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3 cards from this section. Quick, good the night before a test.
Define the term 'mass transfer coefficient'.
Think about what it measures.
What is the primary driving force for diffusion?
From high to low concentration.
What does the concentration boundary layer affect?
Think about how substances move across phases.
True or False: Diffusion is always dominant in turbulent flow.
Consider the characteristics of turbid vs. calm waters.
Calculate the expected flux of a substance at a boundary layer given a concentration difference of 0.5 mol/m^3, and a mass transfer coefficient of 1.2 m/s.
Remember the relationship between flux, concentration difference, and mass transfer coefficient.
Discuss how increasing the turbulence of a flow would affect mass transfer rates at the boundary layer. Provide a qualitative reasoning.
Think about chaotic fluid movement versus smooth layering.
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