INVESTIGATION OF OBLIQUE BREATHER INTERACTIONS

Abstract

 Internal waves play a significant role in mass transport, suggesting one of the essential factors controlling the water environment in an enclosed basin. The recent studies demonstrated the importance and effect of a "breather" on flow in a three-layer fluid; e.g. breathers induce resuspension and mass transport due to the wave breaking over a uniform slope. Thus, we aim to investigate oblique breather interactions in a three-layer system to clarify the characteristics of breathers. As a result, a Mach stem was found to occur due to the two oblique breather interactions, which may be associated with a critical angle.