I am working on my bachelor project, and trying to do a flow simulation through a pipe. 

The situation is:

a pipe with a temperature of 20C, in a enviornment with the same air temperature. No other temperature sources.

A fuel mix then goes into the inlet, with a temperature of 60C ,

Total volume flow rate inlet: 0,0003472 m3/sek.

Ammonia (gas phase) 0,0000069 m3/s 20% 

Diesel 80% 0,000027 m3/s

During the first minutes of the start, the fuel mix will heat up the pipe. I would like to see the temperature behaviour of the pipe and fuel mix during this period, until the pipe is heated up to 60c

The reason for the simulation is because the ammonia gas is cooled down by the pipe during this period, and the ammonia that goes under temperature 50c condensates to liquid phase.

Goals:

-How far out in the pipe will the temperature at the fuel mix fall to 50 c and lower?

-Animate the flow, and see the surface of the pipe temperature, so it is possible to see how much time it goes before the whole pipe is 50c or more

-how much amount of the ammonia have been below 50c during this period?

I have made some simulations,but i does not seem to be correct.

please see attached file for details. I can also send directly the file and result files from flow simulation if needed/which way is the best alternative to share?

additional question:

At the flow simulation wizard, if i choose "heat conduction in solids" it is not possible to choose "substance consentrations" later, when i want to insert "boundary conditions".So im not able to adjust percentage between ammonia/Diesel

Regards,

Kristian

Edu ​​​​​​​SOLIDWORKS ​​​​​​​