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How to calculate effective dielectric constant?
Posted 2022年9月20日 GMT-4 09:31 Modeling Tools & Definitions, Studies & Solvers Version 5.5 1 Reply
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Greetings to all,
I have recently started using COMSOL to simulate a system from which I want to calculate the effective dielectric constant. I contruct the system as follows:
- I generate a "bulk" material_1 (rectangular shape)
- I generate N circles to represent particles of material_2; unite these circles (dont keep input objects nor interior boundaries)
- I make the difference between material_1 and material_2 systems, keeping both input objects and interior boundaries;
- On electrostatics physics I set the lower edge of material_1 to be ground and upper edge to be the electric potential;
At this point, from this construction I want to calculate mostly the effective dielectric constant, but if I can calculate effective resistivity and piezoelectric constant would be great as well. I do my simulations on Static solver but I also tried Frequency domain (1 kHz to 1 MHz) and the results do not change. Moreover, for such simulations I have already done their experimental counterparts so I know what to expect.
How do I calculate the effective dielectric constant and my simulations appear to be incorrect?
Best regards,
VR
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Hello Victor,
See this model which involves a different physical phenomenon but basically the same equation.
Note that in 2D your circles correspond to cylinders. Not sure whether that's the shape you intend for your particles, but I thought I'd mention it. If you intend to model spherical particles, then a 3D model is in order.
Best,
Jeff
-------------------Jeff Hiller