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In the Gaussian Plume Model, the plume rise varies with Buoyancy Flux Parameter F as

  • A.\(F\)
  • B.\(F^{1/2}\)
  • C.\(F^{1/3}\)
  • D.\(F^{1/4}\)

Answer: C

In the Gaussian plume model, the plume rise varies with the buoyancy flux parameter F as F to the power 1/3. Briggs' plume rise equations for buoyant plumes in neutral or unstable air give the final rise proportional to F^(1/3) multiplied by a power of distance or inversely to wind speed, and the 1/3 power is the standard result for the buoyancy-dominated rise. A linear dependence on F or the powers 1/2 and 1/4 are not the standard forms, although F^(1/4) appears in the stable-air formula, which is a different case.

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