SpinOffs

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

Posts about 3D Design

How the Design of a Wind Turbine Differs from Other Types

How the Design of a Wind Turbine Differs from Other Types

By Kerry Oliphant
Mar 1, 2019

Wind power generation is rapidly growing worldwide, and with that growth, demand for wind turbine design engineers is also growing.  However, an engineer who has experience designing turbines in most...

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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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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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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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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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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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A Small Taste of Two Papers from Turbo Expo 2018 in Norway

A Small Taste of Two Papers from Turbo Expo 2018 in Norway

By Barbara Shea
Jun 14, 2018

The 2018 ASME Turbo Expo in Lillestrøm, Norway was, as always,  a smorgasbord of papers and presentations on the latest and greatest ideas in turbomachinery and gas turbines. Two of our favorites...

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Film Cooling In Turbines

Film Cooling In Turbines

By Song Xue
May 24, 2018

Turbine inlet temperature is one of the most critical parameters in the Brayton cycle of gas turbine engines. One way to increase the cycle efficiency is to increase the turbine inlet temperature, as...

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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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Great Designs Deserve to Shine

Great Designs Deserve to Shine

By George C. Zitka, P.E.
May 4, 2018

If you are a turbomachinery engineer, you know you can spend days, weeks, or even months analyzing various design iterations, looking for the optimal choice for the application.  When you go to...

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Preliminary Sizing of Supersonic Turbines with Partial Admission for Best Performance Using AXIAL™

Preliminary Sizing of Supersonic Turbines with Partial Admission for Best Performance Using AXIAL™

By Oleg Dubitsky
Apr 27, 2018

Many energy recovery, drive cycles (Organic and Steam Rankine cycles) and rocket propulsion cycles require the use of a turbine that operates at low volumetric flow and high-pressure ratio....

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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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Optimizing the Screw Inducer for a Pump

Optimizing the Screw Inducer for a Pump

By Oleg Dubitsky
Feb 16, 2018

High-efficiency, low-cavitation pumps often require a screw type inducer to treat the inflow to the main radial/mixed flow pump blades. Efficiency and head rise, split between inducer and main pump,...

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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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Optimization of Cycle Parameters, Fuel Consumption, and Weight of a Turboshaft Engine Using 1D Design Tools

Optimization of Cycle Parameters, Fuel Consumption, and Weight of a Turboshaft Engine Using 1D Design Tools

By Oleg Dubitsky
Jun 1, 2017

New engine development is a costly endeavor and making the right decisions early in the engine design is extremely important. It requires multi-disciplinary consideration of the engine thermodynamic...

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