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Simulating an Electric field with water and silicon nitride?

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Hi All,

I'm new to comsol so please bear with me!

In my simulation, I'm trying to view electric field as a current
travels from the geometry labeled 'Water Top' through the various cones
into the geometry labeled 'Water Source,' which is grounded. This set-up is
surrounded by the insulator Silicon Nitride as both a block surrounding
'Water Source' and conical micro needles. The water channels exist through
the silicon nitride, as seen in the geometry.

I would expect the results to feature a strong electric field through the
water cylindrical channels, with it rapidly degrading as it expands
radially into the insulator, but I must be making a mistake somewhere.
Any insight as to why this isn't working is much appreciated.

The file can be downloaded here:

drive.google.com/open?id=0B95gJ0PbzIsweXVvYzdPZnh0UGs

Thank you in advance!

0 Replies Last Post 13.06.2017, 10:45 GMT-4
COMSOL Moderator

Hello Jesse Fine

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