Being Public or Private cloud has nothing to do with cloudsim general release, you can customize your cloudsim to simulate some specs of privet cloud.

Thank you Yaser Jararweh for your answer, i ask you if you have an tutorial that explain how to customize CloudSim to simulate an Cloud Private or any other type of Cloud.

I suggest you to follow step-by-step the basic examples you can find in: http://www.cloudbus.org/cloudsim/examples.html. As a background, you may want to have a look at "CloudSim: a toolkit for modeling and simulation of cloud

computing environments and evaluation of resource provisioning algorithms" for having a basic understanding of the model. You should also be familiar with the concept of event-based simulation environments.

Thank you Mr Gaetano Anastasi for this explanation.