Criticism Of The Classical Mass Balance For
Multiphase Flow
Author(s)
F.J. Collado
Abstract
The key point in multiphase flows is that the phases have different velocities.
Being velocity the space-time ratio, it is impossible that the phases spend the
same time in traveling the same distance i.e., the length of the control volume.
Hence, the time scale of any phase should be different from the other ones. As a
main consecuence any of the phase velocities could be the global velocity of the
multiphase flow. This important result is readily demonstrated following two
equivalent procedures: the first one, based on the total mass conservation in the
domain, uses new control volumes of variable length which follows any of the
velocity fields present in the domain; the second way proposes the strict
application of the classic Reynolds theorem but to a moving and deforming
control volume. Whilst it is clearly shown that the classi
Keywords
Related Book
Other papers in this volume
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Code
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