Transient studies of G-induced capillary flow

A transient, one-dimensional numerical code is developed to model liquid mo tion in a square groove. Transient body forces up to 0.51 m/s(2) are invest igated. Axial variation in liquid level, shear stress and heat transfer bet ween the groove wall and the liquid, evaporation, and body forces are accou nted for in the model. Dryout and rewet of the groove are allowed; the fron t location is determined using conservation of mass. An experiment is prese nted that measures the depth of liquid in the groove and the dryout and rew et front locations during a transient. Within the uncertainty of the measur ements, the code predicts the correct liquid distribution and front locatio ns.