Heat Transfer
Heat transfer lectures by Professor Josua Meyer (2014). Topics covered in the lectures include: transient or unsteady heat conduction, convection heat transfer, external and internal forced convection, heat exchangers, thermal radiation including atmospheric and solar radiation. The lectures are based on the textbooks of White (8th ed) and Cengel and Ghajar (4th ed) and were presented as part of a heat transfer class to the fourth year students of the Department of Mechanical and Aeronautical Engineering, University of Pretoria.
| Lecture 06 - Transient Heat Conduction: Large Plane Walls, Long Cylinders and Spheres |
This lecture continues with transient heat conduction, specifically in large plane walls, long cylinders and spheres. After the exact equation for one dimensional heat transfer was derived in the previous lecture this lecture focuses on what the different terms of the exact solution means and how and when it can be simplified to approximate solutions. The use of the Heisler charts is also discussed as well as the foci of each one of the three graphs for each Heisler chart. The physical meaning of the Fourier number is also discussed.
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