Note: With your computer mouse just: 1) Toucheach of the six produced free executable COMSOL runtime Apps for brief description of the 'Heat Transfer APPS “Case Studies”' 2) Click on the App picture to have it downloaded, for free for students and professors worldwide to use "out of the box" to learn the science behind the simulation. 3) Click on the blue button below for 3 minute short video for the "Know How" to App1 Numerical & Analytical Navigation Manual.