for λ - IfB

Sedimentation• Sedimentation ist the descent ofparticles in a fluid due to the action ofgravity.• The interaction between the particlesand the fluid is given by the conditionthat the velocity of the fluid on theentire surface of each particle is equalto the velocity of this particle.• Measure settling velocity, i.e.velocity of the upper front.• If particles are of different speciesthen one has several fronts.• Open question: size dependence ofthe density fluctuations.SedimentationGlass beadsdescendingin silicon oilusing penaltymethod withMAC gridcomparing experiment and simulation