3.1. Mass Transfer Coefficients for Lakes

Try these first

1. 1.

   What does the Sherwood number represent?

   Hint

   Think about how mass moves in fluids.

2. 2.

   Which number indicates whether fluid flow is turbulent?

   Hint

   It's named after a scientist and deals with flow characteristics.

3. 3.

   What does the Sherwood number measure?

   • Diffusion rate
   • Convective mass transport ratio
   • Viscosity

   Hint

   Focus on mass transport characteristics.

4. 4.

   True or False: A higher Reynolds number indicates laminar flow.

   • True
   • False

   Hint

   Recall how fluid flows change with Reynolds number.

5. 5.

   A lake experiences a temperature difference causing a gradient. How would you set up a model to analyze mass transfer using the Sherwood number?

   Hint

   Aim to correlate the conditions of the lake with the coefficients.

6. 6.

   A sediment-water interface is subject to both turbulent flow and diffusion. How would you decipher the contributions of the Reynolds and Schmidt numbers to the mass transfer process?

   Hint

   Think through the physical processes occurring at that interface.