I am trying to solve a transient heat transfer problem.
The problem is that I have an insulated pipe that is immersed in cold water. At time 0, the fluid filling the pipe is at a constant temperature. The insulation at one end of the pipe is different to the rest of the insulation. I need to find out the time that it would take any fluid to reach a certain temperature, called the cool down time.
A graphic representation of the...