The disk is manufactured from brass 3.2 mm thick and 110 mm in diameter with a central copper core 14 mm in diameter. The thermal conductivity of the Brass disk is approximately 125 W/m.C at the typical operating temperature. The central core of the disk is heated by a cartridge type electric heating element, and the temperature at the interface with the Brass is maintained at T1=100C. The opposite end of the Brass disk is maintained at T2=20C. The entire radial specimen is located in side a plastic enclosure which provides an air gap and insulates the section to minimize heat loss to the surroundings.
For steady state conduction with no heat generation drive the radial temperature characteristics as a function of the radial distance from the center of the cylinder. Plot this characteristics as a function of the radial distance r.