Bulk Mod / Compressibility of Water at Different Pressure, Temperature
Bulk Mod / Compressibility of Water at Different Pressure, Temperature
(OP)
Does anyone have a reference for tables or formulas that detail the relationship between compressibility of water (or bulk modulus) vs. Pressure and Temperature?
i.e. at T = 0 deg C, P = 20,000 kPag is the bulk modulus of water significantly different than at T = 20 deg C, P = 0 kPag (bulk mod = ~ 2.2 x 10^9 Pa)? And I should qualify "significant" to mean does it change the predicted amount of hydro test fluids required to bring a test section up to pressure.
Thanks in advance for any insight.
i.e. at T = 0 deg C, P = 20,000 kPag is the bulk modulus of water significantly different than at T = 20 deg C, P = 0 kPag (bulk mod = ~ 2.2 x 10^9 Pa)? And I should qualify "significant" to mean does it change the predicted amount of hydro test fluids required to bring a test section up to pressure.
Thanks in advance for any insight.





RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
Can the same bulk mod be used to estimate cube's required to bring a (~) fully packed test section up to pressure (0 kPag to 20,000 kPag)if the test occurs at 2 deg C or if the the test occurs at 30 deg C? Somewhere's in the bulk mod = 2.2 x 10^9 Pa range?
Thanks.
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
the usual elasticity issues are associated with trapped air in the vessel being tested not the modulus of water.
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
after that try "volumetric expansion of water with temperature"
I hate Windowz 8!!!!
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
What pressure ranges?
WARNING! If you receive an equation valid between "a" degrees and "b" degrees, the driver of that equation (probably an polynomial of 4, 5, 7, 8, or whatever level, do not EVER use it past the limits that it was written into.
Often, a table blows up outside the specified limits very, very quickly!
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
Just to give you some hints:
ftp://ruska.otago.ac.nz/OCEM/Staff%20documents/Sta...
http://documents.htracyhall.org/pdf/HTH-Archives/C...
http://www.nature.com/srep/2012/121218/srep00993/f...
http://www1.lsbu.ac.uk/water/data1.html
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
If your concern is ordering water for the test, quit fooling yourself, water trucks never arrive full and an 80 bbl truck will often have less than 70 bbl on it. Just one underfull truck (and they will all be somewhat underfull) will be a bigger error than compressibility of water, plus elasticity of the pipe, plus compressibility of dissolved gases. I always just order 5-10% more water than I expect to need.
David Simpson, PE
MuleShoe Engineering
Law is the common force organized to act as an obstacle of injustice Frédéric Bastiat
RE: Bulk Mod / Compressibility of Water at Different Pressure, Temperature
Then after sunset, the pipes cool and the pressure drops.
Or it rains and the pipes and tanks cool and the pressure drops.