Recent content by proinwv

This might be of some use in understanding what I was trying to say, as it relates to turbulent flow.

It is part of the ISA S75.01.01 This is "the" standard of the valve industry. Most references ignore this at their peril. Choking occurs when the pressure in the vena contracta within the valve drops to the vapor pressure of the liquid and vaporization occurs, preventing further flow...

ooops I meant to say the flow must be TURBULENT.

The equation given is generally correct as long as there is no choking, and the flow is laminar. The ISA standard S75.01.01 gives extensive information on the subject. Also, the valve manufacturer should provide sizing information that will take that into account. www.ostand.com

nucleus, thanks for the link. This is what I needed. I appreciate the information.

Yes I have without any luck, in addition to wikipedia and other sources. I just found this forum and thought that I would give it a try.

Also, flanges have either flat or raised faces. They can not be mixed. Doing so can cause cracking of the flat faced flange. Another reason for the leakage could be gasket blowout. Have you checked that? Flat faced flanges should have full face gaskets. Further, if the flanges have...

I am looking for information on the density of a liquid at lower temperatures. I have it at 15C as 725 kg/m^3. The fluid is avgas 100LL. I wish to determine it at lower temperatures. I believe that the change in liquid densitiess is rather small for temperature changes, but I can't verify...