Direct Numerical Simulations of two-phase Taylor-Couette turbulence etc15 Tracking Number 153Presentation: Session: Multiphase and non-Newtonian flows 3 Room: Room D Session start: 15:00 Thu 27 Aug 2015 Vamsi Spandan vamsispandan@gmail.com Affifliation: Physics of Fluids,University of Twente Rodolfo Ostilla-Monico r.ostillamonico@utwente.nl Affifliation: Roberto Verzicco verzicco@uniroma2.it Affifliation: Detlef Lohse d.lohse@utwente.nl Affifliation: Topics: - Turbulence in multiphase and non-Newtonian flows, - Wall bounded flows Abstract: Two-phase Taylor-Couette flow is simulated using the Euler-Lagrange approach, where the dispersed phase is treated as point particles with effective forces such as drag, lift, added mass and buoyancy acting on them. Two-way coupling is implemented between the carrier and the dispersed phase allowing us to study the interaction between the point like particles and the large scale flow structure in the carrier phase. Light buoyant particles are observed to be very effective in disrupting the coherent Taylor rolls, thus reducing the overall dissipation in the system and the overall driving torque. |