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Heat Transport / Expansion of solid in liquid
Posted 2016年6月24日 GMT-4 10:53 Heat Transfer & Phase Change, Structural Mechanics Version 5.2a 0 Replies
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I have a problem to analyze the expansion and heat transport in fluid and solid.
There is a probe made of polycarbonate. Inside the probe there is a coil made of copper.
The coil is heating the outside probe with a power of 5 W. I want to know what the expansion of the coil and the polycarbonate is as effect of the heating in the coil.
The probe is surrounded by 1 dm^3 of water (liquid). There is assumed that the water keeps the same temperature.
I made a model in comsol. but it is giving an error: Undefined value found.
- Detail: Undefined value found in the stiffness matrix.
There are 20872 equations giving NaN/Inf in the matrix rows for the variable comp1.solid.pw.
I also have a couple of questions.
The heat conductivity h (W/m^2K) is asked. but I only know the heat conductivity k (W/mK) Does somebody know how to transform these coefficients?
Maybe there is a problem with E, mu and alpha (1/K) of the Water. Comsol asked it, while there is none for liquid (I think so).
Every little help will be apreciated a lot!
Because of the amount of mb's I could not upload on this forum. I uploaded it on another website:
www.filedropper.com/ems30
Attachments:
Hello Max Zuidhoek
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