Faraday’s law and voltage generation

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SUMMARY

Faraday’s law states that a conductor moving through a magnetic field generates an electromotive force (emf). This discussion explores the potential of using highly conductive liquids, such as seawater, moving through magnetic fields to generate useful emf, akin to the principles used in magnetic flowmeters. While theoretical applications exist, such as magnetohydrodynamic (MHD) drives, practical implementations remain untested. The discussion references the concept of magneto-drive technology as depicted in "The Hunt for Red October" and mentions existing electromagnetic speed logs for vessels.

PREREQUISITES
  • Understanding of Faraday’s law of electromagnetic induction
  • Familiarity with magnetohydrodynamics (MHD)
  • Knowledge of electromagnetic flow measurement techniques
  • Basic principles of electromotive force (emf) generation
NEXT STEPS
  • Research practical applications of magnetohydrodynamic drives
  • Explore the design and functionality of electromagnetic speed logs
  • Investigate the feasibility of using seawater for emf generation in magnetic fields
  • Study advancements in conductive liquid technologies for energy generation
USEFUL FOR

Engineers, physicists, and researchers interested in electromagnetic applications, energy generation methods, and marine technology innovations.

JimH59
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If a conductor moving through a magnetic field generates an emf, which it does, COULD a highly conductive liquid (eg: sea water) moving through said field (like a magnetic flowmeter measuring flow rate is used) generate and would it be enough to be useful?
 
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There is a different, but closely related situation (magnetohydrodynamic drive or MHD accelerator), where magnetic fields are used to propel ships with no moving parts:
Screen Shot 2022-04-20 at 9.12.24 AM.png


Screen Shot 2022-04-20 at 9.17.01 AM.png

Some one who knows more about this stuff could give a better explanation of this than I could.

The Russian sub in "The Hunt for Red October" was supposed to be powered by something like a magneto-drive.
Screen Shot 2022-04-20 at 9.21.49 AM.png
 
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