A time semi-implicit scheme for the energy-balanced coupling of a shocked fluid flow with a deformable structure
TypeArticles dans des revues avec comité de lecture
The objective of this work is to present a conservative coupling method between an inviscid compressible fluid and a deformable structure undergoing large displacements. The coupling method combines a cut-cell Finite Volume method, which is exactly conservative in the fluid, and a symplectic Discrete Element method for the deformable structure. A time semi-implicit approach is used for the computation of momentum and energy transfer between fluid and solid, the transfer being exactly balanced. The coupling method is exactly mass-conservative (up to round-off errors in the geometry of cut-cells) and exhibits numerically a long-time energy-preservation for the coupled system. The coupling method also exhibits consistency properties, such as conservation of uniform movement of both fluid and solid, absence of numerical roughness on a straight boundary, and preservation of a constant fluid state around a wall having tangential deformation velocity. The performance of the method is assessed on test cases involving shocked fluid flows interacting with two and three-dimensional deformable solids undergoing large displacements.
Showing items related by title, author, creator and subject.
REYT, Ida; BAILLIET, Hélène; MOREAU, Solène; VALIERE, Jean-Christophe; BALTEAN-CARLES, Diana; WEISMAN, Catherine; DARU, Virginie (Acoustic Society of America, 2013)Rayleigh streaming in a cylindrical acoustic standing waveguide is studied both experimentally and numerically for nonlinear Reynolds numbers from 1 to 30. Streaming velocity is measured by means of laser Doppler velocimetry ...
DULUC, Marie-Christine; DARU, Virginie; ELAYYADI, Isam; LE QUÉRÉ, Patrick (Société Française de Thermique / Congrès Français de Thermique, 29 mai - 1 juin 2007, Île des Embiez, 2007)On étudie numériquement une configuration diphasique monodimensionnelle assimilable à un actuateur thermique de petites dimensions dans laquelle deux lames d'air sont séparées entre elle par une lame d'eau liquide. On ...
KAPRIELIAN, Leslie; DEMOULIN, Marc; CINNELLA, Paola; DARU, Virginie (2013)Quasi-dimensional models are needed in early design stages to evaluate engines sizing. They are based on principles of Thermodynamics and experimental correlations. Here, we improve the accuracy of the classical quasi-dimensional ...
DARU, Virginie; BALTEAN-CARLES, Diana; WEISMAN, Catherine; DEBESSE, Philippe; GANDIKOTA, Gurunath (Elsevier, 2013)Numerical simulations of compressible Navier–Stokes equations in closed two-dimensional channels are performed. A plane standing wave is excited inside the channel and the associated acoustic streaming is investigated for ...
BRUNEAU, Marina; DURUPT, Alexandre; VALLET, Laurent; ROUCOULES, Lionel; PERNOT, Jean-Philippe (2016)Several approaches exist to provide Reverse Engineering solutions on mechanical parts. Mechanical assemblies and the expertise information retrieved at the same time with the model geometry are not really taken into account ...