Hagen-Poiseuille Flow in Circular Cylinder when Temperature is Exponential and Sinusoidal Function of Length

In this paper, we have investigated the heat transfer in a circular cylindrical pipe for Hagen-Poiseuille ow and used MATLAB as a scienti c tool to plot the graphs. The calculations for the axial heat conduction and the temperature gradient have been performed for both upstream and downstream ows. In this experiment, the results are plotted graphically for the di erent uids like Air, Water, Milk, Glycerin and Mercury. The physical trends of the plotted curves represent the values of heat transfer that were di erent in Hydrogen and Air; on the contrary rest of the uids were behaving similarly when temperature was taken as an exponential function and for sinusoidal function all the uids were behaving in a similar manner.