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 flow and used MATLAB as a scientific tool to plot the graphs. The calculations for the axial heat conduction and the temperature gradient have been performed for both upstream and downstream flows. In this experiment, the results are plotted graphically for the dierent uids like Air, Water, Milk, Glycerin and Mercury. The physical trends of the plotted curves represent the values of heat transfer that were different in Hydrogen and Air; on the contrary rest of the fluids were behaving similarly when temperature was taken as an exponential function and for sinusoidal function all the fluids were behaving in a similar manner.