Stabilisation of a plane liquid sheet by gas flow: experiments and theory
(English)Manuscript (Other academic)
The stability of a plane liquid jet is studied experimentally and theoretically. The main emphasis is on the effect of the surrounding air. Co-blowing with a gas velocity of the same order of magnitude as the liquid velocity is studied. Experimental results are obtained and the growth rates of the disturbances are found to be within 20\% of the values obtained from local spatial stability analysis. The effect of different parameters of the gas flow on the stability of the jet is scrutinized and it is concluded that the predicted disturbance growth is mostly sensitive to the shear from the air on the liquid surface and the velocity difference between the water and the air.
The overall disturbance growth and wavelength scales with the difference between the gas and liquid velocity.
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-10186OAI: oai:DiVA.org:kth-10186DiVA: diva2:210100
QC 201011022009-04-012009-03-302010-11-02Bibliographically approved