Cavity fluid pressure - thermal expansion

[MJJones]

Given an oil-filled cavity that is heated, how can I find the oil pressure after thermal expansion?

I have CTE and original/ending volumes, just don't remember hwo to calculate pressure on the seal....trying to calculate whether seal with break.

 

[TD2K]

If the cavity is fixed volume, the pressure rise is in the order of 50 to 75 psi per deg F for an oil.

 

[Alph]

Change in Volume / Original Volume = Change in Pressure / Bulk Modulus

Dp = (Dv/V)*K = K* (Af -At)*DT
Af = Fluid Thermal Expansion Co-efficient
At = Tubing Thermal Expansion Co-efficient
K = Fluid Bulk Modulus

 

[vzeos]

Take a look at thread124-133483.

 

[MJJones]

AMAZING, gentlemen. Thanks for your help.

 

[MortenA]

Theres also a FAQ at:

http://www.eng-tips.com/faqs.cfm?fid=224

Best regards

Morten