 ## Pressure drop for pipes

### Pressure drop for pipes

Input Result
Flow q=
Pipe diameter d= mm
Kinetic viscosity ν= *10-6 m2/s
Density ρ= kg/m3
Material roughness k= mm
Pressure drop Δp= Pa/m
Velocity v= m/s

### Flow

The liquid flow in the relevant pipe.

### Tube diameter

The actual inside diameter of the pipe.

### Kinematic viscosity

Specifies how quickly a liquid spreads relative to its mass if it is poured out on a flat surface. In the original case, set to air at 20˚C.

### Dynamic viscosity

Are proportionality factor for the force it takes to parallel displace a surface relative to another, if the gap between these surfaces is filled with a viscous liquid or gas.

### Density

Density or volume of the mass is an SI unit and is a measure of a specific substance density, ie mass per unit volume. A synonym for density that can sometimes occur is specific gravity.

### Pressure

Pipe pressure drop corresponds to the force required to move the medium in the relevant pipe of 1 meter.

### Velocity ​​

The velocity of the medium in the tube.

### Material roughness

A material constant that indicates how smooth tube material is.

### Formula

Hagen-Poiseuille: Darcy-Weisbach: Pressure drop calculation for laminar flow. Pressure drop calculation for turbulent flow.  Approxomative solution to Colebrook-White     