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The different options to choose are:
Algorithm
·Optimization radius: iterative, optimizes distances and positions for minimum porosity.
(ref:Carlos Labra, Eugenio Oñate. High-density sphere packing for discrete element method simulations, Communications in Numerical Methods in Engineering 2009)
·Porosity predefined : iterative with fixed radius .Experimental.
·Explicit: iterative, radius defined with porosity and optimizes positions. (Experimental)
·Radius expansion : iterative, corrects positions and increases radius.
·Optimization radius fast: it's 'Optimization radius' with less precision. (Experimental)
·Position correction and inflate
·Optimization radius corrected
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