SuperNEC

MOM-UTD Hybrid User Reference Manual

Version 2.7

Document Status: Release

A1.Table of Contents

1 Introduction. 1

1.1 A Brief History of SNEC.. 1

1.2 Current Developments. 2

1.3 Differences between SNEC and NEC-2. 2

1.4 The SNEC Configuration File. 4

2 Tutorial - Simulating a monopole over ground. 5

2.1 Writing the SNEC input file. 5

2.2 Running SNEC.. 6

2.3 Viewing the results. 6

3 Structure Modelling Guidelines. 7

3.1 Wire Modelling. 7

3.2 Modelling structures over ground. 8

4 Program Input 10

4.1 Comment Commands. 10

4.2 Structure Geometry Input 10

4.2.1 Wire Arc Specification (GA) 12

4.2.2 End Geometry Input (GE) 14

4.2.3 Read a Numerical Greens Function File (GF) - Not Implemented. 15

4.2.4 Helix Specification (GH) 16

4.2.5 Coordinate Transformation (GM) 17

4.2.6 Generate Cylindrical Structure (GR) 19

4.2.7 Scale Structure Dimensions (GS) 21

4.2.8 Wire Specification (GW) 22

4.2.9 Reflection in Coordinate Planes (GX) 24

4.2.10 Cylinder Specification (CY) 26

4.2.11 Plate Specification (PL) 27

4.2.12 Moving Plates (MP) 29

4.2.13 Moving Cylinders (MC) 30

4.2.14 Move All (MA) 31

4.3 Execution Control Commands. 32

4.3.1 Correct Source Voltage (CS) 34

4.3.2 Maximum Coupling Calculation (CP) 35

4.3.3 Setting the Propagator (EK) 36

4.3.4 End of Run (EN) 37

4.3.5 Excitation (EX) 38

4.3.6 Frequency (FR) 43

4.3.7 Ground Parameters (GN) 44

4.3.8 Additional Ground Parameters (GD) 46

4.3.9 Setting the Interaction Range (KH) 48

4.3.10 Loading (LD) 49

4.3.11 Near Fields (NE, NH) 52

4.3.12 Two-port Networks (NT) 54

4.3.13 Next Structure (NX) 56

4.3.14 Charge Calculation Request (PQ)