Walk-Through Examples

The AFT Arrow Examples Help System is designed to expose users to a range of applications and improve their understanding of the AFT Arrow software. If you are new to AFT Arrow, start with the Air Heating System Example, because it has the most in-depth discussion on how to create and run AFT Arrow models. After this example, choose an example from the table below that most closely matches your application.

Note: The examples in this Help System are in English units. These examples are also available in equivalent Metric units. To work these examples in Metric units, open the Metric Units example help file, or click the link to the Metric example found at the top of each example.

Example	Complexity	Fluid	Pipes	Fans / Compressors	Description
Beginner: Air Heating System	Beginner	Air	5	1	A new AFT Arrow user should start here. Get in-depth instructions of model building by solving an air heating system problem. Learn how to define a fluid in Analysis Setup, place pipes and junctions on the Workspace, define pipes and junctions, use the Model Data window, run a model, use the Output window, generate graphs in the Graph Results window, and view results in the Visual Report window.
Flow Through an Orifice	Beginner	Steam	2	0	Learn about the CdA value for sonic choking in the Orifice Properties window. See how the effective flow area affects the flow rates and pressures in the system.
Control Valve	Beginner	Steam	2	0	Learn how to define the Convective Heat Transfer model on the Heat Transfer tab of the Pipe Properties window. See how to use a control valve junction to determine pipe size. Learn how to use the Output Control window to display relevant heat transfer output parameters.
Natural Gas Burner	Beginner	Methane	16	0	Learn how to use the Specified Heat Rate In Constant thermal model in a Heat Exchanger junction to obtain a desired outlet temperature in a system. See how to specify a resistance curve as the loss model in a Heat Exchanger junction.
Compressed Air System	Beginner	Air	9	1	Learn how to input a compressor curve into a Compressor/Fan junction. See how to use the Scenario Manager to create different system configurations. Explore how to use the isometric pipe drawing mode in the Workspace window.
Process Steam System	Intermediate	Steam	17	0	Learn about the Solution Method panel in Analysis Setup to see how the Length March Increment impacts results.
Hydrocarbon Relief System	Intermediate	Methane Hydrogen	4	0	Learn how to create a mixture using the NIST REFPROP fluid library. See how and where multiple choking points occur in the system.
Refinery Relief System	Beginner	Methane Ethane Propane	6	0	Learn how to use the NIST REFPROP fluid library to specify multiple pure fluids in a single system where dynamic mixing occurs. See how to use Global Junction Edit to make rapid changes to junctions.
Air Blower Sizing	Intermediate	Air	13	1	Learn how blower efficiency affects pressure rise and discharge temperature. See how using heat transfer further impacts the pressure and temperature results.
Compressed Air System - Cost	Beginner	Air	9	1	Learn the basics of cost calculations such as specifying material, installation, and energy costs, connecting engineering and cost libraries, and interpreting the Cost Report in the Output window.
Process Steam System - Cost	Intermediate	Steam	17	0	Learn how to create cost libraries for pipe materials and junctions. See how to use Scale Tables to allow costs to scale as pipe diameters change. Learn how to specify Material costs versus Installation costs.