LearnChemE

#### Calculating the Pressure Drop and Power in Pipe Flow: Screencasts

Demonstrates how to calculate the pressure drop in a pipe containing major and minor losses.

We suggest you list the important points in this screencast as a way to increase retention.

Shows how to calculate power needed to run an example piping system.

We suggest you list the important points in this screencast as a way to increase retention.

##### Important Equations:

$Re = \frac{\rho UD}{\mu} = \frac{UD}{\nu}$

where $$Re$$ is the Reynolds number
$$U$$ is the freestream velocity
$$D$$ is the pipe diameter
$$\rho$$ is the fluid density
$$\mu$$ is the fluid dynamic viscosity
$$\nu$$ is the fluid kinematic viscosity

$\frac{P_1}{\gamma} + \alpha_1 \frac{V^2_1}{2g} + z_1 +h_P = \frac{P_2}{\gamma} +\alpha_2 \frac{V^2_2}{2g} + z_2 + h_L$

where $$\gamma$$ is the specific weight of the fluid
$$\alpha$$ is the kinematic parameter
$$h_P$$ is the pump head
$$h_L$$ is the head loss

$h_L = f\frac{L}{D}\frac{V^2}{2g}$

where $$f$$ is the friction factor
$$L$$ and $$D$$ are the length and diameter of the pipe respectively
$$V$$ is velocity
$$g$$ is gravity

$Power = h_P \gamma Q$

where $$Q$$ is the volumetric flow rate