SpinOffs

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

Posts about Centrifugal Compressors

7 Turbomachinery Themed Valentine’s Day Cards – Which is Your Favorite?

7 Turbomachinery Themed Valentine’s Day Cards – Which is Your Favorite?

By Barbara Shea
Feb 8, 2019

Valentine’s Day is February 14, and while some cynics refer to it as a “Hallmark holiday”, most people commemorate the day in some way. One of the biggest challenges is finding a card that perfectly...

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Increases in Temperature Envelopes and Its Implications on Material Selection

Increases in Temperature Envelopes and Its Implications on Material Selection

By Arsalan Adil
Feb 1, 2019

Temperature envelopes in the turbomachinery industry are constantly increasing as the state of the art evolves in pursuit of better performance. This means engineers need to design compressors with...

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Flank Milling - How Hard Can It Be?

Flank Milling - How Hard Can It Be?

By Peter Klein
Jan 4, 2019

 When designing compressors, engineers often use ruled-surface blades with the goal of making a shape that’s easily manufactured on a 5-axis machine.  Theses blades can be quickly machined in one...

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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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Radial Compressor Geometry Primer - Video Blog

Radial Compressor Geometry Primer - Video Blog

By Mark R. Anderson
Nov 30, 2018

Below is a 4 minute video blog from Mark Anderson, Concepts NREC's Chief Technology Officer, on the geometry of radial compressors. In it, he details the various parts of the compressor wheel,...

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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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Splitter Design for Radial Compressors  - Video Blog

Splitter Design for Radial Compressors  - Video Blog

By Mark R. Anderson
Oct 19, 2018

Below is 3 minute video blog from Mark Anderson, Concepts NREC's Chief Technology Officer, on splitter design for radial compressors. Click on the small thumbnail image below to launch the full-size...

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Extending the Operating Range of Centrifugal Compressors

Extending the Operating Range of Centrifugal Compressors

By Adam Weaver
Sep 28, 2018

Extending the operating range of centrifugal compressors has been a highly sought-after goal for several decades. In fact, the potential benefits have motivated researchers to develop and put into...

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Yellow Ropes

Yellow Ropes

By Jim Miller
Aug 17, 2018

In the mid 1980’s, while serving in the Canadian Air Force, I had the good fortune, on one of my many adventures, to fly into Sondrestrom Air Base in Greenland. The Base is at the head of a beautiful...

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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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The Slip Factor Model for Axial, Radial, and Mixed-Flow Impellers

The Slip Factor Model for Axial, Radial, and Mixed-Flow Impellers

By Mark Anderson and Chanaka Mallikarachchi
Jul 20, 2018

Ideally, the exit flow angle for an impeller should be the same as the exit blade metal angle. However, the exit flow angle deviates from the blade guidance at the impeller exit due to the finite...

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Engine-Driven Compressor for Maintaining Aircraft Cabin Pressure

Engine-Driven Compressor for Maintaining Aircraft Cabin Pressure

By Dan Hinch
Jul 11, 2018

Commercial and military aircraft require that preset levels be maintained for aircraft cabin pressure, airflow, temperature, and humidity — regardless of flight altitude and aircraft speed. To...

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What is a Consortium, and Why Would You Join One?

What is a Consortium, and Why Would You Join One?

By Dr. David Schowalter
Mar 16, 2018

Merriam-Webster’s definition is, “an agreement, combination, or group (as of companies) formed to undertake an enterprise beyond the resources of any one member.”  The word is Latin, derived from...

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Compressor Design: Influence of the Impeller Exit Blade Angle

Compressor Design: Influence of the Impeller Exit Blade Angle

By Dimitri Deserranno
Jan 19, 2018

During the compressor design process, one of the key optimization steps is to adjust the impeller exit blade angle with the goal of achieving the desired pressure ratio, efficiency and range.   When...

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What Next for Wider Flow Range Centrifugal Compressors?

What Next for Wider Flow Range Centrifugal Compressors?

By Dr. Colin Osborne
Sep 21, 2017

Flow range is an essential consideration in the design of any centrifugal compressor system, regardless of the application. Adequate flow range is necessary, not only to assure that various...

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