Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Convection and Conduction in Pipe
Posted 2021年3月3日 GMT-5 20:35 Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) 0 Replies
Please login with a confirmed email address before reporting spam
Hello,
I am working on a project where I need look at the heat transfer in a pipe. My model consists of a pipe and the fluid domain inside of the pipe (eventually the pipe will be surronded by Phase Change Material on the OD and a twisted tape will be put inside the pipe). The model works in two steps.
- Calculate the flow of the water using a laminar flow staionary study.
- Calculate the heat transfer using a heat transfer in solids and fluids time step study while pulling in the results of study 1. Note currently we assume the OD of the pipe is insulated
I run the 2 simualtions and gets results. For post proccesing I look at the convective and condective heat transfer at the boundary between the fluid and pipe (ie ID of pipe). In particular I use normal flow to the boundary. For conduction I get values, but for convection the values are all 0.
Can any provide feeback on to why I am not getting any convection at the boundary. Does anyone know how to calculate the Nusselt number in this scenario? Also is anyone aware of any youtube video or tutorial regarding to convection in a pipe?
Thanks for taking the time to look at this and for any help.
Daniel
Hello Daniel Aprile
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.