An experimental study on 'flower'wave induced by thermocapillary convection and single point surface deformation features for thin fluid layers in open annular pool

摘要

This work reveals seven kinds of surface "flower" waves and one hydrothermal wave pattern induced by thermocapillary convection with the test fluid KF96-1 silicone oil in an open annular pool.The configuration of those "flower" waves is researched via experiments using inferred technique.m=0 and m=6 are found to be the most possible models arising in succession when the layer thickness h is enlarging.It is clear to see the thicker the flow layer is, the larger Marangoni stress needed to form m=0 and m=6 oscillatory models when 0.3