40 citations · 113 across the 7 of their papers we have counts for
7 papers
Pressure dependence of olivine grain growth at upper mantle conditions
Filippe Ferreira, Marcel Thielmann, Robert Farla +2
The grain size of olivine influences mass and heat flux in Earth's upper mantle. We performed annealing experiments on synthetic olivine-pyroxene aggregates (6-13 vol.%) at 1-12 GP…
FeOOH instability at the lower mantle conditions
E. Koemets, T. Fedotenko, S. Khandarkhaeva +12
Goethite, α-FeOOH, is a major component among oxidized iron species, called rust, which formed as a product of metabolism of anoxygenic prokaryotes (1, 2) inhabiting the Earth from…
Tomographic Study of Internal Erosion of Particle Flows in Porous Media
Filippo Bianchi, Falk K. Wittel, Marcel Thielmann +2
In particle-laden flows through porous media, porosity and permeability are significantly affected by the deposition and erosion of particles. Experiments show that the permeabilit…
Tensile Stress Relaxation in Unsaturated Granular Materials
Filippo Bianchi, Marcel Thielmann, Roman Mani +2
The mechanics of granular media at low liquid saturation levels remain poorly understood. Macroscopic mechanical properties are affected by microscale forces and processes, such as…
Critical bursts in filtration
Filippo Bianchi, Marcel Thielmann, Lucilla de Arcangelis +1
Particle detachment bursts during the flow of suspensions through porous media are a phenomenon that can severely affect the efficiency of deep bed filters. Despite the relevance i…
Critical fragmentation properties of random drilling: How many random holes need to be drilled to collapse a wooden cube?
K. J. Schrenk, M. R. Hilário, V. Sidoravicius +4
A solid wooden cube fragments into pieces as we sequentially drill holes through it randomly. This seemingly straightforward observation encompasses deep and nontrivial geometrical…
Grain Scale Modeling of Arbitrary Fluid Saturation in Random Packings
Konstantin Melnikov, Roman Mani, Falk K. Wittel +2
We propose a model for increasing liquid saturation in a granular packing which can account for liquid redistribution at saturation levels beyond the well-studied capillary bridge…