cfd analysis using ansys workbench fluent software
design a concentric double-pipe counterflow, 5-meter-long heat
exchanger with crossection shown in Figure 1. The heat exchanger is used to cool the engine oil for a large
industrial gas turbine engine. The flow rate of cooling water through the outer annulus is A kg/s and the flow
rate of engine oil through the inner annulus is B kg/s. The water and oil enter the outer annulus and inner
annulus at temperatures of C C and D C, respectively. Engine oil tube inner diameter is Di = 30 mm. The
wall thickness of outer and inner pipes is 2 mm.
First of all, you need to calculate the heat exchange in the configuration shown in the Figure 1, without fins,
and obtain the oil outlet temperature value. Then, you have to apply fins between outer annulus and inner
annulus to ensure that the outlet temperature of the oil does not exceed 50C. You have to gradually add
fins between outer and inner annulus to demonstrate the gradual reduction of oil outlet temperature. You
must compare different design scenarios and find an optimum design of the heat exchanger in terms of high
performance and low cost.
See attached file