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Convection and Conduction in Pipe
Posted 3 mar 2021, 20:35 GMT-5 Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD) 0 Replies
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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
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