How does blowing air cool down an object?

There are two warm objects in this model, separated by a thin, long insulator in the middle. In the upper part, there is a fan blowing from left to right. In the lower part, there is no fan blowing.

  1. Run the model and note the temperatures measured by the two thermometers.
  2. Turn the graph on to watch the changes of the temperatures.
  3. Use the buttons at the upper-right corner of the graph window to rescale the curves if necessary.
  4. After the model has run for about 0.4 model hour (the time for the model, not real time), write the temperatures measured by the thermometers in your workbook.

Set the wind speed to be "Low" and "High" and repeat steps 1-4, respectively.

After you have completed your investigation, answer the questions in your workbook.



Wind speed: Low Medium High
Graph: On Off       Velocity vectors of airflow: On Off
Streamlines: On Off       Heat flux lines: On Off