The observations clearly show that the evaporative mass flux is
directly dependent on the thin-film drained, which is given by
Taylor’ law. It follows therefore that evaporative mass flux can be
obtained directly from hydrodynamics of the thin film formation
without actually discerning the local thermal gradient. From a
practical engineering point of view, such a technique can be
applied for quite a few two-phase devices. For example, the experiments
reported here provide a preliminary basis for calculation of
the local heat transfer coefficients in the evaporator section of a
pulsating heat pipe. Needless to say, more such experiments are
needed to quantify the film behavior under actual operating conditions
of such devices, wherein inertia forces, as well as higher probabilities
of local nucleation, may exist.