Section 5 1D Network Domains - ESTRY

This chapter of the Manual discusses features specifically related to the construction of 1D domains or networks. 2D domain features are discussed separately in Chapter 7 and 1D/2D linking is discussed in Chapter 10. Customising output from 1D domains is discussed in Section 11 and viewing 1D output is discussed in Chapter 15.

5 1D Network Domains - ESTRY

5.1 Schematisation

5.2 Solution Scheme

5.3 1d_nwk Attributes

5.4 Channels Overview

5.5 Open Channels

5.5.1 Inertial Channels

5.5.2 Non-Inertial Channels

5.6 Cross-Sections

5.6.1 Type “XZ” Optional Flags

5.6.1.1 Relative Resistance

5.6.1.1.1 Relative Resistance Factor (R)

5.6.1.1.2 Material Values (M)

5.6.1.1.3 Manning’s n Values (N)

5.6.1.1.4 Position Flag (P)

5.6.2 Type “HW” Optional Flags

5.6.2.1 Flow Area (A)

5.6.2.2 Wetted Perimeter (P)

5.6.2.3 Manning’s n Values (N)

5.6.2.4 Manning’s n Values (F)

5.6.3 Parallel Channel Analysis

5.6.4 Effective Area versus Total Area

5.6.5 Mid Cross-Sections

5.6.6 End Cross-Sections

5.6.7 Interpolated Cross-Section Protocols

5.7.1 Culverts and Pipes

5.7.1.1 Blockage Matrix

5.7.1.1.1 Reduced Area Method

5.7.1.1.2 Energy Loss Method

5.7.1.1.3 Blockage Matrix Commands

5.7.1.1.4 Implementation

5.7.1.2 Limitations

5.7.2.1 Bridges Overview

5.7.2.2 Bridge Cross-Section and Loss Tables

5.7.2.3 B Bridge Losses Approach

5.7.2.4 BB Bridge Losses Approach

5.7.3 Arch Bridge

5.7.3.1 Arch Bridge Editor

5.7.3.2 Arch Minimum Blockage

5.7.4.1 Weirs Overview

5.7.4.2 Original Weirs (W)

5.7.4.3 Advanced Weirs (WB, WC, WD, WO, WR, WT, WV, WW)

5.7.4.3.1 Ogee Crest Weir (WO)

5.7.4.3.2 V-Notch Weir (WV)

5.7.4.4 Advanced Weir Submergence Curves

5.7.4.5 Automatically Created Weirs

5.7.4.6 VW Channels (Variable Geometry Weir)

5.7.5 Spillways (SP)

5.7.6 Sluice Gates (SG)

5.7.7 Adjustment of Contraction and Expansion Losses

5.8 Special Channels

5.8.1 M Channels (User Defined Flow Matrix)

5.8.2 Q Channels (Upstream Depth-Discharge Relationship)

5.8.3 X Connectors

5.8.4 Legacy Channels

5.8.5 1d_nwk Attributes (M, P, Q, SG, SP Channels)

5.9 Operational Channels

5.9.1 .toc File Commands and Logic

5.9.1.1 Define Control Command

5.9.1.2 User Defined Variables

5.9.1.3 Logic Rules

5.9.1.4 Incremental Operators

5.9.2 Pumps (P and PO)

5.9.3 QO Channels

5.9.4 Gated Drowned Rectangular Culverts (RO)

5.9.5 Sluice Gates (SG and SGO)

5.9.6 Spillways with Gates (SPO)

5.9.7 Weirs (WBO, WCO, WDO, WOO, WRO, WTO)

5.9.8 Piping and Dam Failure

5.9.8.1 Piping Failure (PF)

5.9.8.2 Dam Failure (DF)

5.10 Pipe Networks

5.10.2.1 1d_nwk Pits

5.10.2.2 1d_pit Pits

5.10.2.3 Connecting Pits and Nodes to 2D Domains

5.10.3 Pit Inlet and Depth/Stage vs Discharge Databases

5.10.3.1 Road Crossfall Options

5.10.4 Manholes

5.10.4.1 Automatically Assigned Manholes

5.10.4.2 Manually Assigned Manholes (1d_mh Layer)

5.10.4.3 Digitising Culverts Connected to Manholes

5.10.4.4 Engelund Manhole Loss Approach

5.10.4.5 Fixed Manhole Loss Approach

5.10.4.6 Discussion on Approaches to Modelling Pipe Junction Losses

5.11 Virtual Pipes

5.12.1 Automatically Defined Nodes

5.12.1.1 Storage Calculated Automatically from Channel Widths

5.12.1.2 Additional Storage Added from Len_or_ANA Attribute

5.12.2 Manually Defined Nodes

5.12.2.1 Storage Nodes (User Defined NA Tables)

5.12.2.2 Using Nodes to Define Channel Inverts

5.12.2.3 Automatically Connecting Nodes to 2D domains

5.12.3 Storage Above Top of Channels