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Thank you, Ankit. Bob

Yes, you are correct. The right answer is 1.7 mol/l. I will fix it tomorrow.

Dear Ankit,

Why if I carry out the following simulation command doesn't work

In[5]:= SystemModelPlot["WSMExercises.Ex3.MyModels.ElectricKettle"]

it complains with: "SystemModelPlot::nov: A list of variables to plot is required." But the simulation is correct because

In[8]:= SystemModelPlot["WSMExercises.Ex3.MyModels.ElectricKettle", "water.T"]

returns the correct plot. Even thought if I execute the solutions example

In[9]:= SystemModelPlot["WSMExercises.Ex3.Solutions.ElectricKettle"]

it is not mandatory to say "water.T" variable I don't understand why. Thanks for any clue. Regards,

The "Ventilation" component is simply an instance of "ThermalConductor" component from the Modelica->Thermal->HeatTransfer->Components package.

Session recordings from the Study Group can be watched from the webinar landing pages. (Registration is required.).

Apology for so many questions from me, perhaps one of the few newbies on the topic. Also was too busy to attend the thermal modellng session.

My question, the assignment asks to change the walls with "Ventilation" components. But I don't find such a component in "College thermal" nor by query of the packages which i've so far installed, Modellica, Modellica services, ModelPlug, Complex

Thanks for any tips.

Hi John,

Please drop me a mail at ankitn@wolfram.com and we can schedule a zoom meeting to troubleshoot this issue.

Thanks, Ankit

Maybe that sentence is better understood after watching you in the lesson, which my good fortune didn't permit in these dreadfully busy times. Achieved the same graph as in the notebook by dragging "car dynamics" from the plot area of the "pinned" simulation ... onto the car dynamics graph created from the simulation with the inerter. Which seems different than the wording in the notebook.

Are you using Mathematica 12.2 as well? I suspect the Mathematica instance is not able to connect to System Modeler.

Try running this in a new Mathematica instance:

Needs["PacletManager`"];
PacletDirectoryLoad["/path/to/your/SystemModeler/Mathematica/"];
RebuildPacletData[]

and then run this:

SystemModeler[{"WSMExercises.Ex6.MyModels.Inerter"}]

Can you help me understand In[23] failed? I tried both with and with out system model GUI launched, with the same result.

In[23]:= CreateSystemModel["WSMExercises.Ex7.MyModels.Wingnut", wingnut];

In[24]:= SystemModel["WSMExercises.Ex7.MyModels.Wingnut", "ModelicaDisplay"]

During evaluation of In[24]:= SystemModel::nomod: The model WSMExercises.Ex7.MyModels.Wingnut was not found.

Out[24]= SystemModel["WSMExercises.Ex7.MyModels.Wingnut", "ModelicaDisplay"]

Not clear to me what this means ...

Drag and drop the new Car dynamics graphic over the old one. The F1 car has changed its behavior.

Help > Documentation Center > Simulation Center - Plot Windows had nothing to say about this.

Help?

Thanks, Was watching you in today's review session, I must have missed it. Model looks exactly like the exercise sheet 3. "Create components and animations Exercise 4 Pendulum" On simulation the animation shows a swinging pendulum Y[x] plot show nothing. time plot shows r2[t]=1 constant r1[t]=0 constant. What might be wrong?

Yes

I can show it again during the review session today.

Ex 4 Pendulum. Y(x) plot of pendulum.r[1], pendulum.r[2] results in horizontal line pendulum.r[2]=0 for range -222e-18< pendulum.r[1]<+222e-18. Is there an instruction in the training I missed?

Hi Sergio - thanks. That was what i was looking for. RTFM helps more often than not.

There are different types of connectors in one domain (i.e. flangea resp flangeb in the mechanical translational domain). Could you please explain which connector has to be connected to which connector? For example: what is different when flangeb of a spring is connected to flangeb of a mass in comparison when flangeb of a spring is connected to flangea of a mass? There is also an arrow shown in the icons of Mechanics-Translational-Models. For example at the Mechanic-Translational-Model Spring and Mass and Damper and ElastoGap the arrow is always directed from a flangea to flangeb. What is the purpose or the concept behind this arrow?

Hi Ankit, Can you provide a quick guide to obtaining and installing the requisite C++ compiler? What was on the Mathematica site wasn't easy enough for me. I'm not at all familiar with that. I presume it is free? Thank-you.