Energy efficiency of consecutive fragmentation processes

Details Energy efficiency of consecutive fragmentation processes Energy efficiency of consecutive fragmentation processes

2010-02-18

arxiv.org/abs/1002.3460v1

Mathematics

Probability

Scientific paper

We present a ?rst study on the energy required to reduce a unit mass fragment by consecutively using several devices, as it happens in the mining industry. Two devices are considered, which we represent as different stochastic fragmentation processes. Following the self-similar energy model introduced by Bertoin and Martinez, we compute the average energy required to attain a size x with this two-device procedure. We then asymptotically compare, as x goes to 0 or 1, its energy requirement with that of individual fragmentation processes. In particular, we show that for certain range of parameters of the fragmentation processes and of their energy cost-functions, the consecutive use of two devices can be asymptotically more efficient than using each of them separately, or conversely.

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