AFT Blog
You've probably modeled pumps using curve data from the manufacturer. In conjunction with specifying a name reflecting the pump make and model and saving pumps to your component database, selecting and using these pump junctions in your system models is fast and easy. Often, however, a make/model pump will have not one set of head/pressure, efficiency and NPSHR curves, but a family of curves for various operating speeds and impeller diameters. You could define a pump junction for each set of curves, but with Multiple Pump Configurations, you can readily save the entire family of curves in one pump junction. For...
Users regularly contact us asking for information to assist them in validating AFT software. The formality of the validation requirement ranges from customer's self imposed internal requirements to rigorous validation as required for work in the nuclear industry. Fortunately, AFT provides extensive reference material for validation and, what's more, you probably already have it since it's automatically installed when you install AFT Arrow, AFT Fathom, AFT Impulse or AFT xStream. Under the main application folder you'll find the Verification folder, containing models developed from published references. The source of the reference problem is displayed in the General section of the Output...
You display the full parameter name in an Excel Add-In by entering the "ParameterDescription" function.
You can show the engineering units for each parameter used in the Excel Add-In. Paste the function "ParameterUnits" and specify the parameter argument, and the units for that parameter will be displayed
The units displayed for the calculated output values can be set by selecting the Options | Unit Preferences menu item. Each property can be selected from the list, and the preferred units applied by selecting the desired unit from the list, and clicking the Set As Preferred Unit button. The units that appear in the list of available units for the input properties can be controlled by checking or unchecking the box next to each unit listed for a property. The selected units can be set as the user's default, so they are used every time the user starts SteamCalc. Multiple...
To calculate the saturated liquid or vapor properties, select the input property as Property #1. Then select either Saturated Liquid or Saturated Vapor as Property#2.
To calculate properties over a range of values, select the Range tab on the main SteamCalc window. This tab allows you to enter a fixed point for the first property, and a range of values for the second property. The calculated values are displayed in the output grid based on an incremental range value that you specify. The values for a range calculation can be plotted graphically by selecting the Options | Create Graph menu item.