Common modal decomposition techniques for flowfield analysis, data-driven modeling and flow control, such as proper orthogonal (POD) dynamic mode (DMD) are usually performed in an Eulerian (fixed) frame of reference with snapshots from measurements or evolution equations. The description poses some difficulties, however, when the domain mesh deforms time as, example, fluid-structure interaction...

A new approach to cosmological hydrodynamics is discussed which is based on a moving, quasi-Lagrangian mesh. The softened Lagrangian hydrodynamics (SLH) method utilizes a high resolution Lagrangian hydrodynamic code combined with a low resolution Eulerian solver to deal with severe mesh distortions. Most of the volume of a simulation is treated with the Lagrangian code and only in sites where t...

Combining heavy quark effective theory and the chiral Lagrangian approach we investigate radiative decays of pseudoscalar D mesons. We first reanalyse D∗ → Dγ decays within the effective Lagrangian approach using heavy quark spin symmetry, chiral symmetry Lagrangian, but including also the light vector mesons. We then investigate D → V γ decays and calculate the D → K̄∗0γ and D → ργ partial widt...