1.1. Application of Interphase Mass Transfer

Try these first

1. 1.

   What does the Sherwood number measure?

   Hint

   Think about how mass moves in fluids.

2. 2.

   Define the Reynolds number.

   Hint

   Consider what influences flow characteristics.

3. 3.

   What is the Sherwood number used for?

   • To measure flow velocity
   • To estimate mass transfer efficiency
   • To calculate viscosity

   Hint

   Consider what insights can be derived about mass transport.

4. 4.

   True or False: A higher Reynolds number always indicates better mass transfer.

   • True
   • False

   Hint

   Reflect on conditions that similarly affect mixing.

5. 5.

   A study is analyzing the dispersal of contaminants from a river into a lake. If the river has a Reynolds number of 20,000 while the lake has a Sherwood number of 2.5, calculate the mass transfer coefficient from the river to the lake, given appropriate diffusion coefficients.

   Hint

   Remember to apply the correlation correctly between the Reynolds and Sherwood numbers.

6. 6.

   Considering both Schmidt and Reynolds numbers, evaluate how temperature changes in a river impact pollutant dispersal in the event of a sudden chemical spill.

   Hint

   Connect changes in temperature with viscosity to relate to Schmidt number results.