Conversion Charts for PSI to Hydrostatic or Hydrodynamic Pressure

Hydrostatic pressure = density x acceleration due to gravity x height of liquid column.

Hydrodynamic pressure = 1/2 x density x velocity².

psi is a unit, as is Bar and Newton/metre². Coversion of quantities from one unit to another is a fundamental in engineering. This might prove useful: http://www.simetric.co.uk/

1 atmosphere = 14.7 psi, 1 atmosphere = 32' (google up these values for more accuracy) of hydrostatic pressure.

take Pressure in psi, multiply it by 32, divide by 14.7 and that will give you hydrostatic head in feet. Hydrodynamic head is a whole different animal--too many variables, not enough time.

examples:

100psi= 100 x 32 divided by 14.7 = 218 feet of head

84 psi= 84 x 32 divided by 14.7 = 183 feet of head

Who needs a chart?

Thanks, excuse me for me being very green.

I have a material that the "Min. plastic collapse stress" or plateau stress is 3 MPa for density of 0.5 g/cc, 13 MPa for 0.75 g/cc density, and 25 MPa for 1.0 g/cc density. These plateau stress levels in MPa units can be converted to psi units using the following conversion: 1MPa = 145 psi. Thus, the plateau stress values become, 3 MPa = 435 psi, 13 MPa = 1,885 psi and 25 MPa = 3.625 psi

So would ths formula you had provided work to give me accuracy to converting our now psi ... for example 145 psi x 32 (4640) divide by 14.7 (315.64)

Would this now be my answer of what our materials are ( able to resist 315.64?) or is this the wrong calculation.

HN

HN

Your statement that 1 atmosphere of pressure = 14.7 psi = 32 feet is only good for water.

For example: 1 atmosphere of pressure = 760 millimeters = 29.92 inches for mercury

Both of the above only convert the pressure to hydrostatic pressure, also known as liquid head.

PWSlack's response defining the hydrostatic pressure as (liquid density) x (gravitational acceleration) x (height of liquid column) is the correct, generalized equation for any liquid.