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Dustin S avatar image
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Dustin S asked Matthew Gillespie edited

Arrival Times throughout a week period

In my model I am currently using sources to generate arrivals using a distribution. Now that I have the model working I am trying to make these arrivals based on data. I read though the forums and didn't really find an answer. First, I was wondering if it is possible to change the time in FlexSim so instead of seconds it will count by say hours throughout a week. I saw at the top you can change the time, but it changes it to the current day.

From this, I wanted the arrivals to be based on a data table. This table would include the arrivals for every hour, for every day throughout the week. Then I could just put in how many arrivals I wanted throughout every hour period, and they would be randomly generated throughout the hour when running the simulation. I saw something similar in FlexSim healthcare (custom arrivals) but cannot seem to find something like this. Below is my current model as a reference.

FlexSim 17.1.1
arrival pattern
model-ab-1-2-autosave.fsm (998.6 KiB)
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1 Answer

Sam Stubbs avatar image
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Sam Stubbs answered Dustin S commented

You can set the time units of the model, but this really needs to be done at the beginning of the model. When you create a new model, that's what that window at the beginning asks. If you change the model units half-way through the project, then the other calculations based off of those time units will be skewed. So before you go further, I would create a new model with the time units that you actually intend to use. Else you'll have to convert the model's time units yourself, which is also a possibility.

After that, yes, you can set the arrivals based on a schedule table. If using a source, select Arrival schedule from the Arrival type, in the sources properties. IF you are using Process Flow, have your tokens generated by a scheduled source instead of an inter arrival source.

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Dustin S avatar image Dustin S commented ·

For example if my a single arrival time is at 12:31 p.m. would you recommend making the model in units of hours since I could then make the arrival rates of 4 for the period of noon-1 p.m.?

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