Tuflow and estry manual Version 3

3The Modelling Process

Section Contents

1 Introduction 1

1.1 TUFLOW 4

1.2 ESTRY 4

2 Overview 1

2.1 Software Structure 4

2.2 Data Input 5

2.3 Performing Simulations 15

2.4 Data Output 15

2.5 Limitations and Recommendations 16

3 The Modelling Process 1

3.1 Is a 2D or 2D/1D Model Feasible? 4

3.2 Linking 1D and 2D Domains 5

3.3 Data Requirements 8

3.4 Calibration and Sensitivity 8

3.5 Model Resolution 9

3.6 Computational Timestep 10

3.7 Eddy Viscosity 11

Data Input 1

3.8 Control Files – Rules and Notation 4

3.9 Simulation Control Files 6

3.10 GIS Layers 10

3.11 2D Domains (.tgc File) 12

3.12 1D Domains (Networks) 19

3.13 1D Topography 32

3.14 Hydraulic Structures and Supercritical Flow 42

3.15 Time-Series Output Locations 56

3.16 Initial Water Levels (IWL) and Restart Files 61

3.17 Boundary Conditions and Linking 2D/1D Models 63

3.18 Presenting 1D Domains in 2D Output (1d_wll) 85

3.19 Data Processing Heirachy 88

3.20 UltraEdit 90

4 Running TUFLOW 1

4.1 Installing a Dongle 4

4.2 TUFLOW.exe and TUFLOW_LINK.dll 8

4.3 via Right Mouse Button in Microsoft Explorer 9

4.4 From UltraEdit 10

4.5 Batching Simulations using a Batch File 12

4.6 From a DOS Window 14

4.7 The DOS Window Does Not Appear! 14

5 2D/1D Model Development 1

5.1 Setting up a New Model 4

6 Data Output 1

6.1 General 4

6.2 Check Files 8

6.3 2D Domains 13

6.4 1D Domains 18

7 Quality Control 1

7.1 Check List 4

8 Troubleshooting 1

8.1 General Comments 4

8.2 Suggestions and Recommendations 4

8.3 Identifying the Start of an Instability 5

8.4 Why Do I Get Different Results? 6

9 New Features and Changes 1

9.1 Build 2005-05-AN 1

9.2 Build 2004-06-AC to 2001-03-AA 7

10 References 1