By Peter A. Markowich

ISBN-10: 3540346457

ISBN-13: 9783540346456

This ebook provides chosen subject matters in technological know-how and engineering from an applied-mathematics perspective. The defined normal, socioeconomic, and engineering phenomena are modeled through partial differential equations that relate kingdom variables resembling mass, pace, and effort to their spatial and temporal diversifications. in most cases, those equations are hugely nonlinear; in lots of circumstances they're platforms, and so they signify demanding situations even for the main glossy and complex mathematical and numerical-analytic recommendations. the chosen themes mirror the longtime clinical pursuits of the writer. They comprise flows of fluids and gases, granular-material flows, organic procedures corresponding to development formation on animal skins, kinetics of rarified gases, unfastened obstacles, semiconductor units, and socioeconomic approaches. every one subject is in short brought in its clinical or engineering context, via a presentation of the mathematical versions within the type of partial differential equations with a dialogue in their simple mathematical homes. the writer illustrates each one bankruptcy by way of a chain of his personal top quality images, which exhibit that partial differential equations are strong instruments for modeling a wide number of phenomena influencing our day-by-day lives.

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**Extra info for Applied Partial Differential Equations: A Visual Approach**

**Example text**

C. Evans, M. Feldman and R. Gariepy, Fast/slow Diffusion and collapsing Sandpiles, J. Differential Equations 137, pp. 166–209, 1997 [4] G. D. Thesis, Universität Stuttgart, Institut für Computeranwendungen, Logos Verlag Berlin, 2001 [5] G. Toscani, Hydrodynamics from the dissipative Boltzmann equation, in Mathematical models of granular matter, Lecture Notes in Mathematics, Springer, G. Capriz, P. M. Mariano Edts, (in press) (2006)7 [6] C. Villani, Mathematics of Granular Materials, to appear in J.

Just one stable configuration, out of many possible ones… Fig. 10. Pattern of wind ripples, Death Valley California 3 Granular Material Flows 52 3 Granular Material Flows 53 Fig. 11. A granular (pattern) equilibrium state in a Zen garden in Kyoto, Japan Fig. 12. A stable pile of small pebbles in a Zen garden in Kyoto, Japan. For the modeling of the growth, collapse and stability of piles of granular materials, in the context of the Monge– Kantorovich mass transportation theory, using p-Laplace equations we refer to the survey of L.

So far, there still is a poor understanding of how to model granular materials mathematically. Most of the knowledge is empirical and no general approach for analyzing these flows exists. So what can the mathematical modeling be based upon? Clearly, granular material flows are a special topic in the physics of dissipative systems, consisting of dilute systems of inelastically colliding particles. As common for open systems, granular materials reveal a rich variety of self-organized structures such as large scale clusters, vortex fields, characteristic shock waves and others, which are still far from being completely understood.

### Applied Partial Differential Equations: A Visual Approach by Peter A. Markowich

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