[aja1345]

Hi,


I am simulating a furnace as follows:







Is it possible to capture temperature distribution in this furnace without designing intake fan? Which kind of boundary conditions can replace with intake fan?
In this model, there is a electrical element for generating heat (in fact, transferring heat to air flow). How can I set this element as a boundary condition?


In addition, There are four cylinder in this model and they rotate. I want to obtain temperature distribution around these cylinders.


This problem is unsteady an 3D. Firstly (t=0), temperature in furnace is 25 but when air flow cross air duct and electrical element, temperature in exit of duct is equal to 200 C. All of furnace walls are adiabatic. Therefore, We have two kind of work(electrical work and mechanical work) and Q=0.

What information (pressure, temperature, heat flux, power and ...) should I have for boundary conditions in parts of Fan and element?

Major goal in this simulation is to find that temperature distribution (inside the furnace) is uniform or not (i.e 200 C).


I am grateful that guide me and give me useful links and documents in this case.

[ghorrocks]

This is a straight forward simulation.

Model the fan with a momentum source term. You can model it using a fan performance curve if you like. This will get the flow motion from the fan occurring without modelling the fan in detail.

The heating element can be either conditions applied to the walls of the duct or a heat source term.

The rotating cylinders, assuming they are stationary and rotating about their central axis, can be modelled as a tangential velocity on the cylinder faces. This also assumes you are not interested in the heat field inside the cylinders. If you want the heat field inside the cylinders you will need to model them as solids.