity effect was observed in surface