CASE STUDY

You are a fresh mechanical engineering graduate, who has recently secured a job in a firm,

which manufactures motorcycle engines. Your boss wants to assign you to the thermal analysis

team, and wants to gauge your conceptual understanding of heat transfer. He takes you to the

manufacturing unit and shows you an engine being installed on the frame. You already have

some prior knowledge that engines generate a lot of heat when the motorcycles are driven,

and that it is important to design them in a manner which removes this generated heat, to

avoid material failure.

1. Your boss asks you to select one material from the below mentioned choices to manufacture the engine, and give your reasoning from an engineering perspective, as to why you select/didn’t select it?

Silver; Steel; Plastic;

Reasoning:

2. He then points to the multiple fins (protrusions) on the engine, and asks you explain how they help cool the engine and via which heat transfer mechanisms?

Ans: