Discussion Forum

Hi Everyone,

I am a new ComSol user at the National University of Singapore and am excited to get LiveLink up and running so that I can use Matlab in tandem with ComSol.

I am using Comsol 5.1 and Matlab 2015a

I have come across a very irritating problem as I am trying to construct a model using LiveLink. I am trying to use the Radio Frequency (RF) constructor and the 'emw' interface. When I do this through ComSol without LiveLink, this is no problem at all. However, in MatLab using LiveLink, the following error surfaces:

__________

Error using plasmaTest1 (line 14)
Java exception occurred:
Exception:
com.comsol.util.exceptions.FlException: Failed to initialize
physics interface
(rethrown as com.comsol.util.exceptions.FlException)
(rethrown as com.comsol.util.exceptions.FlException)
Messages:
Failed to initialize physics interface

Failed to initialize physics interface

Failed to initialize physics interface.

Unknown physics interface.
- Physics interface: RF


Stack trace:

at com.comsol.clientapi.engine.c.handleException(Unkn​own
Source)

at com.comsol.client.interfaces.f$d.f(Unknown Source)

at com.comsol.client.interfaces.f.a(Unknown Source)

at com.comsol.client.interfaces.f.runAndWait(Unknown Source)

at com.comsol.clientapi.engine.APIEngine.runMethod(Un​known
Source)

at com.comsol.clientapi.impl.PhysicsListClient.create​(Unknown
Source)

Caused by: Exception:
com.comsol.util.exceptions.FlException: Failed to initialize
physics interface
(rethrown as com.comsol.util.exceptions.FlException)
Messages:
Failed to initialize physics interface

Failed to initialize physics interface.

Unknown physics interface.
- Physics interface: RF


at com.comsol.clientapi.engine.c.handleException(Unkn​own
Source)

at com.comsol.client.interfaces.f.a(Unknown Source)

at
com.comsol.client.interfaces.f.processCommandAnswe​r(Unknown
Source)

... 5 more

Caused by: Exception:
com.comsol.util.exceptions.FlException: Failed to initialize
physics interface
Messages:
Failed to initialize physics interface.

Unknown physics interface.
- Physics interface: RF


at com.comsol.model.method.PhysicsMethod.initialize(U​nknown
Source)

at
com.comsol.model.internal.physics.impl.PhysicsImpl​.initialize(Unknown
Source)

at
com.comsol.model.internal.impl.PhysicsListImpl.int​ernalAdd(Unknown
Source)

at
com.comsol.model.internal.impl.PhysicsListImpl.int​ernalAdd(Unknown
Source)

at com.comsol.model.method.PhysicsListMethod.create(U​nknown
Source)

at com.comsol.model.internal.impl.PhysicsListImpl.a(U​nknown
Source)

at com.comsol.model.internal.impl.PhysicsListImpl.a(U​nknown
Source)

at com.comsol.model.internal.impl.PhysicsListImpl$2.a​(Unknown
Source)

at
com.comsol.model.internal.impl.PhysicsListImpl$2.e​xecute(Unknown
Source)

at com.comsol.model.clientserver.ClientManager$1.call​(Unknown
Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(​Unknown
Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run​(Unknown
Source)

at java.lang.Thread.run(Unknown Source)
__________

I have checked my 'comsolpath.txt' file in the 'bin' directory, and a line for the rf jar file exists. Also, the fact that I can use the constructor in the ComSol environment but not in LiveLink tells me that the error lies in LiveLink not accessing the correct file.

Can anyone suggest a solution?

I should add that when I try to do the same with model.physics.create('ht','HeatTransfer','geom1') I have no error at all.