NDLI: Definition of mixing zones in rivers

Content Provider	Springer Nature Link
Author	Rodríguez Benítez, Alonso J. García Gómez, Andrés Álvarez Díaz, César
Copyright Year	2015
Abstract	The adequate definition of the mixing zone generated by the discharge of an effluent is of great importance, as it serves as support for the environmental authorities on the decision-making about the authorization of the discharge. The evolution of the mixing zone of an effluent is affected by different kind of phenomena as temporal variations on the hydrodynamic conditions, spatial variations in the geomorphology and bathymetry of the receiving water, etc. The correct definition of the mixing zone should take into account these factors, for which the use of mathematical modelling is needed. The turbulent hydrodynamic processes in the near field of the discharge and in the far field occur at different spatial and temporal scales. The mathematical model needs to be able of simulating the hydrodynamic and transport processes on both fields. The present paper proposes a methodology to be followed when the prediction of the extents of the mixing zone generated by an effluent discharged into a river is needed. The methodology consists of the obtaining of the necessary hydrodynamic and pollutant concentration data on the effluent and on the receiving water; the building of the adequate calculation meshes for the modelling; the calibration and validation of the model; and finally the definition of the critical conditions for the prediction of the behaviour of the mixing zone. An example of application of the proposed methodology is shown for a real case, the discharge of the WWTP of Casar de Periedo town in the Saja River, Cantabria, Spain, for which field data have been measured. The prediction of the extents of the mixing zone for this case was made using a hydrodynamic two-dimensional depth-averaged long wave model jointly with a transport model. In order to simulate the near field and the far field jointly, an Embedded mesh system was built. For the Embedded mesh system, it was needed the establishment of conditions for the information exchange between the meshes.
Starting Page	209
Ending Page	244
Page Count	36
File Format	PDF
ISSN	15677419
Journal	Environmental Fluid Mechanics
Volume Number	16
Issue Number	1
e-ISSN	15731510
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-07-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mixing zone Rivers Transport modelling Near field Embedded mesh Earth Sciences Environmental Physics Hydrology/Water Resources Mechanics Hydrogeology Oceanography
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Bedload transport for heterogeneous sediments

Integrated modelling of single port, steady-state thermal discharges in unstratified coastal waters

Initial mixing of inclined dense jet in perpendicular crossflow

On the modelling of steady turbulent fountains

LE of shallow mixing interfaces: A review

Mixing layer in open-channel junction flows

Horizontal transport, mixing and retention in a large, shallow estuary: Río de la Plata

Spatial–temporal structure of mixing interface turbulence at two large river confluences

Moisture effects on eolian particle entrainment

Definition of mixing zones in rivers

Similar Documents

Bedload transport for heterogeneous sediments

Integrated modelling of single port, steady-state thermal discharges in unstratified coastal waters

Initial mixing of inclined dense jet in perpendicular crossflow

On the modelling of steady turbulent fountains

LE of shallow mixing interfaces: A review

Mixing layer in open-channel junction flows

Horizontal transport, mixing and retention in a large, shallow estuary: Río de la Plata

Spatial–temporal structure of mixing interface turbulence at two large river confluences

Moisture effects on eolian particle entrainment

Definition of mixing zones in rivers