TURBULENCE MODULATION IN PARTICLE LADEN PIPE FLOW: EXACT REGULARIZED POINT PARTICLE METHOD etc15 Tracking Number 362Presentation: Session: Multiphase and non-Newtonian flows 4 Room: Room D Session start: 10:30 Fri 28 Aug 2015 Francesco Battista francesco.battista@uniroma1.it Affifliation: University of Rome 'La Sapienza' Roberta Messina roberta.me86@gmail.com Affifliation: University of Rome 'La Sapienza' Paolo Gualtieri paolo.gualtieri@uniroma1.it Affifliation: University of Rome 'La Sapienza' Carlo Massimo Casciola carlomassimo.casciola@uniroma1.it Affifliation: University of Rome 'La Sapienza' Topics: - Turbulence in multiphase and non-Newtonian flows, - Wall bounded flows Abstract: Many technological applications are characterized by turbulent bounded flows with dispersed particles. For high mass load (particle/fluid mass ratio) a significant inter-phase momentum exchange occurs (two-way coupling regime), inducing a significant alteration of the turbulent field which, in turn, modifies the dynamics of the suspended phase. Aim of the present study is exploring the potentially of recently developed momentum coupling method, dubbed the Exact Regularized Point Particle (ERPP) method, in reproducing via Direct Numerical Simulation (DNS) the detailed dynamics of a particles laden turbulent pipe flow. The comparison with available experimental and numerical data confirms the ability of the new approach in reproducing the relevant dynamics also in parameter ranges which are unaccessible to standard techniques. |