- #1

Axe199

- 48

- 0

So, i was studying some fin design in a heat transfer course , and then came the part where the efficiency is to be calculated, then i noticed that when he calculated the surface area and the sides of a rectangular fin weren't included, so i searched and i found out that it was neglected because it's a one dimensional system, i understand how will that add an extra dimension, but i don't understand how is this a one dimensional system to begin with, we have conduction in x direction and convection in y direction so that's 2 directions

edit: i just watched a video where he said he neglected the sides because they have negligible area...makes sense but i am not sure that this is 100% right because he also ignored the tip and we don't ignore it in our course

edit: i just watched a video where he said he neglected the sides because they have negligible area...makes sense but i am not sure that this is 100% right because he also ignored the tip and we don't ignore it in our course

#### Attachments

Last edited: