6 papers
Permeability and turbulence over perforated plates
Haris Shahzad, Stefan Hickel, Davide Modesti
We perform direct numerical simulations of turbulent flow at friction Reynolds number grazing over perforates plates with moderate viscous-scaled orifice dia…
Low-frequency unsteadiness mechanisms in shock wave/turbulent boundary layer interactions over a backward-facing step
Weibo Hu, Stefan Hickel, Bas W. van Oudheusden
The low-frequency unsteady motions behind a backward-facing step (BFS) in a turbulent flow at and is investigated using a well-resolved large…
Customized data-driven RANS closures for bi-fidelity LES-RANS optimization
Yu Zhang, Richard P. Dwight, Martin Schmelzer +3
Multi-fidelity optimization methods promise a high-fidelity optimum at a cost only slightly greater than a low-fidelity optimization. This promise is seldom achieved in practice, d…
Rapid multi-component phase-split calculations using volume functions and reduction methods
Mohamad Fathi, Stefan Hickel
We present a new family of fast and robust methods for the calculation of the vapor-liquid equilibrium at isobaric-isothermal (PT-flash), isochoric-isothermal (VT-flash), isenthalp…
Rossby Number Effects on Columnar Eddy Formation and the Energy Dissipation Law in Homogeneous Rotating Turbulence
Tiago Pestana, Stefan Hickel
Two aspects of homogeneous rotating turbulence are quantified through forced Direct Numerical Simulations in an elongated domain, which is in the direction of rotation about …
Regime Transition in the Energy Cascade of Rotating Turbulence
Tiago Pestana, Stefan Hickel
Transition from a split to a forward kinetic energy cascade system is explored in the context of rotating turbulence using direct numerical simulations with a three-dimensional iso…