By Dr Matthias Kramer

Journal articles

Kramer M; Bung DB, 2025, 'Improving the Measurement of Air-Water Flow Properties Using Remote Distance Sensing Technology', Journal of Hydraulic Engineering, 151, http://dx.doi.org/10.1061/JHEND8.HYENG-14074

Felder S; Kramer M; Hohermuth B; Valero D, 2024, 'Can Developments in Air-Water Flow Instrumentation Advance Hydraulic Design?', Journal of Hydraulic Engineering, 150, pp. 02524003, http://dx.doi.org/10.1061/JHEND8.HYENG-14037

Valero D; Felder S; Kramer M; Wang H; Carrillo JM; Pfister M; Bung DB, 2024, 'Air–water flows', Journal of Hydraulic Research, 62, pp. 319 - 339, http://dx.doi.org/10.1080/00221686.2024.2379482

Kramer M, 2024, 'Turbulent free-surface in self-aerated flows: Superposition of entrapped and entrained air', Journal of Fluid Mechanics

Cui H; Felder S; Kramer M, 2023, 'Predicting flow resistance in open-channel flows with submerged vegetation', Environmental Fluid Mechanics, 23, pp. 757 - 778, http://dx.doi.org/10.1007/s10652-023-09929-x

Kramer M; Valero D, 2023, 'Linking turbulent waves and bubble diffusion in self-aerated open-channel flows: two-state air concentration', Journal of Fluid Mechanics, 966, pp. a37, http://dx.doi.org/10.1017/jfm.2023.440

Felder S; Severi A; Kramer M, 2023, 'Self-Aeration and Flow Resistance in High-Velocity Flows Down Spillways with Microrough Inverts', Journal of Hydraulic Engineering, 149, pp. 04023011, http://dx.doi.org/10.1061/JHEND8.HYENG-13230

Kramer M, 2023, 'Velocities and turbulent stresses of free-surface skimming flows over triangular cavities', Journal of Hydraulic Engineering, 149, pp. 04023012, http://dx.doi.org/10.1061/JHEND8.HYENG-13209

Taghavi N; Niven RK; Kramer M; Paull DJ, 2023, 'Comparison of DRASTIC and DRASTICL groundwater vulnerability assessments of the Burdekin Basin, Queensland, Australia', Science of the Total Environment, 858, pp. 159945, http://dx.doi.org/10.1016/j.scitotenv.2022.159945

Valero D; Belay BS; Moreno-Rodenas A; Kramer M; Franca MJ, 2022, 'The key role of surface tension in the transport and quantification of plastic pollution in rivers', Water Research, 226, pp. 119078, http://dx.doi.org/10.1016/j.watres.2022.119078

Cui H; Felder S; Kramer M, 2022, 'Multilayer Velocity Model Predicting Flow Resistance of Aerated Flows Down Grass-Lined Spillway', Journal of Hydraulic Engineering, 148, pp. 06022014, http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0002003

Taghavi N; Niven RK; Paull DJ; Kramer M, 2022, 'Groundwater vulnerability assessment: A review including new statistical and hybrid methods', Science of the Total Environment, 822, pp. 153486, http://dx.doi.org/10.1016/j.scitotenv.2022.153486

Waldschläger K; Brückner MZM; Carney Almroth B; Hackney CR; Adyel TM; Alimi OS; Belontz SL; Cowger W; Doyle D; Gray A; Kane I; Kooi M; Kramer M; Lechthaler S; Michie L; Nordam T; Pohl F; Russell C; Thit A; Umar W; Valero D; Varrani A; Warrier AK; Woodall LC; Wu N, 2022, 'Learning from natural sediments to tackle microplastics challenges: A multidisciplinary perspective', Earth-Science Reviews, 228, pp. 104021, http://dx.doi.org/10.1016/j.earscirev.2022.104021

Hohermuth B; Kramer M; Felder S; Valero D, 2021, 'Velocity bias in intrusive gas-liquid flow measurements', Nature Communications, 12, pp. 4123, http://dx.doi.org/10.1038/s41467-021-24231-4

Kramer M; Felder S; Hohermuth B; Valero D, 2021, 'Drag Reduction in Aerated Chute Flow: Role of Bottom Air Concentration', Journal of Hydraulic Engineering, 147, pp. 04021041, http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0001925

Kramer M; Felder S, 2021, 'Remote sensing of aerated flows at large dams: Proof of concept', Remote Sensing, 13, pp. 2836, http://dx.doi.org/10.3390/rs13142836

Felder S; Montano L; Cui H; Peirson W; Kramer M; Montano Luna L, 2021, 'Effect of inflow conditions on the free-surface properties of hydraulic jumps', Journal of Hydraulic Research, 59, pp. 1004 - 1017, http://dx.doi.org/10.1080/00221686.2020.1866692

Kramer M; Hohermuth B; Valero D; Felder S, 2021, 'On velocity estimations in highly aerated flows with dual-tip phase-detection probes - closure', International Journal of Multiphase Flow, 134, pp. 103475, http://dx.doi.org/10.1016/j.ijmultiphaseflow.2020.103475

Kramer M; Valero D, 2020, 'Turbulence and self-similarity in highly aerated shear flows: The stable hydraulic jump', International Journal of Multiphase Flow, 129, pp. 103316, http://dx.doi.org/10.1016/j.ijmultiphaseflow.2020.103316

Kramer M; Hohermuth B; Valero D; Felder S, 2020, 'Best practices for velocity estimations in highly aerated flows with dual-tip phase-detection probes', International Journal of Multiphase Flow, 126, pp. 103228, http://dx.doi.org/10.1016/j.ijmultiphaseflow.2020.103228

Kramer M; Chanson H; Felder S, 2019, 'Can we improve the non-intrusive characterization of high-velocity air–water flows? Application of LIDAR technology to stepped spillways', Journal of Hydraulic Research, 58, pp. 350 - 362, http://dx.doi.org/10.1080/00221686.2019.1581670

Kramer M; Valero D; Chanson H; Bung DB, 2019, 'Towards reliable turbulence estimations with phase-detection probes: an adaptive window cross-correlation technique', Experiments in Fluids, 60, pp. 2, http://dx.doi.org/10.1007/s00348-018-2650-9

Kramer M; Chanson H, 2018, 'Optical flow estimations in aerated spillway flows: Filtering and discussion on sampling parameters', Experimental Thermal and Fluid Science, 103, pp. 318 - 328, http://dx.doi.org/10.1016/j.expthermflusci.2018.12.002

Kramer M; Chanson H, 2018, 'Transition flow regime on stepped spillways: air–water flow characteristics and step-cavity fluctuations', Environmental Fluid Mechanics, 18, pp. 947 - 965, http://dx.doi.org/10.1007/s10652-018-9575-y

Kramer M; Terheiden K; Wieprecht S, 2018, 'Pumps as turbines for efficient energy recovery in water supply networks', Renewable Energy, 122, pp. 17 - 25, http://dx.doi.org/10.1016/j.renene.2018.01.053

Kramer M; Wieprecht S; Terheiden K, 2017, 'Minimising the air demand of micro-hydro impulse turbines in counter pressure operation', Energy, 133, pp. 1027 - 1034, http://dx.doi.org/10.1016/j.energy.2017.05.043

Kramer M; Wieprecht S; Terheiden K, 2016, 'Penetration depth of plunging liquid jets - A data driven modelling approach', Experimental Thermal and Fluid Science, 76, pp. 109 - 117, http://dx.doi.org/10.1016/j.expthermflusci.2016.03.007

Kramer M; Terheiden K; Wieprecht S, 2016, 'Safety criteria for the trafficability of inundated roads in urban floodings', International Journal of Disaster Risk Reduction, 17, pp. 77 - 84, http://dx.doi.org/10.1016/j.ijdrr.2016.04.003

Kramer M; Terheiden K; Wieprecht S, 2015, 'Optimized design of impulse turbines in the micro-hydro sector concerning air detrainment processes', Energy, 93, pp. 2604 - 2613, http://dx.doi.org/10.1016/j.energy.2015.10.022

Kramer M; Wieprecht S, 2013, 'Implementation studies of small energy converters in water supply systems', DVGW Energie Wasser-Praxis

KRAMER M; ZUNFT J; STEEGBORN J; ZERWAS PM, 1995, 'INELASTIC J/PSI PHOTOPRODUCTION', PHYSICS LETTERS B, 348, pp. 657 - 664, http://dx.doi.org/10.1016/0370-2693(95)00155-E

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