Simulating Pulse in Ansys
Simulating Pulse in Ansys
(OP)
Has anyone simulates Pulse application (Semiconductor Laser) using Ansys. How do you input load as a function of time as I have power turned ON for 0.5sec and turned OFF for 0.5sec. I would like to see the temperature rise during Pulse operation.
Thanks.
Thanks.





RE: Simulating Pulse in Ansys
Probably, the best way to learn how to simulate transient thermal analysis is to read Transient Thermal Analysis chapter in Thermal Analysis Guide. Use *DIM command to specify TABLE and then fill it manually or through *TREAD command. All these steps can be done via Utility Menu-Parameters-Array Parameters-Define/Edit (manually) or: Utility Menu-Parameters-Array Parameters-Define/Edit (then)-Read From File (files are in *.dat or *.txt formats, one column is TIME another one is TEMP). Personally, I prefer to work with tables. For Temp vs. Time set Parameter Type as Table then specify # of rows and set # of columns to 1. In the row variable (Var 1) field type TIME, then fill temperature vs. time steps as you wish. Good luck.
RE: Simulating Pulse in Ansys
Thanks
RE: Simulating Pulse in Ansys
This issue is about temperature profile as a function of time. I can harder understand it in terms of ON and OFF. For instance, OFF means that a heater has no power input? In this case you would better take into an account the transient process since a heater still has a temperature (declining, but m.b sufficient enough to keep your system warming up). There are several other scenarios depending on the particular system, but most of them utilize transient analysis. I would use here the iterative method which is developed good enough in ANSYS, using temperature or generated heat as a parameter.
GL.
RE: Simulating Pulse in Ansys
via table,
applying a TEMPerature on a node:
*DIM,pulselo,TABLE,4,1, ,TIME
PULSELO(1,0,1) = 0 ! time=0 load=0
PULSELO(2,0,1) = 1 ! time=1
PULSELO(2,1,1) = 222 ! load=222
PULSELO(3,0,1) = 2 ! time= 2
PULSELO(3,1,1) = 222 ! load=222
PULSELO(4,0,1) = 3 ! time=3 load=0
BF,123,TEMP, %pulselo% ! insert the table load on Node 123
cheers,
saber
BFLIS, ALL ! List bodyforce load on nodes