I am at my wits end with this problem. I will probably just go with this answer and hope the back of the book is wrong. If anyone has some suggestions otherwise, that would be great. Thanks again.
That's what I did. Acted as if it were a rectangular cube, and then subtracted the area of the cylinder. This gives me 14,664.5N when converted to a force.
I thought about that too, Chet. I tried to calculate the force by finding the volume of the water above the arc (as if there was water there), finding it's weight, and the force. This also gives me the wrong answer. I am starting to wonder if the answer in the back of the book is wrong. They get...
"The vertical component of pressure force on a curved surface equals in magnitude
and direction the weight of the entire column of fluid, both liquid and atmosphere,
above the curved surface."
This is from my textbook, and is adding to my confusion, because in this problem the surface...
This is true, but I'm not sure what else to do with your suggestion, as I feel I already tried that. The vertical component of the force would act on the horizontal plane of the bottom of the quarter-circle, so wouldn't the cp and cg coincide for that case?
Well, I changed the Zcg to be the entire radius of the quarter-circle, as this would put it at the depth of the bottom of the circle, whereas for the horizontal component was the radius/2.
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This is the problem here. I am having trouble making progress on this problem after getting the wrong answer for the vertical hydrostatic force.
The equations I am using are: fx=...
Thanks for all your help! I did get the project finished by the way. I figured I should jump back on here and give you an update. I ended up doing it all in excel, and it may be a little dumbed down but everything behaves as it should when I draw flow from different areas in the line. Thanks again!
Yeah, this is definitely a complicated project. As an intern they mainly want me to get a pretty decent, "rough" estimate. But I'm trying to make it as accurate as possible and also learn something along the way. I am working for a rather large company and do have access to some pipe-system...
Thanks your replying again. The fitting I am thinking of is called a weldment I believe. I guess I am really dealing with hose in some sections and tubes in other sections, so the fittings aren't typical threaded type pipe fittings but instead are more like hose connectors and couplings. I will...
Thanks for all the help SteamKing. I think I have the Excel spreadsheet working now after looking over everything you had helped me with. I did some test calculations like the one you posted of 100 feet of steel pipe and got the same result, along with a few other calculations I had done by...
Awesome! Thanks man. The only number that was different for me was velocity, but if I do a hand calc. I get the same value as you do, so I will check my velocity calculation. 1 psi for a 100 foot pipe seems very reasonable to me.
One thing that I still have a question about though is the...
Wow, thank you so much for posting all that great information. One thing though, the flow that I calculated in in3/s is 15.4, not the velocity. The velocity was something like 72 in/sec. But after just thinking about my math on that 72 in/sec seems like way too much... maybe that's where part of...