| | Magsimus Deluxe Tutorials -> Interacting Objects -> Running the Simulation |
We are now ready to run a simulation. This will be initiated from the main program Recording and Simulation toolbar (Fig. 12). Fig. 12. Main program Recording and simulation toolbar: 1 - Record button; 2 - Forward-play button; 3 - Reverse-play button; 4 - Pause button; 5 - Stop button; 6 - Replay-mode drop-down list.
Make sure that the Run in background box is unchecked in the Simulation frame in the main program toolbar then press the Run button that is located in the Simulation Controls frame. This begins the simulation. After a few moments, windows that will contain the graphs of the output data we defined previously will appear. These windows have the captions "[1/2] Current, I (mA) Vs. Iterations," "[2/1] Y-component electrical current field, HIey (Oe) Vs. Iterations" and "[3/1] Magnetization along external field, Mh (emu/cc) Vs. System external field amplitude, HextA (Oe)." Notice the group/component convention for the outputs. For example, [1/2] refers to the second component of the first group and [3/1] refers to the first component of the third group. The graphs of these outputs are traced out as the calculation progresses. The graph windows may initially be minimized, depending on the prevalent software environment settings. Restore the plot windows from their minimized states if need be; re-size and position them where they are visible, such as is done in Fig. 1. Now you can observe the full simulation as the components of the design interact with each other. By positioning the mouse pointer anywhere in the plot window, pressing and holding down the left mouse button, the coordinates in plot units of the location of the mouse pointer is displayed on the caption bar at the top of the window. Clicking with the right mouse button on a plot window launches a floating menu that can be used to store the plotted data to file or to send its graph to a printer. Remarks. For a static calculation such as this one, the duration of defined electric current profiles, motions and externally applied fields are given in terms of a finite number of incremental steps. During the calculation the solver advances these definitions one step at a time. In this example the rotary motion of the field probe and the first glancing motion leg of the biased field source ends after 20 steps. From then on, the probe remains stationary while the bias field source continues with its second motion leg which is a series of horizontal displacement to the right (when the design is viewed from the front). Both the electric currents feeding the first group and the external field applied to the system continually change all along. The duration of the external field variation eventually outlasts that of the electric current profile. When the defined duration of the electrical current profile elapses, the current source simply supplies a steady current equal to the value at which the signal profile terminated. The first group, being composed of non-magnets, is oblivious to changing magnetic fields. The magnetic state of the permanent magnet of the biased field source is also unaffected by the magnetic fields. The magnetic state of the array of cells however changes with applied field, which is a combination of the externally applied field, the field produced by currents in the first group and the field produced by the permanent magnet of the moving biased field source. Wait for the simulation to end (the status bar will read "Ready," and the Run button will become re-enabled).
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