User`s guide

Release 7.5 MADYMO Coupling Manual

(e) Constraint of a jet to external FE nodes

FE_CRDSYS under JET.* (except JET.GAS_FLOW_ELEMENT) now facilitates con-

necting a jet to an external coupled ﬁnite element model. An example which illus-

trates the usage:

<SYSTEM.MODEL

ID="10"

NAME="coupling_system.model"

<FE_MODEL

ID="1"

NAME="coupling_fe_model"

<CONTROL_FE_MODEL/>

<CONTROL_FE_TIME_STEP/>

<FE_CRDSYS.NODE

ID="1000"

NAME="fe_jet_sup_external"

NODE1="8"

NODE2="9"

NODE3="5"

....................

</FE_MODEL>

</SYSTEM.MODEL>

....................

<JET.IDELCHIK

ID="1"

FE_CRDSYS="/10/1/1000"

CENTRE="0.19574338 0.19574338 0.19574338"

OUTFLOW_DIR="1.0 0.0 0.0"

<JET_SHAPE.RECTANGULAR

LONG_LENGTH="0.01"

SHORT_LENGTH="0.01"

LONG_DIR="0.0 1.0 0.0"

</JET.IDELCHIK>

3.3 Troubleshooting

The user is advised to check the following topics when having trouble in getting the simulation

to run properly:

• Look at all warnings and errors, both from MADYMO as well as the PARTNER program.

• Make sure that the data send from the PARTNER program is in SI units. Some partners

allow non-SI units to be used. Use the appropriate conversion factors to force sending

all data in SI units.

• Is the MPI environment installed correctly and working OK?

• View the kinematic output from both MADYMO and the PARTNER on top of each other.

Have a close look at the data that is send to the other program: is it moving simultane-

ously (and as expected) in both output ﬁles? If not, you probably put some kinematic