Wilfried's calc

Bernoulli's Equation
Bernoulli's equation is one of the most important/useful equations in fluid mechanics. Many problems relating to real fluid are analyzed with a form of the Bernoulli equation. Each of the terms in the equation is expressed with units of energy per unit mass. In fluid flow, energy per unit mass is known as head.

Specific Gravity (Weight)
This equation computes the Specific Gravity (SG) based on the ratio of the specific weight of a substance to the specific weight of water under standard conditions. Standard temperature and pressure (STP) is defined as `0^@`C and 100kPa pressure.

Head loss
The Darcy-Weisbach equation is used in fluid dynamics to relate the fluid pressure (known as head) loss experienced due to friction as the fluid moves through a length of pipe. The measurement depends on a dimensionless friction factor known as the Darcy friction factor.

Specific Gravity (Density)
This equation computes the Specific Gravity (SG) based on the ratio of mass density to density of water under standard conditions. The density of water in this equation is specified as 1000 kg/`m^3`at standard conditions. Standard temperature and pressure (STP) is defined as `0^@`C and 100kPa pressure.

Specific Weight (Density)
This equation computes the Specific weight (`gamma`) from the product of the mass density and the gravitational constant, g. Density is input in units of kg/`m^3`.