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GonzalezNieto_Yague_Cano_Redondo.pdfPresentacion al 9th IWPCTM332,64 kBAdobe PDF Accés restringit

Citació: Lopez, P. [et al.]. The role of initial conditions on mixing efficiency for convective flows. A: 9th International Workshop on the Physics of Compressible Turbulence Mixing. "9th International Workshop on the Physics of Compressible Turbulence Mixing". Cambridge: 2004, p. 300-307.
Títol: The role of initial conditions on mixing efficiency for convective flows
Autor: Lopez Gonzalez-Nieto, Pilar; Yagüe, Carlos; Cano Marchante, Jose Leandro; Redondo Apraiz, José Manuel Veure Producció científica UPC
Data: 24-jul-2004
Tipus de document: Conference report
Resum: Mixing produced in convective flows is investigated comparing three different experiments performed by the authors using brine and fresh water as the two mixing fluids. The initial instabilities are generated by gravitational acceleration and as the flow becomes non-linear the role of local turbulence is examined in experiments of Rayleigh-Taylor driven front occurring across initially sharp density interfaces. The global advance of the fronts is compared with other laboratory experiments and numerical simulations and Mixing Eficiencies are compared and evaluated for a number of different situations with different initial conditions. Using a viscoelastic gel and a plate with holes in experiments similar to those reported by Linden and Redondo (1991), Gonzalez-Nieto ( 2004) the initial instabilities are randomized into a set of plumes in a way in which the initial conditions (viscosity of gel) are seen to modify the overall mixing efficiency.
Dipòsit legal: Cambridge DAMTP
URI: http://hdl.handle.net/2117/9835
Apareix a les col·leccions:DF - Dinàmica No Lineal de Fluids. Ponències/Comunicacions de congressos
Departament de Física Aplicada. Ponències/Comunicacions de congressos
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