1.2. Modeling Goals

Try these first

1. 1.

   What is mass balance?

   Hint

   Think about how substances enter and leave a system.

2. 2.

   Define an Eulerian model.

   Hint

   Recall the fixed reference frame concept.

3. 3.

   What principle does mass balance follow?

   • Rate out equals reactions
   • Rate in minus rate out
   • Total emissions

   Hint

   Think about what actually changes in a system.

4. 4.

   True or False: Lagrangian models are fixed in one place.

   • True
   • False

   Hint

   Recall the definitions of model types we've discussed.

5. 5.

   A factory releases 500 kg of pollutant continuously. If 300 kg is removed by natural processes and 100 kg are converted through reactions, calculate the amount remaining in the surrounding area after 5 hours of steady monitoring.

   Hint

   Remember to subtract the rates appropriately.

6. 6.

   Discuss the implications of turbulent winds on dispersion modeling in urban areas. How could this affect pollutant concentration predictions?

   Hint

   Think about how wind patterns affect climate and air quality.