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question : loudspeaker driver 3D model
Posted Nov 12, 2013, 5:24 a.m. EST Acoustics & Vibrations Version 4.3b 2 Replies
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Hi, Sorry for my bad English.
I'm studying library sample loudspeaker driver(comsol 4.3b).
I want to analysis it by changing 2D model into 3D.
I used the same Model libary of the BCs(Boundary Conditions)
ex) The coil is driven with a body load set to
linper(V0)+coil_av(acsl.u_tZ*mf.Br*2*pi*r*N0)
2D : mf.Br, --> 3D : mf.By changed
But when I try to solve this problem, comsol solver show me the error in below.
" Out of memory during assembly "
What does this error mean??
I am using xeon E5 2640 2.5GHz x2, 128GB ECC Ram with win7 64bit
I wonder if there is a BCs setting that has to be modified when 2D is converted into 3D.
Thank you for any help.
I'm studying library sample loudspeaker driver(comsol 4.3b).
I want to analysis it by changing 2D model into 3D.
I used the same Model libary of the BCs(Boundary Conditions)
ex) The coil is driven with a body load set to
linper(V0)+coil_av(acsl.u_tZ*mf.Br*2*pi*r*N0)
2D : mf.Br, --> 3D : mf.By changed
But when I try to solve this problem, comsol solver show me the error in below.
" Out of memory during assembly "
What does this error mean??
I am using xeon E5 2640 2.5GHz x2, 128GB ECC Ram with win7 64bit
I wonder if there is a BCs setting that has to be modified when 2D is converted into 3D.
Thank you for any help.
2 Replies Last Post Nov 21, 2013, 12:42 a.m. EST
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Posted:
1 decade ago
Hi
This has to do with the memory usage of your computer- your computer runs out of memory during the solving of the model. If you are using a "direct solver" try changing it to some other type, it might fix your problem. You could also try a coarser mesh (normal or coarse instead of fine).
--
/RVN
This has to do with the memory usage of your computer- your computer runs out of memory during the solving of the model. If you are using a "direct solver" try changing it to some other type, it might fix your problem. You could also try a coarser mesh (normal or coarse instead of fine).
--
/RVN
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Posted:
1 decade ago
Hi, RVN
Thank you for your reply.
I actually tried, but it still have a problem.
multi-turn coil > in the V_coil editfield, type
linper(V0)+coil_av(acsl.u_tZ*mf.Br*2*pi*r*N0)
change : mf.Br => constant input : 1 [T]
but another error has occurred.
" segregated solver steps do not involve all components. "
look at the image attached for a clearer picture. How do I set up the boundary conditions for this type of problem.
Thank you.
Thank you for your reply.
I actually tried, but it still have a problem.
multi-turn coil > in the V_coil editfield, type
linper(V0)+coil_av(acsl.u_tZ*mf.Br*2*pi*r*N0)
change : mf.Br => constant input : 1 [T]
but another error has occurred.
" segregated solver steps do not involve all components. "
look at the image attached for a clearer picture. How do I set up the boundary conditions for this type of problem.
Thank you.