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Old 10-15-2012
Ger Finan Ger Finan is offline
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Default Pulling from a queue depending on variable demand

Hi all.

I'm looking for some help with a model I'm looking to build.

I want to have a hub (queue), that feeds four distribution centers (queues). The demand in each distribution center will vary i.e. distribution center may require 10 units day 1 and 30 day 2, while center 2 may require 100 day 1 and 20 day 2.

Can anyone give me any advise on how to model this?

Thanks.
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Old 10-15-2012
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Sebastian Hemmann Sebastian Hemmann is offline
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I would use the Source with Arrival Shedule as Arrival Style. The Itemtype could be the number of your Aim. So you can use Pick Options in all other Objects ;-) Quantity you can set as you want and Arrival Time could manage your days.
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Thanks Sebastian. I'm going to have a look at that, and will let you know how I get on.
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Old 10-15-2012
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If you do not have a fixed demand by days and have distributions that determine demand on each day then you can use different distributions for different days. The way flexsim can detect time/day is if you use a fmod command on time and then write an if-else kind of logic. So lets say that the units you assume are minutes then day 1 ends on 1440 minutes.. You can use
if (fmod(time,1440) == 0) then demand = xyz distribution;

(offcourse you will have to mention the demand variable seperately)
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