3 papers
physics.flu-dyn2025
The initial acceleration of a buoyant spherical bubble revisited
Dieter Bothe, Jun Liu, Pierre-Etienne Druet +3
An analytical derivation of the buoyancy-induced initial acceleration of a spherical gas bubble in a host liquid is presented. The theory makes no assumptions further than applying…
physics.flu-dyn2024
Compressibility and volume variations due to composition in multicomponent fluids
Pierre-Etienne Druet
For single components fluids, vanishing isothermal compressibility implies that the mass density is constant, but the same conclusion is unknown for multicomponent fluids. Here the…
math.PR2024
Persistence exponents via perturbation theory: MA(1)-processes
Frank Aurzada, Dieter Bothe, Pierre-Ãtienne Druet +2
For the moving average process , , where and is an i.i.d. sequence of normally distributed random variable…