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Scott is an Engineering Software Developer at AFT, researching, improving, and creating models for fluid analysis within AFT products. Scott is a certified Engineer in Training and holds a Bachelor of Science in Mechanical and Electrical Engineering (2011) from Colorado School of Mines.

Scott Lang

A Story About Fluid Communication

Jack, Ryan, and Sally are piloting a small research vessel on a remote river. While distracted by news of the Mars 2020 Perseverance rover (successful landing!), their vessel crashes and begins capsizing. After their initial panic, they are dismayed to find the collision has taken out their communications equipment.

In some quick thinking, Jack finds a printed log of ships expected to be nearby. Fortunately, there is a marine zoology expedition about a mile downriver, and our crew just needs to get an SOS out to that ship.

Initially, Jack tries simply yelling for help. Unfortunately, this doesn't do much good - and the explanation why requires some fluid mechanics.

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Scott Lang

Making Sense of xT – Valve Loss in Compressible Flow

Almost every piping system has valves, and an accurate solution requires accurate valve losses. For incompressible systems, this is relatively straightforward. What happens when we introduce the complexities of compressible flow?  

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Scott Lang

And, Not, Or - Starting Transient Events with Complex Logic

AFT Fathom XTS and AFT Impulse have long been able to start events like pump trips or valve closures when a certain condition is met in the system. For example, a valve can close when a tank is full, or a pump can trip when the flow is too low. However, complex systems often have multiple conditions that can cause an event. The pump may trip when the flow is too low OR the suction pressure is too low. The valve may only close when ​two​ tanks are full. AFT Fathom version 10 and AFT Impulse version 7 enhance the transient capabilities to allow the definition of these complex ​Multi-Condition Events​.

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Scott Lang

Powerful Tools for Power Generation

Establishing and maintaining an electrical grid is a monumental task spanning many professions and disciplines. Fluid dynamics plays an important role in nearly any method of power generation. Between ensuring safety, reliable production of power, and minimizing operational costs, there are countless ways that modeling fluid flow can offer improvements.

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Scott Lang

Not a Leak! Modeling Multi-stage Pumps with Discharge Flow Between Stages

 ​AFT Fathom has long included the ability to model multi-stage pumps by representing them with an overall effective pump curve. New in AFT Fathom 10 is the ability to model "Interstage Bleed" or "Takeoff Flow" in these multi-stage pumps.

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Recent Comments
Guest — Michael Shahrokhani
Dear Scott, If we have not the AFT Fathom 10 version, we can construct the overall pump curve (with take off), by using interstage... Read More
Monday, 01 October 2018 09:47
Scott Lang
Hello Michael, Thank you for your question! This feature in AFT Fathom 10 is primarily a convenient way to calculate the pump cu... Read More
Monday, 15 October 2018 22:48
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Scott Lang

Paint a Clear Picture Faster Than Ever with AFT's New Excel Export Manager

​AFT Applications have the potential to generate overwhelming amounts of output information. The extensive output customization and graphing capabilities within our products are excellent when building a model and quickly reviewing its behavior. However, it can be difficult to get exactly the data you want in an easy to manipulate form for additional calculations or polished client reports.

To help address this, AFT Fathom 10 is introducing the powerful new ability to export user-selected data directly to Microsoft Excel. Get only the data you need, exactly where it is needed.

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Scott Lang

Planning for Success by Predicting Failure – Maximizing Reliability During Pump Selection

What comes to mind when you hear the expression “planning for failure”? For some, it carries the negative connotation that failure is the direct result of a design – intentionally or otherwise. Benjamin Franklin said; “If you fail to plan, you are planning to fail!” and I believe he would agree that any good plan addresses potential failures. In fact, not "planning for failure" as an element of a system is essentially failing to plan and therefore inviting unexpected and unmitigated failures. Life Cycle Cost One of the many reasons to avoid failure when possible is to reduce cost. When a...
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