Gas analyzes steady, one-dimensional, isothermal flow for ideal and non-ideal, variable-density gases.
The module includes the ability to account for ideal natural gas distribution and landfill gas collection. It is also useful for determining the effects of demand or load changes.
Gas can accommodate large networks, looped systems, and multiple supply and load points. Several scenarios may be set up in a single model, such as load changes and open/closed valves. Click here for our model comparisons and limitations page.
Equations
Darcy Weisbach equations and the Ideal Gas law are used to describe pressure-temperature density relationships. Non-Ideal Gas and Constant Density Gas analyses are also available. Mass-flow calculation is used to determine velocity.
Click Here for a List of Supported Devices
| Output | Examples of Supported Elements |
|---|---|
| Steady State Pressure (One-Dimensional, Isothermal) | Compressors/Fans |
| Steady State Flow | Regulators |
| Pressure Drop | Loss Elements |
| Mean Flow Velocity | Fixed Pressure Supply |
| Area of Constriction for Pipes | Variable Pressure Supply |
| Maximum Mach Number (Choking Flows) | Valves |
| Min and Max Pressure, Loss, and Velocity Tables | Check Valves |
| Friction Factor | Meters |
| Area Ratio Density | Metered Connection |
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Examples of Available Features |
|
|---|---|
| Map Label, Notes, Legend and Logo | |
| Copy/Paste/Drag and Drop Pipes | |
| Import/Export Excel, AutoCAD, and GIS Systems | |
| Many Types of Meters | |
| Optimized Calibration | |
| Pipe Emphasis | |
| Pipe Profiling – Animated | |
| Graphs, Tables, Reports | |
| Report Customizing | |
| Background Maps Contouring | |
| Print Features for Reports, Graphs, Tables Demand/Change Patterns | |
