Heat loss in hydraulic hose

Hi,

I'm working on an project where it's in my interest to find the heat loss to the surroundings, from the hydraulic fluid
inside a hose. I have access to Comsol Multiphysics 4.3 through my work and school, but has only used it with
mechanical simulations before.

If someone could help me get started, I would be greateful. Also, if somone has made an simulation like this and have
the .mph file, it would be very glad if you could share this with me?!

I have attached an image of an simple straight forward hose that I want to simulate.


I will be grateful for any help you can provide.