How to relate effect of hot side flow rate on skin temperature min wall temp and max wall temp in s&t heat exc?

I am performing paramaetric analysis on shell and tube heat exchange in xchanger suite htri software and i need I have generated graphs of effect of various parameters by altering one parameter. i want to find out effect of changing hot flow rate on skin temp, min wall temp, max wall temp, total pr drop, mid velocity, average film coefficient and justify the nature of the curve please help..