Vowinckel, BernhardNikora, VladimirKempe, TobiasFröhlich, Jochen2017-01-192017-01-192017-03-01Vowinckel, B, Nikora, V, Kempe, T & Fröhlich, J 2017, 'Spatially-averaged momentum fluxes and stresses in flows over mobile granular beds : a DNS-based study', Journal of Hydraulic Research, vol. 55, no. 2, pp. 208-223. https://doi.org/10.1080/00221686.2016.12606580022-1686http://hdl.handle.net/2164/8032Acknowledgements The authors gratefully acknowledge the Centre for Information Services and High Performance Computing (ZIH), Dresden, and the Jülich Supercomputing Centre (JSC) for providing computing time. The authors thank Markus Uhlmann and Clemens Chan-Braun for stimulating discussions on bed-load transport. Funding The present work was funded by the German Research Foundation (DFG) via the project [FR 1593/5-2] and was partly supported by the Engineering and Physical Sciences Research Council (EPSRC) UK, Grant [EP/G056404/1].163846933engbedformsdirect numerical simulationsdouble-averaging methodologyparticle-laden flowssecondary currentsturbulence-sediments interactionsTA Engineering (General). Civil engineering (General)Engineering and Physical Sciences Research Council (EPSRC)EP/G056404/1TAJournal article10.1080/00221686.2016.1260658552