Gañán-Calvo, Alfonso M.Herrada Gutiérrez, Miguel ÁngelGarstecki, Piotr2020-12-112020-12-112006Gañán-Calvo, A.M., Herrada Gutiérrez, M.Á. y Garstecki, P. (2006). Bubbling in Unbounded Coflowing Liquids. Physical Review Letters, 96 (12), 124504-1-124504-4.0031-9007https://hdl.handle.net/11441/103148Article number 124504An investigation of the stability of low density and viscosity fluid jets and spouts in unbounded coflowing liquids is presented. A full parametrical analysis from low to high Weber and Reynolds numbers shows that the presence of any fluid of finite density and viscosity inside the hollow jet elicits a transition from an absolute to a convective instability at a finite value of the Weber number, for any value of the Reynolds number. Below that critical value of the Weber number, the absolute character of the instability leads to local breakup, and consequently to local bubbling. Experimental data support our model.application/pdf4 p.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Coflowing liquidsParametrical analysisWeber numberinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccesshttps://doi.org/10.1103/PhysRevLett.96.124504