Research interests 
Finite element methods, incompressible flow simulation, (nearly) incompressible elasticity, multiphase flow, level set method, reinitialization, Navier-Stokes equations, preconditioning, numerics of aerosol formation 
 
PUBLICATIONS 
 
Journal articles 
 
M. Nordlund, D. J. Lopez Penha, S. Stolz, A. Kuczaj, Ch. Winkelmann, B. J. Geurts : A new analytical model for the permeability of anisotropic structured porous media. International Journal of Engineering Science, Vol. 68, 2013, p. 38-60 
 
B. J. Geurts, P. Pratte, S. Stolz, R. Stabbert, V. Poux, M. Nordlund, Ch. Winkelmann: Penetration of sub-micron aerosol droplets in composite cylindrical filtration elements. International Journal of Heat and Fluid Flow, Vol. 32, No. 1, Feb. 2011, p. 261-272 
 
PhD Thesis 
 
Ch. Winkelmann: Interior penalty finite element approximation of Navier-Stokes equations and application to free surface flows 
PhD thesis advised by Prof. Alfio Quarteroni at École polytechnique fédérale de Lausanne, 2007 
 
Conference papers 
 
L. Ghazaryan, D. J. Lopez Penha, B. J. Geurts, S. Stolz and Ch. Winkelmann: Simulation of impaction filtration of aerosol droplets in porous media. Fitfth European Conference on Computational Fluid Dynamics ECCOMAS CFD 2010, 14-17 June 2010, Lisbon, Portugal. 
 
L. Ghazaryan, D. J. Lopez Penha, B. J. Geurts, S. Stolz and Ch. Winkelmann: Simulation of impaction filtration by a porous filter. AIP Conf. Proc. 1254, pp. 129-134. 3rd International Conference on Porous Media and its Applications in Science, Engineering, and Industry, 20-25 June 2010, Montecatini, Italy. 
 
Posters 
 
Ch. Winkelmann, A. K. Kuczaj, S. Stolz, B. J. Geurts: Multi-scale modeling of aerosol formation in pipe flow at European Aerosol Conference 2011, 4-9 Sept 2011, Manchester. 
 
Ch. Winkelmann: 3D Implementation of Continuous Interior Penalty FEM for Incompressible Navier-Stokes Equations (with Free Surface). Swiss Numerics Colloquium 2005, Zurich. 
 
Talks 
 
Public defense of PhD thesis: Slides • Movie 1, Movie 2, Movie 3, Movie 4 
 
Private defense of PhD thesis, Slides • Movie 1, Movie 2, Movie 3 
 
3D Navier-Stokes simulations with and without free surface: Slides 
internal seminar at CMCS 
 
Technical reports 
 
Ch. Winkelmann: A Discontinuous Galerkin Scheme for Elastic Waves in Nearly Incompressible Materials. 
Diploma thesis advised by Prof. R. Hiptmair at Swiss Federal Institute of Technology Zurich, 2004 
abstract • full text 
 
Ch. Winkelmann: A Finite Volume Nonhydrostatic Atmospheric Model for the Simulation of Mountain Waves. 
Term project advised by Prof. C. Schär at Swiss Federal Institute of Technology Zurich, 2004 
abstract • full text 
 
A. Burri, Ch. Winkelmann: Formulation and Implementation of a Finite Volume Discontinuous Galerkin Scheme for Nonlinear Convection Diffusion Problems. 
Term project advised by Prof. C. Schwab at Swiss Federal Institute of Technology Zurich, 2003 
abstract • full text