6.1. Fate and Transport of Contaminants

Try these first

1. 1.

   Define the Sherwood number.

   Hint

   What does it express in terms of mass transfer?

2. 2.

   What is the Reynolds number used for?

   Hint

   Think about its relationship to fluid behavior.

3. 3.

   What is the relationship expressed by the Sherwood number?

   • Ratio of mass transport
   • Ratio of thermal conductivity
   • Ratio of pressure drop

   Hint

   Think about what it measures in terms of flow.

4. 4.

   True or False: The Reynolds number can predict whether a fluid's flow is laminar or turbulent.

   • True
   • False

   Hint

   Recall its definition and purpose.

5. 5.

   Given a scenario with oil spills, describe how you would assess the risks associated with both LNAPL and DNAPL in a river setting.

   Hint

   Consider physical behaviors of each contaminant type.

6. 6.

   How would you calculate the mass transfer coefficient for a contaminated lake under quiescent conditions? Specify what factors you'd need.

   Hint

   Refer back to the definitions of NSh and the conditions affecting it.