88 citations · 243 across the 8 of their papers we have counts for
8 papers
Prediction of equivalent sand-grain size and identification of drag-relevant scales of roughness -- a data driven approach
Jiasheng Yang, Alexander Stroh, Sangseung Lee +3
The purpose of the present work is to examine two possibilities; firstly, predicting equivalent sand-grain roughness size based on the roughness height probability density fu…
Tripping and laminar--turbulent transition: Implementation in RANS--EVM
N. Tabatabaei, G. Fahland, A. Stroh +5
Fundamental fluid--mechanics studies and many engineering developments are based on tripped cases. Therefore, it is essential for CFD simulations to replicate the same forced trans…
DNS-based characterization of pseudo-random roughness in minimal channels
Jiasheng Yang, Alexander Stroh, Daniel Chung +1
Direct numerical simulation is used to study turbulent flow over irregular rough surfaces in the periodic minimal channel configuration. The generation of irregular rough surface i…
Predicting drag on rough surfaces by transfer learning of empirical correlations
Sangseung Lee, Jiasheng Yang, Pourya Forooghi +2
Recent developments in neural networks have shown the potential of estimating drag on irregular rough surfaces. Nevertheless, the difficulty of obtaining a large high-fidelity data…
Machine learning for rapid discovery of laminar flow channel wall modifications that enhance heat transfer
Yuri Koide, Arjun J. Kaithakkal, Matthias Schniewind +3
Numerical simulation of fluids plays an essential role in modeling many physical phenomena, which enables technological advancements, contributes to sustainable practices, and expa…
Rearrangement of secondary flow over spanwise heterogeneous roughness
A. Stroh, K. Schäfer, B. Frohnapfel +1
Turbulent flow over a surface with streamwise-elongated rough and smooth stripes is studied by means of direct numerical simulation (DNS) in a periodic plane open channel with full…
Assessment of skin-friction-reduction techniques on a turbulent wing section
M. Atzori, R. Vinuesa, A. Stroh +2
The scope of the present project is to quantify the effects of uniform blowing and body-force damping on turbulent boundary layers subjected to a non-uniform adverse-pressure-gradi…
Global effect of local skin friction drag reduction in spatially developing turbulent boundary layer
A. Stroh, Y. Hasegawa, P. Schlatter +1
A numerical investigation of two locally applied drag reducing control schemes is carried out in the configuration of a spatially developing turbulent boundary layer (TBL). One con…