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Microwaves Heating : Strange results
Posted 25 oct. 2011, 08:49 UTC−4 RF & Microwave Engineering, Heat Transfer & Phase Change Version 4.0a 0 Replies
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I am trying to heat oil with the microwaves heating (RF module) using version 4.0 of COMSOL, but the temperature distribution which I am getting is very huge as compared to the real word and it is also confined to the area adjoining the microwaves port. In real word scenario, temperature should reach a few hundered degree celsius in heating for a day almost and also temperature distribution should be present at a distance say 50% wayay from the source inside the material. Although it will be small but it will be there. In my case I am getting temperature distribution of a few thousand degree Celsius near the port and confined in almost 10 cm distance from the source, which is strange for me.
Is it because I am defining the permittivity of crude oil as constant i.e. 1.5? How can I incorporate the change in phase of oil while heating in the model and what changes are necessarily required/expected?
Can you suggest any potential reason behind this?
Many thanks for any positive feedback.
Hello Muhammad Mohsin Rehman
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