Pressure vessel is analyzed for two different cases 2.3.4.1 Case 1: In the first case,the pressure vessel is subjected to working internal pressure of 35Mpa. The pressure vessel is analyzed for hoop and various helical fiber orientations (+30,-30)s,(+35,-35)s,(+40,-40)s, (+45,-45)s, (+50,-50)s, and (+55,-55)s for symmetrical stacking sequence. Where, σall = allowable tensile stress for the pressure vessel, N/mm2 Sut = ultimate tensile strength for the pressure vessel material, N/mm2 Syt = yield strength for pressure vessel material, N/mm2 2.3 Corrosion Allowance The walls of the pressure vessel are subjected to thinning due to corrosion which reduces the life of the pressure vessel. Different pressure vessel configurations are considered and the resulting contact stresses are examined. The effect of saddle radius, saddle width, plate extension, and support overhang on the resulting stress field in both the vessel and support are evaluated and discussed. Hydrostatic Pressure. This is the calculated head pressure expected from the entered values for liquid level, specific gravity and local gravity. The calculation determines the difference in pressure between the bottom of the liquid column and the surface of the liquid, therefore it excludes any pressure contribution from air or a gas on the.
Contents
User Guide
Formulas
Help
Related Tools
User Guide
This calculator and conversion scale will convert the height or depth of a fluid in any units to a measurement of hydrostatic head pressure, and display a list of conversion values above and below the entered liquid level.
Formulas
The calculation formulas used for this tool are:
Symbols
P = Pressure
L = Liquid height
g = local gravity (e.g. standard = 9.80665ms-2)
ρ = Density of liquid
ρ0 = Density of fresh water (1000 kgm-3 @4°C)
SG = Specific gravity of liquid (e.g. fresh water = 1)
Height of Liquid Column
Enter the measured liquid depth to, or the height of fluid from a point at which the hydrostatic pressure is to be calculated.
Specific Gravity (SG)
Enter here the ratio of liquid density compared to the density of fresh water (1000 kg/m3). The default value is set to an SG of 1.00, which corresponds to fresh water at 4 degrees Celsius.
Local Gravity (g)
Enter the acceleration due to gravity for your geographical location in metres per second per second (ms-2). The local gravity is dependent on several factors such as latitude, height above sea-level, local geological density, etc… Refer to your national geological survey data for your location or use this local gravity calculator to determine a close approximation. The default value is set to 9.80665 ms-2 which is standard gravity.
Hydrostatic Pressure
This is the calculated head pressure expected from the entered values for liquid level, specific gravity and local gravity. The calculation determines the difference in pressure between the bottom of the liquid column and the surface of the liquid, therefore it excludes any pressure contribution from air or a gas on the surface.
Applications
Head pressure
Water resistance testing
Hydrohead
Help
Pressure generated by 40 foot high tank of Diesel
How would I determine the pressure range required to measure a 40′ deep diesel storage tank?
To determine the pressure generated by a 40 feet of Diesel, you will need to know the specific gravity (S.G.). The S.G. of Diesel varies depending on temperature and diesel type, but 0.95 is the maximum often indicated by many resources. Using this calculator a 40 foot column of Diesel would convert to 16.474 psi.
This conversion scale shows the conversion values over the 0 to 40 feet range:
Pressure on bottom of circular tank
What is the formula to calculate liquid pressure on bottom of a circular tank?
The pressure is directly related to the height of fluid and is independent of tank shape, so you would use the formula above.
Tank area & diameter dimensions
In the conversion of liquid level to pressure, why is there no consideration for the area or diameter of the tank?
Liquid level is directly proportional to hydrostatic pressure, so there are no other dimensions that need to be considered when converting liquid level to pressure. Area or diameter do not affect liquid level, but they do affect the liquid contents & volume measurement such as in a horizontal cylinder tank.
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Hi all please check the following link: http://karducci.altervista.org/PipeStress.pdf as you can see it's a pipe system modeled with shell181 elements subject to internal pressure (only) i need help about the membrane stress i get at the nozzle intersection - it should be considered local membrane stress so the allowable stress limit should be 1.5S, is it correct? - or maybe, since it's a very high geometry discontinuity location, i can consider the allowable stress limit equal to 3S? i have been increasing the main pipe and the nozzle equivalent tickness to low down the membrane stress but the solution i'm getting out is not cheap and hard to build any nice tip would be very appreciated thanks