SpinOffs

A blog on what's new, notable, and next in turbomachinery

Posts about Aerodynamics

The Wright Stuff for Turbomachinery

The Wright Stuff for Turbomachinery

By Dr. David Schowalter
Dec 14, 2018

As an engineer, you probably have at least some familiarity with the story of how two bicycle mechanics, named Orville and Wilbur Wright, invented controlled-powered flying machines at Kitty Hawk,...

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Reverse Engineering - Going from Part to Art

Reverse Engineering - Going from Part to Art

By Sharon Wight
Dec 7, 2018

Have you ever needed to know the exact geometry of a compressor that has been running for years in your process plant? Perhaps you need to analyze how it would perform if the process fluid had to be...

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20 Great Gifts for Engineers from $10 to $2 Million

20 Great Gifts for Engineers from $10 to $2 Million

By Barbara Shea
Nov 23, 2018

Gifts for Engineers can usually be segmented into a few categories: Things you have to put together, science fiction, gaming, new technology, and witty phrases printed on stuff. A Google search of...

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Material Properties  - What Really Matters?

Material Properties  - What Really Matters?

By Kevin Fairman
Nov 9, 2018

As an engineer in the rotating machinery world, it is my job to design things that work for a very long time. To help ensure this, we have evolved the best analytical tools to calculate the stresses...

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Why are Turbine Blades Twisted?

Why are Turbine Blades Twisted?

By Dan Hinch
Oct 12, 2018

It’s a straightforward question, but many turbomachinery engineers can’t easily explain the physics behind blade twist. Some shorter high-pressure turbine (HPT) blades appear nearly 2D in shape...

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Designing Turbomachinery is like Solving a Rubik's Cube

Designing Turbomachinery is like Solving a Rubik's Cube

By Barbara Shea
Sep 21, 2018

I think we can all agree that designing turbomachinery is hard. There are just so many moving parts (pun intended) in the design process, and they are all interconnected.  When you change the blade...

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Investing in Designing Gas Turbines for Power Generation

Investing in Designing Gas Turbines for Power Generation

By David Teal
Sep 14, 2018

Gas turbines (or GTs) are important in the power generation sector due to their high efficiency, cleaner emissions and faster startup than old coal-powered plants. These power generators can range...

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Using Curvature Smoothing for Quality Reconstruction of Blade Sections Using Surface Data Tables

Using Curvature Smoothing for Quality Reconstruction of Blade Sections Using Surface Data Tables

By Oleg Dubitsky
Aug 31, 2018

Frequently, there is a need to reconstruct 2D and 3D geometry from reported or measured surface data points. In most cases, the provided surface data include significant amounts of noise for various...

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The Challenges & Cures of CFD Solution Failures

The Challenges & Cures of CFD Solution Failures

By Mark R. Anderson
Aug 3, 2018

Computational fluid dynamic analysis (CFD) has become a standard part of the turbomachinery design process. Within Concepts NREC’s Agile Engineering Design System, FINE/Turbo, from our Partner NUMECA...

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Is Laboratory Testing Still Needed for Turbomachinery Development?

Is Laboratory Testing Still Needed for Turbomachinery Development?

By Andrew Provo
May 17, 2018

Historically, testing has played a critical role in the turbomachinery design process and multiple rounds of “design, test, analyze, repeat” were not uncommon.  Today however, the industry seems to...

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Optimizing the Radial-to-Axial Duct Geometry for a Gas Turbine Radial Compressor Impeller

Optimizing the Radial-to-Axial Duct Geometry for a Gas Turbine Radial Compressor Impeller

By Oleg Dubitsky
Apr 13, 2018

Many gas turbines with radial compressors utilize a radial-to-axial inlet duct upstream of the first compressor stage. Aside from the fact that flow in the duct generates aerodynamic losses, the flow...

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Measuring Aerodynamic Blockage

Measuring Aerodynamic Blockage

By Mark R. Anderson
Aug 23, 2017

Aerodynamic blockage is a comparatively simple parameter to measure and reveals important aerodynamic performance data. Aerodynamic blockage is directly related to the displacement thickness concept...

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