Darcy-Weisbach Equation: Understanding Friction Loss in Pipe Flow

Darcy-Weisbach Equation: Understanding Friction Loss in Pipe Flow can be used to calculate the head loss due to friction in a pipe flow system.

Input Parameters

Results

Formula

Head Loss (h) = (Friction Factor * (Pipe Length / Pipe Diameter)) * ((Flow Rate / (π * (Pipe Diameter^2 / 4)))^2 / 2 * Gravity)

Where:
h = Head Loss (m)
Friction Factor = Dimensionless
Pipe Length = Length of the pipe (m)
Pipe Diameter = Diameter of the pipe (m)
Flow Rate = Volumetric flow rate (m³/s)
Gravity = Acceleration due to gravity (9.81 m/s²)

Darcy-Weisbach Equation: Understanding Friction Loss in Pipe Flow Calculator Guide

Learn how to use the Darcy-Weisbach Equation: Understanding Friction Loss in Pipe Flow calculator and its working principle.

How to Use the Calculator

  1. Enter the length of the pipe in meters.
  2. Enter the diameter of the pipe in meters.
  3. Enter the flow rate in cubic meters per second.
  4. Enter the kinematic viscosity in square meters per second.
  5. Enter the friction factor (dimensionless).
  6. Click the "Calculate" button to compute the head loss.
  7. The result will be displayed in meters.

Understanding the Darcy-Weisbach Equation

The Darcy-Weisbach equation is used to calculate the pressure or head loss due to friction along a given length of pipe. The equation is given by:

h = f * (L/D) * (v²/2g)

Where:

  • h is the head loss due to friction (m).
  • f is the Darcy friction factor (dimensionless).
  • L is the length of the pipe (m).
  • D is the diameter of the pipe (m).
  • v is the velocity of the fluid (m/s).
  • g is the acceleration due to gravity (9.81 m/s²).