Answer by Ankit for Can a fluid approach the speed of light according to the...
I recieved a lot of great answers.But I came up with an idea this morning (which I would like to share) which I would like to share (actually I need to know whether this kind of reasoning is right or...
View ArticleAnswer by Michael Seifert for Can a fluid approach the speed of light...
One thing not pointed out in the above answers is that if a fluid was truly "incompressible", it would violate special relativity. This is because the speed of sound in a fluid can be derived from its...
View ArticleAnswer by ttonon for Can a fluid approach the speed of light according to the...
One must look at all relevant equations when discussing what's possible or what's doable. In this case, you must look also at the momentum equation, which is Newton's Law, and when you do, you see that...
View ArticleAnswer by Rick for Can a fluid approach the speed of light according to the...
That is one version of the continuity equation for sure. But that is not the most general one. As a matter of fact, that condition can be deduced from the incompressibility of a fluid as in a limit of...
View ArticleAnswer by Deep for Can a fluid approach the speed of light according to the...
You can check your hypothesis by closing the mouth of a pipe (from which water is flowing out) to different degrees. You will find that the flow velocity increases initially as the outlet area is...
View ArticleAnswer by Dale for Can a fluid approach the speed of light according to the...
That simplified form of continuity equation assumes that the fluid is incompressible. That is only a valid assumption at low Mach numbers. I think a typical “rule of thumb” is that a Mach number less...
View ArticleCan a fluid approach the speed of light according to the equation of continuity?
We all are well aware with the equation of continuity (I guess) which is given by:$$A_1V_1= A_2V_2$$Where $A_1$ and $A_2$ are any two cross sections of a pipe and $V_1$ and $V_2$ are the speeds of the...
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