SpinOffs

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

Posts about Impeller

Designing Ruled Surfaces for Flank Milling

Designing Ruled Surfaces for Flank Milling

By Peter Klein
Mar 15, 2019

As discussed in my previous blog post, Flank Milling, How Hard Can it Be?, turbomachinery blades are commonly designed as ruled surfaces, with the goal of making manufacturing easier and faster with...

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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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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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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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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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Reaction Versus Impulse Type Turbomachinery

Reaction Versus Impulse Type Turbomachinery

By Mark R. Anderson
Mar 8, 2018

The universe of turbomachinery consists of many different design concepts that are radically different from one another. Each class of machine has a particular flow and power range that is best...

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Why You Need CAE & CAM Software Specialized for Turbomachinery

Why You Need CAE & CAM Software Specialized for Turbomachinery

By Dr. Peter Weitzman
Feb 2, 2018

Concepts NREC just had its most successful year ever in software sales. Why? It really comes down to two things, the first is our team, we have some incredibly talented people developing our software...

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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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