Recent content by starcus

Thank you Chet! Your help is invaluable to me. I have a couple follow up questions if you have the time: actually I have noted in similar problems that the static component does not affect the overall pressure in the fluid if the pipe is horizontal, but why is this? Gravity is still acting...

Hi there, sorry for replying slowly again I got a burst of school assignments. I think the fluid pressure at points x=0 and x=l should be the same at time t=0. If the piston is applying the force F to the column of fluid, my guess for the pressure in the fluid would be p=\frac{F}{πr^{2}}+ρgh...

Chestermiller, could you maybe guide me through putting up a model for the following situation: We have a horizontally oriented pipe of radius r and length l containing a column of fluid with density ρ. This fluid is accelerated by a piston acting on the fluid with the force F. How can...

Hi again Chet, thank you very much for your detailed solutions. The reason for me not responding in a while is that the calculus is simply a little bit to advanced for me and that made me loose track. However, I understand the steps in your analysis briefly and I will try to think it through...

Ah, this is starting to look interesting! From what I can tell, we now want to know how the pressure varies depending on its velocity, or \frac{dp}{dv}, but the change in pressure with change in velocity is already inherent in the force balance? Since it contains the acceleration a? F=ρgAΔx...

Chet, this was exactly the answer I was hoping for! That there is "only one pressure" and I would be ever thankful if you could guide me through this. From my limited knowledge of physics, the answer to the problem you described is the expression for static pressure p=ρgh. Where h is the height...

What is the relation between the pressure that is exerted on the internal walls of a cylinder and the characteristics of a flow of water running inside it? Let's assume that the flow velocity is constant and that we have an inviscid flow of pipe flow type. Furthermore let's assume that the...