Resistive forces on a submarine?

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SUMMARY

To accurately determine the resistive forces acting on a submarine traveling in seawater at a constant velocity, Computational Fluid Dynamics (CFD) modeling is essential. This method allows for precise simulations of fluid interactions and drag forces. Alternatively, physical testing can be conducted by towing a scaled model of the submarine behind a boat equipped with a force gauge to measure resistance. Both methods provide valuable data for calculating energy consumption per kilometer.

PREREQUISITES
  • Understanding of Computational Fluid Dynamics (CFD) modeling
  • Knowledge of drag force principles in fluid dynamics
  • Experience with physical model testing and force measurement techniques
  • Familiarity with energy consumption calculations in marine engineering
NEXT STEPS
  • Research CFD software tools for marine applications, such as ANSYS Fluent or OpenFOAM
  • Study drag force equations and their application in underwater vehicles
  • Learn about model testing techniques for hydrodynamic resistance measurement
  • Explore energy consumption analysis methods specific to submarines and underwater vehicles
USEFUL FOR

Marine engineers, naval architects, and researchers focused on submarine design and performance optimization will benefit from this discussion.

K_Factor
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Lets say I was going to build a submarine, how could I determine most accurately the resistive forces as it is traveling in sea water at a constant velocity. I need to know how much energy it would consume per km. Cant find anything about this online..

Thanks in advance!
 
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You would probably determine the frcition forces from the amount of energy (or rather power) it used at constant speed.

If you were developing a submarine you would do CFD modelling in a computer or drag a model behind a boat with a force gauge - depending on how big a navy you are.
 

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