One of the powerful benefits of system modeling is the ability to evaluate the effects of changing system parameters. With the GSC module you can:
Save Time
Save time by avoiding manual iterative analyses
Multiple Goals
Define multiple variables and goals at multiple locations throughout the system
Answer Questions
What pump/compressor/fan speed will achieve a specified total flow to multiple, remote tanks? Valve position for a desired differential supply pressure between equipment?
Productivity
Increase your productivity
Modeling parameters that may be used as variables or goals include:
- Pumps – speed, flow, head rise, impeller diameter
- Compressors and Fans – speed, flow, head rise
- Tanks – pressure, temperature
- Valves – open percent, Cv/K, deltaP, flow
- Reservoirs – liquid level, temperature
- Control valves – setpoint, open percent
- Orifice – diameter, area
- Heat exchangers – heat rate, temperatures, area, U value
- Spray discharge – area, K value, exit pressure
- Pipes – friction, scaling, insulation thickness
Text and graphical output clearly display time-varying parameters such as:
• Pressure in tanks
• Flow and pressure in pipes
• Pump/Compressor operating conditions
• Valve position and more
• Unique animation feature dynamically displays time-varying parameters along selected flow paths
Heat Transfer
Contact AFT for a Free 2-week trial of the GSC Module.
Extends Capabilities
What is the difference between goal seeking and control?
The Goal Seek & Control, Module extends modeling capabilities in two ways.
- Goal seeking, automatically finding the value of one or more inputs that will produce a specify value for one or more outputs.
- Extends control modeling capabilities to remote sensing.
AFT software can model flow and pressure control valves and controlled, variable speed. With the basic software, the variable controlled is the one at the control component. That is, a pressure reducing valve controls the outlet pressure at the valve.
With GSC, control can be based on a variable located anywhere in the system. Instead of controlling the pressure at the valve outlet, it could be a pressure downstream at some other location.
Additionally, control can be based on the difference between two variables, such as a differential pressure between two points, and on group sums, maximums or minimums, simulating some of the more sophisticated control logic that is sometimes implemented in real systems through computer-based control systems.
Number of Variables and Goals
Is there a limit on the number of variables and goals the GSC Module can handle?
While there is no limit, the time required to find a solution will increase with the number of variables and goals that must be solved.
The GSC module employs a robust and efficient numerical optimization engine to be able to handle models with large numbers of variables and goals.
Module License
Do I have to have one GSC module license for each license?
Please note: AFT Fathom GSC and AFT Arrow GSC are seperate products and are unique to their parent product.
For example, you may have several AFT Fathom or Arrow licenses deployed on your network but only need to use GSC half the time and, therefore, have a correspondingly lower number of GSC licenses. If you open a model previously saved using GSC, the software will first try to activate the GSC module. If all of the GSC licenses are being used, a message will be displayed telling you a GSC license is not available and provide you a choice of continuing to open the model or canceling the load.
This same message will remind you that if you do open and work with the model, GSC specifications contained in the model may be lost.
AFT Software Add-On Modules
Settling Slurry (SSL)
Models the effects of pumping fluids containing settling solids using the Wilson/GIW method.
Add-on Module for:
Goal Seek & Control (GSC)
Significantly reduce your iterations. Identify input parameters that yield desired output values and simulate control functions.
Add-on Module for:
Extended Time SImulation (XTS)
Models dynamic system behavior and how critical system parameters vary over time.
Add-on Module for:
Automated Network Sizing (ANS)
Evaluates the complex interaction of system variables to reveal combinations of cost savings.
Add-on Module for:
Pulsation Frequency Analysis (PFA)
Helps identify pipe acoustical frequencies to avoid resonance from excitations.
Add-on Module for:
Let's Get Started!
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