The dynamics of elasto-inertial turbulence is investigated numerically from the perspective of the coupling between polymer dynamics and flow structures. In particular, direct numerical simulations of channel flow with Reynolds numbers ranging from 1000 to 6000 are used to study the formation and dynamics of elastic instabilities and their effects on the flow. Based on the splitting of the pressure into inertial and polymeric contributions, it is shown that the trains of cylindrical structures around sheets of high polymer extension that are characteristics to elasto-inertial turbulence are mostly driven by polymeric contributions.
|Title of host publication||International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013|
|Publication status||Published - 1 Jan 2013|
|Event||Turbulence and Shear Flow Phenomena 2013 - École Nationale Supérieure de Mécanique et d'Aérotechnique, Poitiers, France|
Duration: 28 Aug 2013 → 30 Aug 2013
Conference number: 8th
|Name||International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2013|
|Conference||Turbulence and Shear Flow Phenomena 2013|
|Period||28/08/13 → 30/08/13|
|Other||The series of biennial TSFP Symposia is the principal venue for reporting and|
disseminating recent and ongoing research on turbulence and shear flow phenomena.