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divergence operator
Posted Dec 1, 2015, 12:47 p.m. EST Parameters, Variables, & Functions Version 5.2 1 Reply
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Hi everyone,
i am new user of comsol. I have struggled in the passed days trying to find the operator that calculates the divergence of a velocity field cross a magnetic field : divergence(VXB)
looking in forums I have just found a suggestion that is: d(VxBx,x) + d(VxBy,y) + d(VxBz,z) but when i compare the solution with other simulations using a different software they differ considerably.
is there a direct function in comsol that calcultates the divergence of a given field? does it work using classic PDEs?
Thank you in advance for your atention and for your help!
Daniel
i am new user of comsol. I have struggled in the passed days trying to find the operator that calculates the divergence of a velocity field cross a magnetic field : divergence(VXB)
looking in forums I have just found a suggestion that is: d(VxBx,x) + d(VxBy,y) + d(VxBz,z) but when i compare the solution with other simulations using a different software they differ considerably.
is there a direct function in comsol that calcultates the divergence of a given field? does it work using classic PDEs?
Thank you in advance for your atention and for your help!
Daniel
1 Reply Last Post Dec 1, 2015, 4:26 p.m. EST
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Posted:
9 years ago
div(V X B) = d(V_y*B_z-V_z*B_y,x)+d(V_z*B_x-V_x*B_z,y)+d(V_x*B_y-V_y*B_x,z) , no?
Best,
Jeff
Best,
Jeff