Abstract
Stochastic models of bounded velocity transport are revisited. It is proven that these models exhibit short-time propagative (as opposed to diffusive) behavior for a large class of initial conditions. Numerical simulations also show that this propagative effect is different from the damped propagation predicted by common hyperbolic models. A fit of the density profiles is finally presented and a geometrical generalization of Fick’s law is also proposed.
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This last condition is sufficient but not necessary for the extrema at \(\pm\,{{x}^*}(t)\) to be maxima. The necessary and sufficient condition is \(D^* = - 3 \gamma ^* - \gamma ^{*3} \varvec{\Phi }^{\prime \prime }\left( \gamma ^* \right) <0\).
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Part of this work was funded by the ANR Grant 09-BLAN-0364-01.
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Debbasch, F., Espaze, D., Foulonneau, V. (2014). Ballistic Behaviour in Bounded Velocity Transport. In: Kim, H., Ao, SI., Amouzegar, M., Rieger, B. (eds) IAENG Transactions on Engineering Technologies. Lecture Notes in Electrical Engineering, vol 247. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6818-5_12
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DOI: https://doi.org/10.1007/978-94-007-6818-5_12
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