SpinOffs

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

Posts about Radial Compressor Design

Abstracts From Papers Presented at Turbo Expo 2019

Abstracts From Papers Presented at Turbo Expo 2019

By Barbara Shea
Jun 21, 2019

Wow, Concepts NREC had a lot going on at this year's ASME Turbo Expo 2019 in Phoenix, AZ! We held our North American CAE User Group Meeting, spoke to over 200 people at our booth, chaired several...

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What’s the Difference Between a Fan, a Blower, and a Compressor?

What’s the Difference Between a Fan, a Blower, and a Compressor?

By Dan Hinch
Jun 6, 2019

Turbomachinery equipment is generally segmented based on whether it extracts energy (e.g., turbines) or adds energy (e.g., pumps and compressors). The addition of energy is usually used to compress...

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Simple Stall - Video Blog - Part 2

Simple Stall - Video Blog - Part 2

By Mark R. Anderson
Apr 12, 2019

Our CTO, Mark Anderson, takes a fundamental look at simple stall and its impact on turbochargers stability and range. This is the second video in this 2-part series. Be sure to watch Part 1 first!

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Simple Stall - Video Blog - Part 1

Simple Stall - Video Blog - Part 1

By Mark R. Anderson
Apr 5, 2019

Our CTO, Mark Anderson, takes a fundamental look at simple stall and its impact on turbochargers stability and range. This is the first video in this 2-part series. 

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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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Specific Speed Demystified

Specific Speed Demystified

By Mark R. Anderson
Jan 11, 2019

In my blog Flow Coefficient and Work Coefficient, I outlined the basic concept behind the flow and work coefficient. These nondimensional parameters are widely used to characterize axial and radial...

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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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There is No Such Thing as a Design Point

There is No Such Thing as a Design Point

By Dr. Peter Weitzman
Oct 26, 2018

Most turbomachines need to operate across a range of fluid flow rates and speeds. This is obvious in transportation applications where gas turbine engines and turbochargers need to operate at all of...

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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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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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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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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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Flow Coefficient and Work Coefficient

Flow Coefficient and Work Coefficient

By Mark R. Anderson
Mar 22, 2018

Two often used quantities to characterize turbomachinery are flow coefficient and work coefficient.  The two are generally represented as Φ for flow coefficient and φ for work coefficient.  The...

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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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Shrouded or Open Impellers for Compressor Chillers - That is the Question

Shrouded or Open Impellers for Compressor Chillers - That is the Question

By Steve Kohr
Aug 2, 2017

One of the most important design choices facing a chiller compressor designer is whether to utilize open or shrouded impellers. The impacts of this verdict are wide ranging, which arguably makes this...

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Turbomachinery Textbooks Focused on Engineering Design

Turbomachinery Textbooks Focused on Engineering Design

By Barbara Shea
Jul 14, 2017

The vast majority of turbomachinery textbooks emphasize analysis when the heart of engineering is based in design. Concepts NREC is uniquely qualified to share the nature and process of engineering...

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