Related Resources: Fluids Engineering
Karman Method Excel Calculator Spreadsheet
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Pressure Drop and Flow Rate Calculations based on the Karman Method Excel Calculator Spreadsheet
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Data input and Output:
- Q flow rate
- L pipe length
- d pipe NPS
- ρ fluid density
- μ fluid viscosity
- ε pipe roughness
Karman's momentum integral approach:
Ref: Schlichting: Boundary layer theory
With a general pressure gradient the boundary layer equations can be solved by a variety of modern numerical means. An alternative which can still be employed to simplify calculations is the momentum integral method of Karman. We explain this method for a transient boundary layer along the x-axis forced by an unsteady pressure gradient outside. This pressure gradient can be due to some unsteady and nonuniform flow such as waves or gust.