Dimensionless numbers in fluid mechanics

Dimensionless numbers in fluid mechanics and their significance

The important dimensionless numbers in fluid mechanics are

  1. Reynold’s number
  2. Froude’s number
  3. Weber’s number
  4. Euler’s number
  5. Mach’s number of Cauchy’s number
  1. Reynold’s number : It is the ratio of inertia force to the viscous force.
  2. Froude’s number : It is the ratio of inertia force to the gravity force.
  3. Weber’s number : It is the ratio of inertia force to the surface tension force.
  4. Euler’s number : It is the ratio of inertia force to the pressure force.
  5. Mach’s number of Cauchy’s number : It is the ratio of inertia force to the elastic force.