Peak hours for demand

Hey friends

I am facing a problem to generate a random input for demands arising in an inventory system
How can we give a random input considering the fact that the
a) peak demands occur at the mid of the day
b) there are 2 peaks in a day

I am currently generating the random demand pattern in excel and importing it into Flexsim. I do not feel this is correct as I am intentionally generating the peak.

Kindly help.

Thanks
Lavania

Has anybody got a solution for this?

Could you explain more exactly what you are looking for?
Maybe with a small example. And why standard function of Source doesn´t do what you want.

Dear Sebastian

I am new to Flexsim and thanks for taking interest in my query.

This is what I require:
Task executors have to carry out a random picking as per the demands arising in a warehouse. I have given the pick-list in global table. The arrival pattern of these pick-lists over a day is where I am facing a problem. These demands are at their peak in the mid of the day. How to generate this spike in the demand pattern considering the fact that I want randomness coming into the picture.

Regards
Lavania

A general solution for these type of problems is the use of a table with a number of picks per hour (or a distribution) and then use processor with a uniform distribution to generate the random arrival pattern.

Use a source to generate a product every hour, send it to a seperator and on the seperator look up in the table or generate with a distribution, the number of products for that hour, then send those to a processor with a large capacity and a processtime of uniform(0,3600) and then you have a random arrival pattern with possibility to create peak arrivals.

Thank you Steven

But I have a small doubt, is it appropriate if I define the table with no. of picks per hour? It will not remain random right? Won't I have to modify it for every iteration?

Regards
Lavania

Then you take 2 columns in your table one with minimum and one with maximum and instead of using the table values directly you put them in a duniform distribution. (or make any other distribution that you want,but the idea is that you use the table for input in your distribution instead of using the numbers directly)