ISO/TR TECHNICAL REPORT 11651 Firstedition 2015-08-15 Estimation ofsediment deposition in reservoir using one dimensional simulation models Estimation du depot de sediments dans le reservoir en utilisant des modelesdesimulationaunedimension Reference number IS0/TR11651:2015(E) LSO @IS02015 IS0/TR11651:2015(E) COPYRIGHTPROTECTEDDOCUMENT @IS0 2015,Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax+41227490947 [email protected] www.iso.org @IS02015-All rights reserved Coovriaht In IS0/TR11651:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normativereferences ..1 3 Definitions. .2 4 Units ofmeasurement .2 5 Principles of quasi-unsteady sediment modelling ..2 6 Principles of unsteady flow models 6.1 General 2 6.2 Governing equations. .3 6.3 Numerical techniques for solution of governing equations. 6 6.3.1 Explicitfinite-difference methods 1 6.3.2 Implicit finite-difference methods .7 6.3.3 Finiteelement methods. 1 6.3.4 Finite volume methods 6.4 Sediment transport. ..8 7 Datarequirements .10 7.1 Selection of model boundaries .12 7.2 Cross-section data .12 7.2.1 General 12 7.2.2 Manning's n values. .13 7.2.3 Movable bed and dredging .13 7.3 Stage data. .13 7.4 Velocity data .13 7.5 Discharge data 13 7.6 Lateral inflows and withdrawals 14 7.7 Sediment data. .14 8 Formulation, calibration,testing and validation ofmodels .15 8.1 Formulation of numerical models .15 8.1.1 Hydrology 15 8.1.2 Geometry .16 8.1.3 Selection of transport equation .16 8.1.4 Bed mixing and armoring algorithm .16 8.2 Preliminarytests .16 8.3 Computational grid and time step .17 8.4 Convergencetesting .18 8.5 Boundary and initial conditions .18 8.6 Calibration .18 8.7 Validation. 19 8.8 Predictive simulation. .20 8.9 Sensitivity testing 20 8.10 Specific models. .20 9 Uncertainties .21 9.1 Modelparameters .21 9.2 Dataformodel development,testing and application .21 9.3 Governing equations 22 9.4 Numerical approximations to governing equations .22 AnnexA (normative) Models and case studies ..24 Bibliography .25 adrightsreserved ii