Abstract: The objective of cooling water system is to remove the excess heat from the engine. The working fluid (water) is circulated from the tank to the cylinder liner of each individual cylinder through the cooling water pipe. The working fluid (water) is cooled by circulating it through the radiator and recycled again. When a crack is developed in the cooling water pipe the entire system collapses and the loco gets shut down. The problem identified by us was that the existing cooling water design has more number of bends. Our intension is to analyse the fluid flow pattern in the existing cooling water pipe design and to provide an improved design with less number of bends, better fluid flow pattern and minimum number of failures.

Keywords: Cooling water pipe, working fluid, fluid flow pattern.