Interaction of two axisymmetric bodies falling in tandem at moderate Reynolds numbers

Interaction of two axisymmetric bodies falling side by side at moderate Reynolds numbers

The motion of an axisymmetric body falling in a tube at moderate Reynolds numbers

Axisymmetric bubble pinch-off at high Reynolds numbers.

Analytical considerations and potential-flow numerical simulations of the pinch-off of bubbles at high Reynolds numbers reveal that the bubble minimum radius, rn, decreases as tau proportional to r2n sqrt[1lnr2n], where tau is the time to break up, when the local shape of the bubble near the singularity is symmetric. However, if the gas convective terms in the momentum equation become of the or...

Shock Waves in Transonic Channel Flows at Moderate Reynolds Numbers

The behavior of shock waves in transonic channel flows with varying Reynolds and Prandtl numbers is examined using analytical and numerical methods. It is shown that the location of the sonic line within the structure of a shock wave is independent of the Reynolds number and is coincident with the location of the corresponding discontinuous wave in the limit as the Reynolds number tends to infi...

Sedimentation of Oblate Ellipsoids at low and Moderate Reynolds numbers

In many applications to biophysics and environmental engineering, sedimentation of non-spherical particles for example: ellipsoids, is an important problem. In our work, we simulate the dynamics of oblate ellipsoids under gravity. We study the settling velocity and the average orientation of the ellipsoids as a function of volume fraction. We see that the settling velocity shows a local maximum...