Recent content by JackofallMech

Has anyone used Inventors built in FEA? How limited is it's FEA capabilities?

instantaneous a=4720/[1+(K(DR-2)/E)]^2 to go into deltP=density*a*deltaV where K=bulk modulus of fluid, DR dimension ratio HDPE, E modulus of elasticity versus noninstantaneous P=(0.070*V*L/t)+Pi where V=velocity, L=piple length, t=valve closure time, Pi=initial pressure. Regards

It appears as though there are two different formula's for water hammer. One considers the pressure wave that travels down the pipe due to an instantaneous shock and the other considers pressure rise due to rate of closure of a valve which does directly take into consideration the mass of the...

How does the equation for water hammer surge pressure take into account the mass of the fluid being stopped? I would think that the greater the body of water being stopped the greater the pressure. yet the formula only seems to consider the change in velocity regardless of the mass of fluid...

CADworx rejects my Solidworks .sat file immediately. Can anyone recommend some steps to translating between these to two software.

I am looking to specify ball mill discharge size for ground lime to be added to process water. Does an 85% minus 200 mesh make sense? Please comment.

Biginch Do you have any refences that you could recommend for calculating surge forces that I can apply to stress analysis? I would think the pump manufacturer should have some of the info I need.

Thank Biginch Now that I understand the lingo a little better. Is surge analysis common practice for determining pipe stresses? Do most pumps create a pressure pulse at start-up that can be a cause for concern or is it usually insignificant when compared to stresses on an up and operating...

Sorry Biginch I read your comments a second time and realized that you did address the axial thrust. regards

Is there usually an initial pulse force generated by the fluid when the pump kicks on and acceleratates the fluid from rest, getting it up to speed? When I was talking about a thrust I was actually thinking in the axel direction rather than torsional. thanks for you input though

In pipe stress analysis is it typical to take into consideration pump start-up thrusts or is it rare that start-up thrusts cause more stress than already operating systems?

Thank you both for you feed back!

Newmanite Thanks for you info however, I should have made my application more clear. I am hoping to use fogging for conveyor transfer points. Do you have any experience with this?

I am investigating Wet Dust Suppression applications for mineral mining (gold,zinc,lead etc). Does anyone have experience with High Pressure Water Fogging? How does it compare to the lower pressure air/water combination approach. Our system is upstream of a floation circuit and thus we need to...

Thanks guys BigInch The head engineers here are insisting that I use double walled piping. They are super concerned with spilage. Do you have any extra comments regarding this. I'm not sure that I mentioned that this system is for a Mine. I don't know if that makes much difference but I...