Papers by Michał Wichrowski
Tribology International, 2014
A mixed formulation of the mass-conserving cavitation model is developed. The cavitation problem ... more A mixed formulation of the mass-conserving cavitation model is developed. The cavitation problem is formulated in terms of the hydrodynamic pressure and a complementary variable representing the void fraction in the cavitation zone. Weak form of the mass-balance equation is consistently derived, and it exhibits subtle differences with respect to the available formulations. Finite element treatment preserves the two-field formulation, and a semi-smooth Newton method is applied to solve the resulting discretized equations. A monolithic Newton-based scheme is also applied to solve the fully coupled elastohydrodynamic lubrication problem in the soft-EHL regime. Numerical examples illustrate the performance of the computational scheme.
Chemical Engineering Science, 2015
We investigate pressure drop of foam filters experimentally and numerically. 10 ppi (pore-per-inc... more We investigate pressure drop of foam filters experimentally and numerically. 10 ppi (pore-per-inch), 20 ppi and 30 ppi foams of porosity 75-79% are used. Experiments are done in water channel, simulations use D3Q19 MRT-LBM. Excellent agreement between simulations and experiment is reported. Comparison to external data and correlations yields varying outcomes.
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Papers by Michał Wichrowski