C. Garibotti

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We consider upscaling of non-Darcy flow in heterogeneous porous media. Our approach extends the pressure-based numerical homogenization procedure for linear Darcy flow, due to Durlofsky, to the nonlinear case. The effective coefficients are not constants but rather mildly varying functions of prevailing gradients of pressure. The upscaled model approximates(More)
Projectile charge dependence of double differential ionisation cross section for H' and ~e:* on He is studied both theoretically and experimentally. The experimental ratio R of the emission induced by 50 and 100 keV/u H+* and H' is compared with calculations from the CDW-EIS model. We report two main effects: a) a decrease of R with increasing angle of(More)
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