Generation Of Capillary Waves Research Articles

On the possibility of simultaneous generation of capillary waves by means of laser pulses on both sides of a steel plate

Tout en etudiant la possibilite de durcir la surface de l'acier 18H 2N4 WA, en utilisant la nitrification par laser, on a observe une structure annuaire sur la surface de la cible sur les 2 faces, ou la lumiere tombe. On a utilise ici un laser au verre neodyme fonctionnant en regime de generation ordinaire comme source d'impulsions lumineuses et on a observe un echantillon en acier 18H 2N4 WA ayant la forme d'un anneau. L'echantillon a ete irradie dans une chambre construite dans ce but en azote, la pression allant de 5 a 100 atm

A note on the generation of capillary waves by steep gravity waves: The effect of wind growth

Longuet‐Higgins' (1963) theory for the generation of capillaries by a steep gravity wave is generalized to the case of wind. Wind growth enhances the steepness of the crest‐generated capillaries, and their maximum steepness now occurs further away from the crest. Implications to remote sensing are discussed.

The generation of capillary waves by steep gravity waves : Longuet-Higgins, M. S., 1963. J. Fluid Mech., 16 (1): 138–159

The generation of capillary waves by steep gravity waves : Longuet-Higgins, M. S., 1963. J. Fluid Mech., 16 (1): 138–159

The generation of capillary waves by steep gravity waves

A theory is given for the non-linear transfer of energy from gravity waves on water to capillary waves. When a progressive gravity wave approaches its maximum steepness it develops a sharp crest, at which the surface tension must be locally important. This gives rise to a travelling disturbance which produces a train of capillary waves ahead of the crest, i.e. on the foward face of the gravity wave. The capillary waves, once formed, then take further energy from the gravity wave through the radiation stresses, at the same time losing energy by viscosity.The steepness of the capillary waves is calculated and found to be in substantial agreement with some observations by C. S. Cox. An approximate expression for the ripple steepness near the crest of the gravity wave is where T’ is the surface tension constant and K Is the curvature at the wave crest. The ripple steepness also varies with distance from the wave crest.Under favourable circumstances the dissipation of energy by the capillary waves can be many times the dissipation in the gravity waves. The capillary waves may therefore play a significant role in the generation of waves by wind, in that they tend to delay the onset of breaking.