flow through expansion of pipe why it must fill all area of cross section of pipe at steady state
flow through expansion of pipe why it must fill all area of cross section of pipe at steady state
(OP)
in a flow through expansion of pipe suddenly , why does fluid expand whole pipe,at steady flow it fills whole pipe and velocity decreases. why cant fluid flow straight without filling entire cross section as it did before keeping the air above or below which is at the same pressure and exit without change in velocity.
when air gets disturbed also as it has space to flow without being disturbed why does it fills and reaches steady state.
i want to know why and how it happens as it attains steady state.
when air gets disturbed also as it has space to flow without being disturbed why does it fills and reaches steady state.
i want to know why and how it happens as it attains steady state.





RE: flow through expansion of pipe why it must fill all area of cross section of pipe at steady state
RE: flow through expansion of pipe why it must fill all area of cross section of pipe at steady state
2.) It does not have to, if there is air present at that location.
3.) It must because, there is no air present at that location and the pressure is greater than the water's vapor pressure. Therefore the water will not vaporize to fill the entire diameter.
4.) It must because, the hydraulic grade line; total energy of the water at that point, is greater than the energy required to fill the pipe.
5.) It does not have to, when the hydraulic grade line is lower than the top of the pipe. There is only enough energy to fill the pipe part way.
Independent events are seldomly independent.