An integrated mathematical model for analysis of hydrodynamics and water quality in rivers

Abstract (2010): An integrated 1-D mathematical model that simulates hydrodynamics and water quality in rivers and streams is briefly presented and applied. The model consists of a hydrodynamic sub-model (RISH-1D) and a water quality sub-model (RISQ-1D). RISH-1D is based on the Saint–Venant equations, which are discretized using the implicit weighted four-point Priessmann scheme and solved by the iterative method of Newton – Raphson. RISQ-1D consists of mass balance equations for the water quality variables of interest that are discretized using the second order accurate implicit Crank-Nicolson method and solved via the Thomas algorithm. The model is applied in Pinios River, in Greece, to investigate the effect of transient flow conditions on the concentrations of pollutants.     «

Abstract (2010): An integrated 1-D mathematical model that simulates hydrodynamics and water quality in rivers and streams is briefly presented and applied. The model consists of a hydrodynamic sub-model (RISH-1D) and a water quality sub-model (RISQ-1D). RISH-1D is based on the Saint–Venant equations, which are discretized using the implicit weighted four-point Priessmann scheme and solved by the iterative method of Newton – Raphson. RISQ-1D consists of mass balance equations for the water quali...     »

Foreword (2022) Over the last two decades environmental hydraulics as an academic discipline has expanded considerably, caused by growing concerns over water environmental issues associated with pollution and water balance problems on regional and global scale. These issues require a thorough understanding of processes related to environmental flows and transport phenomena, and the development of new approaches for practical solutions. Environmental Hydraulics includes about 200 contributions from 35 countries presented at the 6th International Symposium on Environmental Hydraulics (Athens, Greece, 23-25 June 2010). They cover the state-of-the-art on a broad range of topics, including: fundamentals aspects of environmental fluid mechanics, environmental hydraulics problems of inland, coastal and ground waters, interfacial processes; computational, experimental and field measurement techniques, ecological aspects, and effects of global climate change. Environmental Hydraulics will be of interest to researchers, civil/environmental engineers, and professional engineers dealing with the design and operation of environmental hydraulic works such as wastewater treatment and disposal, river and marine constructions, and to academics and graduate students in related fields.     «

Foreword (2022) Over the last two decades environmental hydraulics as an academic discipline has expanded considerably, caused by growing concerns over water environmental issues associated with pollution and water balance problems on regional and global scale. These issues require a thorough understanding of processes related to environmental flows and transport phenomena, and the development of new approaches for practical solutions. Environmental Hydraulics includes about 200 contributions fr...     »