Dr.-Ing. Benjamin Krank

Doctoral Candidate at LNM

Research Fields

PhD Thesis

B. Krank, Wall Modeling via Function Enrichment for Computational Fluid Dynamics, Technical University of Munich, 2019. PDF

Publications

Articles in Peer-Reviewed International Journals

B. Krank, M. Kronbichler, W.A. Wall, Direct numerical simulation of flow over periodic hills up to Re_H=10595, Flow, Turbulence and Combustion 101 (2018) 521-551. DOI Download DNS data on mediaTUM DOI
B. Krank, M. Kronbichler, W.A. Wall, Wall modeling via function enrichment: extension to detached-eddy simulation, Computers & Fluids 179 (2019) 718-725 . DOI
B. Krank, M. Kronbichler, W.A. Wall, A multiscale approach to hybrid RANS/LES wall modeling within a high-order discontinuous Galerkin scheme using function enrichment, International Journal for Numerical Methods in Fluids 90 (2019) 81-113. DOI
B. Krank, M. Kronbichler, W.A. Wall, Wall modeling via function enrichment within a high-order DG method for RANS simulations of incompressible flow, International Journal for Numerical Methods in Fluids 86 (2018) 107-129. DOI
B. Krank, N. Fehn, W.A. Wall, M. Kronbichler, A high-order semi-explicit discontinuous Galerkin solver for 3D incompressible flow with application to DNS and LES of turbulent channel flow, Journal of Computational Physics 348 (2017) 634-659. DOI
G. Kreiss, B. Krank, G. Efraimsson, Analysis of stretched grids as buffer zones in simulations of wave propagation, Applied Numerical Mathematics 107 (2016) 1-17. DOI
B. Krank, W.A. Wall, A new approach to wall modeling in LES of incompressible flow via function enrichment, Journal of Computational Physics 316 (2016) 94-116. DOI

Articles in International Conference Proceedings

M. Kronbichler, B. Krank, N. Fehn, S. Legat, W. A. Wall, A new high-order discontinuous Galerkin solver for DNS and LES of turbulent incompressible flow, in: New Results in Numerical and Experimental Fluid Mechanics XI pp. 467-477, 2018, contributions to the 20^th STAB/DGLR Symposium, Braunschweig, November 8-9, 2016. DOI
G. Efraimsson, G. Kreiss, B. Krank, Analysis of stretched grids as buffer zones in aero-acoustic simulations in two space dimensions. 22^nd International Congress on Sound and Vibration (ICSV22), Florence, Italy, July 12-16, 2015. PDF
B. Krank, W.A. Wall, A novel approach for wall modeling in LES of wall-bounded high-Reynolds-number flow via function enrichment. in: Direct and Large-Eddy Simulation X, pp. 191-197, Springer, 2018, contributions to the Ercoftac Workshop Direct and Large-Eddy Simulation 10 (DLES10), Limassol, Cyprus, May 27-29, 2015. DOI
B. Krank, G. Efraimsson, Evaluating stretched grids and introducing black hole layers as alternative non-reflecting buffer zone. In: Collection of Technical Papers of the 19^th AIAA/CEAS Aeroacoustics Conference, Berlin, Germany, May 27-29, 2013, AIAA-2013-2220.
B. Krank, U. Ohlsson, A. Hedlund, L. Nordström, T. Englund, P. Göransson, Tuning spot weld models for vehicle body structural dynamics. In: Proceedings of International Conference on Noise and Vibration Engineering (ISMA2012), Leuven, Belgium, September 17-19, 2012. PDF

Presentations

B. Krank, Wall modeling via function enrichment for computational fluid dynamics, invited talk at IAG Stuttgart, April 24, 2018.
B. Krank, M. Kronbichler, S. Legat, N. Fehn, W.A. Wall, Flow over periodic hills: DNS, LES and hybrid RANS/LES using a high-order incompressible discontinuous Galerkin solver. Ercoftac Workshop Direct and Large-Eddy Simulation 11 (DLES11), Pisa, Italy, May 29-31, 2017.
B. Krank, M. Kronbichler, N. Fehn, W. A. Wall, A high-order discontinuous Galerkin solver for DNS, LES and wall-modeled LES of incompressible flow, iTi 2016 Conference on Turbulence VII, Bertinoro, Italy, September 7-9, 2016.
B. Krank, M. Kronbichler, W.A. Wall, A discontinuous Galerkin solver for the simulation of incompressible turbulent flow. 11^th International Workshop on Variational Multiscale and Stabilized Finite Elements (VMS2016), Magdeburg, Germany, March 16-18, 2016.
B. Krank, Wall modeling for large-eddy simulation of incompressible flow using function enrichment, invited talk at NAM-Colloquium, Göttingen, January 19, 2016.
B. Krank, A new wall model for large-eddy simulation within the extended finite element method, invited seminar talk, Göttingen, May 6, 2015.
B. Krank, W.A. Wall, Wall modeling via function enrichment within a variational multiscale method for large-eddy simulation of high-Reynolds-number turbulent flow. 10^th International Workshop on Variational Multiscale and Stabilized Finite Elements (VMS2015), Garching, February 25-27, 2015.

Teaching

Courses

Supervised Student Projects/Theses

Stefan Legat: Implementation of a direction-dependent sum-factorization algorithm for enriched finite elements, HiWi, 2016.
Stefan Legat: Advancement of a semi-explicit discontinuous Galerkin approach for simulation of turbulent incompressible flow, Master thesis, 2016.
Florian Wirth: Improvement of teaching material for course "Finite Elemente in der Fluidmechanik", HiWi, 2016.
Gurvan Hermange: Extension of an enrichment-based wall model to complex geometries, term paper (Semesterarbeit), 2016.
Charles Giachetti: Investigation of an enrichment-based wall model applied to a cylinder in turbulent axial flow, term paper (Semesterarbeit), 2016.
Deniz Bezgin: Investigation of explicit scale-separation approaches for HDG, Bachelor thesis, in German, 2015.
Matthias Kufner: Investigation of a quadrature scheme for high-gradient enrichments, term paper (Semesterarbeit), in German, 2015.
Stefan Legat: Development of a coupled Navier-Stokes and scalar transport code in Matlab, HiWi, 2015.
Markus Koschi: Better consistency of residual-based stabilization for linear finite elements applied to the incompressible Navier-Stokes equations, term paper (Semesterarbeit), 2015.
Stephan Jäger: Investigation of a wall model for large-eddy simulation of the periodic hill, term paper (Semesterarbeit), 2015.
Sebastian Büchner: Investigation of subgrid scale models for LES of a generic blood flow, term paper (Semesterarbeit), 2014.

Figure 1. Wall-modeled large-eddy simulation of flow past periodic hills at Re = 10,595

Figure 2. Direct numerical simulation of turbulent channel flow at Re_tau = 590 using INDEXA with a discretization of 131 million degrees of freedom