Ryota TSUBAKI
Welcome to my homepage. (紹介ページ（研究室），紹介ページ（大学）)
My research interest is to analyzing water circulation in rivers using novel measurement methods and numerical flow simulation.
Some selected papers are listed below.
Image motion analysis of sediment particles migrating on dunes
Tsubaki, R., Baranya, S., Muste, M. and Toda, Y.: Spatio-temporal patterns of sediment particle movement on 2D and 3D bedforms, Experiments in Fluids, Vol. 59, No. 93, 2018. Post-print, View-only-version.
Experiment to clarify the condition of railway embankment scour
Tsubaki, R., Kawahara, Y. and Ueda, K.: Railway embankment failure due to ballast layer breach caused by inundation flows, Natural Hazards, Vol. 87, No. 2, doi: 10.1007/s11069-017-2789-3, 2017, Post-print, Journal link.
Fragility curve for railway embankment scour
Tsubaki, R., Bricker, J.D., Ichii, K. and Kawahara, Y.: Development of fragility curves for railway embankment and ballast scour due to overtopping flow, Natural Hazards and Earth System Sciences, EGU, Vol. 16, 2455-2472, doi:10.5194/nhess-16-2455-2016, Paper.
Sediment budgeting using detailed bathymetry maps: Acoustic mapping velocimetry (AMV)
Muste, M., Baranya, S., Tsubaki, R., Kim, D., Ho, H., Tsai, H. and Law, D.: Acoustic mapping velocimetry, Water Resources Research, Vol. 52, doi: 10.1002/2015WR018354, 2016.5, Journal link, Paper.
Spatial interpolation of river ADCP data
Tsubaki, R., Kawahara, Y., Muto, Y. and Fujita, I.: New 3-D flow interpolation method on moving ADCP data, Water Resources Research, Abstract, Paper, Repository
Development of image based flow measurement method and utilization to open water flow analysis
Multi-camera large-scale particle image velocimetry
Tsubaki, R.: Multi-camera large-scale particle image velocimetry. Measurement Science and Technology, doi: 10.1088/1361-6501/ab85d5, 2020, Post-print, Journal link.
On the Texture Angle Detection Used in Space-Time Image Velocimetry
Tsubaki, R.: On the Texture Angle Detection Used in Space-Time Image Velocimetry (STIV), Water Resources Research, Vol. 53(12), doi: 10.1002/2017WR021913, pp.10908-10914, 2017, Post-print, Journal link.
Smartphone apps for river flow measurement (LSPIV apps for iOS and Android)
Tsubaki, R., Fujita, I., Yu, K. and Muste, M.: Large-scale particle image velocimetry (LSPIV) implementation on smartphone, Proceedings of 36th IAHR congress, ISBN: 978-90-824846-0-1, Paper number 3874 on WEB site, Hague, Netherlands, June 28, 2015. Link
Innovation on river monitoring and its application on eco-hydraulics assessment
Development and refinement of methods for measuring water and sediment flow during floods, and assessment of those impact of river ecosystem (riparian and aquatic plants and attached algae)
Compact geophone
Tsubaki, R., Kawahara, Y., Zhang, X and Tsuboshita, K.: A new geophone device for understanding environmental impacts caused by gravel bedload during artificial floods, Water Resources Research, Vol. 53, doi: 10.1002/2016WR019726, 2017, Journal link, Paper, Post-print.
Flood inundation flow modeling
Railway embankment overtopping
Uncertainty assessment of the calculated result
Tsubaki, R. and Kawahara, Y.: The uncertainty of Local Flow Parameters During Inundation Flow Over Complex Topographies with Elevation Errors, Journal of Hydrology, Vol.486, 2013. Journal link, Repository
Mesh generation using LiDAR data
Tsubaki, R., Fujita, I.: Unstructured grid generation using LiDAR data for urban flood inundation modelling, Hydrological Processes, Vol. 24, No. 11, pp. 1404-1420, 2010, Abstract, Paper, Repository
Investigation of flow in a channel in Japanese garden
Tsubaki, R., Nakayama, Y. and Fujita, I.: The design secret of Kyokusui-no-En's meandering channel, Journal of Visualization, Vol. 11, No. 3, pp. 265-272, 2008.7. Abstract, Repository
River flow
Morphological evolution of river topography
Flow with vegetation
Numerical flow simulation (CFD)
LES (Large eddy simulation) coupled with VOF (Volume of fluid) water surface deformation