Monte carlo simulation problem

Question

Hello

Why Monte Carlo simulation is not performed when in the LCA model there are some amounts set to zero?

I could have some situations where the amount is defined by formula and the result could be zero.

In these situations Monte Carlo starts but immediately ends without results.

Someone can explain how I can avoid this situation.

Thanks

Answer 1

This should not be the case. To help understand your issue further can you mention the database you are using and the data quality system (or how you set your uncertainty in your inputs/output process) ?

Comments

I'm using Ecoinvent 3.12 cut off.
Data quality system is the one with ecoinvent for process and flow.
openLCA version 2.6.1 but I had the same problem with previous versions.

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Can you post a picture of your process from which you perform the monte carlo simulation?

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I posted the pictures you requested.

Answer 2

Here the process.

First picture you can see the formula

in this one you can see the results. Some data are zero due to the calculation. If I perform Monte Carlo analisys it does not work. If I remove zeros it works.