Take the tour ×  Similar question has been asked but did no get
good answers.  We know that black hole can confine light, but
can we create an ocean black hole - which can confine surface
water waves or sound waves in water?     • What is a static
water flow which can CONFINE water waves?   • Is there a
configuration confining only surface waves?   • Is there a
configuration confining volume waves?   Inside a confined region
any water density perturbations can not propagate outside.     •
Overall volume of water in the "tank" can not change so the
solution when the water is removed faster then the waves travel
is ruled out.   • There possibly can be additional objects
presented in the water "tank".   • It can be some unsual liquid
or gas, whith additional "new" properties.  Thanks for your
answers.  share|improve this question What is part 1 of the
question, could you give a link to it? And I'm not sure if I
understand what you are asking about. Do you want to know if for
the fluid flows you describe, somethi