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- Ali Zein, Maren Hantke, Gerald Warnecke
- J. Comput. Physics
- 2010

- A. V. Martin, F. Wang, +29 authors H. N. Chapman
- 2012

The resolution of single-shot coherent diffractive imaging at X-ray free-electron laser facilities is limited by the low signal-to-noise level of diffraction data at high scattering angles. The iterative reconstruction methods, which phase a continuous diffraction pattern to produce an image, must be able to extract information from these weak signals to… (More)

- N D Loh, C Y Hampton, +54 authors M J Bogan
- Nature
- 2012

The morphology of micrometre-size particulate matter is of critical importance in fields ranging from toxicology to climate science, yet these properties are surprisingly difficult to measure in the particles' native environment. Electron microscopy requires collection of particles on a substrate; visible light scattering provides insufficient resolution;… (More)

We consider the isothermal Euler equations with phase transition between a liquid and a vapor phase. The mass transfer is modeled by a kinetic relation. We prove existence and uniqueness results. Further, we construct the exact solution for Riemann problems. We derive analogous results for the cases of initially one phase with resulting condensation by… (More)

A class of non-equilibrium models for compressible multi-component fluids in multi-dimensions is investigated taking into account viscosity and heat conduction. These models are subject to the choice of interfacial pressures and interfacial velocity as well as relaxation terms for velocity, pressure, temperature and chemical potentials. Sufficient… (More)

<lb>The classical two-phase flow model of Baer and Nunziato is generalized to a thermody-<lb>namic consistent multi-component model in multi dimensions. The extended model allows<lb>to deal with phase transitions where exchange processes are modeled by relaxation terms.<lb>In particular, chemical relaxation is based on chemical potentials instead of Gibbs… (More)

Abstract. We determine completely the exact Riemann solutions for the system of Euler equations in a duct with discontinuous varying cross–section. The crucial point in solving the Riemann problem for hyperbolic system is the construction of the wave curves. To address the difficulty in the construction due to the nonstrict hyperbolicity of the underlying… (More)

- Ee Han, Maren Hantke, Siegfried Müller
- J. Comput. Physics
- 2017

- BODO DITTMAR, MAREN HANTKE, P. L. Duren
- 2007

The paper deals with the Robin function and eigenvalue problems generated by the Robin operator. First we show that Green’s function of an n-fold connected domain is the Robin function of an appropriate simply connected domain. The main part of the paper deals with eigenvalue problems for the Robin operator: the mixed Stekloff eigenvalue problem and the… (More)

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