Analysis of Separation in the Roughness Sublayer Using DNS Data and DANS/DEM Modelling of Roughness Effects
Chedevergne, F.; Yang, J.; Stroh, A.; Forooghi, P.
2025. Flow, Turbulence and Combustion, 114 (3), 713–735. doi:10.1007/s10494-024-00585-9

Data-Driven Approach for Predicting and Explaining Drag of Irregular Roughness in Turbulent Flow. PhD dissertation
Yang, J.
2025, January 21. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000177686

Drag prediction of rough-wall turbulent flow using data-driven regression
Shi, Z.; Habibi Khorasani, S. M.; Shin, H.; Yang, J.; Lee, S.; Bagheri, S.
2025. Flow, 5, Art.-Nr.: E5. doi:10.1017/flo.2024.33

Assessment of Roughness Characterization Methods for Data-Driven Predictions
Yang, J.; Stroh, A.; Lee, S.; Bagheri, S.; Frohnapfel, B.; Forooghi, P.
2024. Flow, Turbulence and Combustion, 113 (2), 275–292. doi:10.1007/s10494-024-00549-z

Flow resistance over heterogeneous roughness made of spanwise-alternating sandpaper strips
Frohnapfel, B.; Deyn, L. von; Yang, J.; Neuhauser, J.; Stroh, A.; Örlü, R.; Gatti, D.
2024. Journal of Fluid Mechanics, 980, 1–35. doi:10.1017/jfm.2024.40

Data-driven discovery of drag-inducing elements on a rough surface through convolutional neural networks
Shin, H.; Khorasani, S. M. H.; Shi, Z.; Yang, J.; Bagheri, S.; Lee, S.
2024. Physics of Fluids, 36 (9), Article no: 095172. doi:10.1063/5.0223064

Prediction of equivalent sand-grain size and identification of drag-relevant scales of roughness – a data-driven approach
Yang, J.; Stroh, A.; Lee, S.; Bagheri, S.; Frohnapfel, B.; Forooghi, P.
2023. Journal of Fluid Mechanics, 975, A34. doi:10.1017/jfm.2023.881

A comparison of hydrodynamic and thermal properties of artificially generated against realistic rough surfaces
Yang, J.; Velandia, J.; Bansmer, S.; Stroh, A.; Forooghi, P.
2023. International Journal of Heat and Fluid Flow, 99, Art.-Nr.: 109093. doi:10.1016/j.ijheatfluidflow.2022.109093

Shear response behavior of STF/kevlar composite fabric in picture frame test
Ma, Y.; Hong, X.; Lei, Z.; Bai, R.; Liu, Y.; Yang, J.
2022. Polymer Testing, 113, Art.-Nr.: 107652. doi:10.1016/j.polymertesting.2022.107652

Direct numerical simulation-based characterization of pseudo-random roughness in minimal channels
Yang, J.; Stroh, A.; Chung, D.; Forooghi, P.
2022. Journal of Fluid Mechanics, 941, Art.-Nr.: A47. doi:10.1017/jfm.2022.331

Predicting drag on rough surfaces by transfer learning of empirical correlations
Lee, S.; Yang, J.; Forooghi, P.; Stroh, A.; Bagheri, S.
2022. Journal of fluid mechanics, 933, A18. doi:10.1017/jfm.2021.1041

Simulation of Flow over Pseudo-Random Rough Surfaces
Yang, J.; Stroh, A.; Forooghi, P.
2022. High Performance Computing in Science and Engineering ’20 – Transactions of the High Performance Computing Center, Stuttgart (HLRS) 2020. Ed.: W. Nagel, 387–400, Springer International Publishing. doi:10.1007/978-3-030-80602-6_25

Data-driven correlations for thermohydraulic roughness properties
Dalpke, S. B.; Yang, J.; Forooghi, P.; Frohnapfel, B.; Stroh, A.
2024, September 18. 1st European Fluid Dynamics Conference (EFDC1 2024), Aachen, Germany, September 16–20, 2024

Predicting Roughness Effects on Velocity and Temperature in Turbulent Flow - A Data-Driven Approach
Dalpke, S. B.; Yang, J.; Stroh, A.; Frohnapfel, B.
2024, September 9. 2nd Nationales Hochleistungs Rechnen Conference (NHR 2024), Darmstadt, Germany, September 9–12, 2024

Direct numerical simulation of smooth and rough wall turbulent boundary layers with heat transfer
Secchi, F.; Yang, J.; Gatti, D.; Stroh, A.; Schlatter, P.; Frohnapfel, B.
2024, April. Ercoftac Workshop on Direct and Large Eddy Simulation (DLES14 2024), Erlangen, Germany, April 10–12, 2024

Characterization of anisotropic irregular roughness through direct numerical simulations
Yang, J.; Stroh, A.; Bagheri, S.; Frohnapfel, B.; Forooghi, P.
2024. 13th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2024, Montreal, Kanada, 25 -28 Juni 2024

Assessing different roughness description methods in skin friction prediction
Yang, J.; Stroh, A.; Lee, S.; Bagheri, S.; Frohnapfel, B.; Forooghi, P.
2023, September. 14th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements (ETMM 2023), Barcelona, Spain, September 6–8, 2023

DNS-based thermohydraulic assessment of artificial roughness surrogates
Yang, J.; Velandia, J.; Bansmer, S.; Stroh, A.; Forooghi, P.
2023, August 14. 17th International Heat Transfer Conference (IHTC 2023), Cape Town, South Africa, August 14–18, 2023

An active learning approach for the prediction of hydrodynamic roughness properties
Yang, J.; Stroh, A.; Friederich, P.; Frohnapfel, B.; Forooghi, P.
2022. 12th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2022, Osaka, Japan, 19 - 22 Juli 2022

Study of irregular roughness in minimal channels
Yang, J.; Stroh, A.; Jakirlic, S.; Frohnapfel, B.; Forooghi, P.
2021. ETMM 13, International symposium on engineering, turbulence, modelling and measurement, 15.09.-17.09.2021

Comparison of Different Solvers and Geometry Representation Strategies for Dns of Rough Wall Channel Flow
Theobald, F.; Schäfer, K.; Yang, J.; Frohnapfel, B.; Stripf, M.; Forooghi, P.; Stroh, A.
2021. 14th WCCM & ECCOMAS Congress 2020 : virtual congress, 11-15 January, 2021 / IACM, ECCOMAS. Ed.: F. Chinesta, International Centre for Numerical Methods in Engineering (CIMNE). doi:10.23967/wccm-eccomas.2020.089