Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Klose, Bjoern F."'
When a chordwise Reynolds number (Re) falls below about $10^5$ the performance of wings and aerodynamic sections become sensitive to viscous phenomena, including boundary layer separation and possible reattachment. Here, detailed measurements of the
Externí odkaz:
http://arxiv.org/abs/2411.05926
We revisit recently published high-fidelity implicit large eddy simulation datasets obtained with a high-order discontinuous Galerkin spectral element method and analyse them using Proper Orthogonal Decomposition (POD) as well as Spectral Proper Orth
Externí odkaz:
http://arxiv.org/abs/2403.00146
Autor:
Morsbach, Christian, Bergmann, Michael, Tosun, Adem, Klose, Bjoern F., Kügeler, Edmund, Franke, Matthias
We present results of implicit large eddy simulation (LES) and different Reynolds-averaged Navier-Stokes (RANS) models of the MTU 161 low pressure turbine at an exit Reynolds number of 90,000 and exit Mach number of 0.6. The LES results are based on
Externí odkaz:
http://arxiv.org/abs/2305.01390
Autor:
Santhosh, Sreejith, Qin, Haodong, Klose, Bjoern F., Jacobs, Gustaaf B., Vétel, Jérôme, Serra, Mattia
We develop a frame-invariant theory of material spike formation during flow separation over a no-slip boundary in three-dimensional flows with arbitrary time dependence. Based on the exact evolution of the largest principal curvature on near-wall mat
Externí odkaz:
http://arxiv.org/abs/2302.12395
A closed and predictive particle cloud tracer method is presented. The tracer builds upon the Subgrid Particle Averaged Reynolds Stress Equivalent (SPARSE) formulation first introduced in [Davis et al., Proceedings of the Royal Society A, 473(2199),
Externí odkaz:
http://arxiv.org/abs/2206.01528
A comprehensive and detailed overview of the flow topology over a cambered NACA 65(1)-412 airfoil at Re = 20,000 is presented for angles of attack ranging from 0{\deg} to 10{\deg} using high-order direct numerical simulations. It is shown that instab
Externí odkaz:
http://arxiv.org/abs/2108.04910
A kinematic approach for the identification of flow instabilities is proposed. By defining a flow instability in the Lagrangian frame as the increased folding of lines of fluid particles, subtle perturbations and unstable growth thereof are detected
Externí odkaz:
http://arxiv.org/abs/2009.05851
Kinematic aspects of flow separation in external aerodynamics are investigated in the Lagrangian frame. Specifically, the initial motion of upwelling fluid material from the wall is related to the long-term attracting manifolds in the flow field. Whi
Externí odkaz:
http://arxiv.org/abs/1909.04129
Publikováno v:
In International Journal of Multiphase Flow April 2023 161
Publikováno v:
In Computers and Fluids 15 June 2020 205