Why is the Lorentz force calculated in Ansys Maxwell so low?

AI Thread Summary
The Lorentz force calculated in Ansys Maxwell appears significantly lower than expected, with results around 10^-4 N compared to the anticipated 0.1 N based on the formula F=B*I*l. The model involves a magnetically conductive plate in a static magnetic field, which should enhance the magnetic field strength to approximately 10 mT. Despite using both 3D and 2D models, the results remain consistent and unexpectedly low. The discussion highlights a potential misunderstanding or missing factor in the calculations or model setup. Further investigation or sharing of the project file may be necessary to resolve the issue.
densaface
Messages
2
Reaction score
0
Why is the Lorentz force calculated in Ansys so low? According to the formula F=B*I*l, it is supposed to be at least 1000 times higher. The model is really simple: a magnetically conductive plate in a static magnetic field inducts the magnetic field from the surrounding space, which makes its own magnetic field dozens of times stronger than in the surrounding vacuum (which is perfectly logical) - around 10 mT. A 10 A electric current runs perpendicular to this magnetic field in the plate. According to the formula, F=B*I*l=10-2*10*1=0.1 N, but the program produces results in the range of 10-4 N for the Lorentz force. I have tried both 3D and 2D models and the result is nearly identical. What am I missing?

p.s. I can attach my project file if it helps
 
Engineering news on Phys.org
just in case the project archive
 

Attachments

Hello, did you find the answer to this? I have the same problem...
Regards
Mario
 
While I was rolling out a shielded cable, a though came to my mind - what happens to the current flow in the cable if there came a short between the wire and the shield in both ends of the cable? For simplicity, lets assume a 1-wire copper wire wrapped in an aluminum shield. The wire and the shield has the same cross section area. There are insulating material between them, and in both ends there is a short between them. My first thought, the total resistance of the cable would be reduced...
Hi all I have some confusion about piezoelectrical sensors combination. If i have three acoustic piezoelectrical sensors (with same receive sensitivity in dB ref V/1uPa) placed at specific distance, these sensors receive acoustic signal from a sound source placed at far field distance (Plane Wave) and from broadside. I receive output of these sensors through individual preamplifiers, add them through hardware like summer circuit adder or in software after digitization and in this way got an...
I am not an electrical engineering student, but a lowly apprentice electrician. I learn both on the job and also take classes for my apprenticeship. I recently wired my first transformer and I understand that the neutral and ground are bonded together in the transformer or in the service. What I don't understand is, if the neutral is a current carrying conductor, which is then bonded to the ground conductor, why does current only flow back to its source and not on the ground path...

Similar threads

Back
Top