Free Surface Flows and Transport Processes

This book contains the written, thoroughly reviewed versions of both invited lectures and regular presentations given at the 36th International School of Hydraulics, held at Jachranka in Poland on May 23-26, 2017. The contributions cover recent findings in the areas of mathematical modeling as well as experimental investigations related to free surface flows and pollution, sediment and heat transport processes in rivers. Better understanding of environmental flows requires cognition of physical, chemical and biological attributes of flowing water and therefore hydraulic research becomes strongly interdisciplinary field of science. The authors also realize that fundamental knowledge of environmental hydraulics problems is absolutely essential for planning and design of systems to manage water resources. Nowadays the readers face a rapid development of hydraulic research due to a boom in the computer sciences and measurement techniques and this is what this book is about. Eminent world leading experts in this field and young researchers from sixteen countries from all over the world contributed to this book.

Inhalt
A study of large-scale horizontal turbulence in alluvial streams, with a view towards itsmorphological consequences.- Ice concerns for hydraulic engineering in cold, mountainous terrain.- Where small is beautiful mathematical modelling and free surface flows.- Application of the AISA hyperspectral image for verification of sediment transport results obtained from CCHE2D hydrodynamic model - Zegrze Reservoir case study, Poland.- Natural and anthropogenic changes of the Vistula outlet to the sea.- Numerical analysis of steady gradually varied flow in open channel networks with hydraulic structures.- Lattice Boltzmann method for the numerical simulations of the melting and floating of ice.- Simulation of flow characteristics through emerged rigid vegetation over a perturbed bed.- Numerical study of sedimentation in uniformly vegetated wetlands.- An acoustic technique to measure the velocity of shallow turbulent flows remotely.- A CFD based comparison of mixing due to regular and random cylinder arrays.- Turbulence flow modeling of one-sharp-groyne field.- Sensitivity analysis for the water-air heat exchange term.- Time variation of scour at downstream pier for two piers in tandem arrangement.- Geometry description of local scouring process in various laboratory water structure models.- An experimental investigation of pressure wave celerity during the transient slurry flow.- Numerical modeling of water flow conditions with spatial distribution of boulders in main channel.- Analysis of pressure wave velocity in a steel pipeline with inserted fiber optic cable.- Equilibrium time of scour near water engineering structures on river floodplains.- LDV measurements of the flow induced by an elongated bridge pier: the fixed bed case.- An experimental investigation on porosity in gravel beds.- Po River morphodynamics modelled with the open-source code iRIC.- Characteristics of flow around aquatic plants in natural conditions: experimental setup, challenges and difficulties.- Spectral behavior of sand bed rivers at small wavelengths.- Spatial distribution of dissolved oxygen at rapid hydraulic structures as an indicator of local-scale processes.- Characterizing retention processes in streams using retention metrics.- Higher order statistics of Reynolds shear stress in nonuniform sand bed channel.- Analysis of Yellow River Delta evolution with flux variations of runoff and sediment.- Mathematical modelling of sand-gravel bed evolution in one dimension.- Numerical modeling of flow dynamics on a gravel bar during high discharge in a mountain river.- The impact of deflectors on sediment transport processes on the basis of modelling and simulations.- Numerical modeling of water and ice dynamics for analysis of flow around the Kiezmark bridge piers.- Flow dependence of the parameters of the transient storage model.- Mathematical modelling of the impact range of sewage discharge on the Vistula water quality in the region of Wocawek