Concepts NREC SpinOffs | Turbomachinery Blog

Use of Optimization in Turbomachinery Design Process

by Akshay Bagi, General Manager, Concepts NREC India Private Limited on Jun 4, 2021 11:00:00 AM

Introduction: With the advancements in computation power, optimization is not just limited to academics and research anymore. It can now be realistically used for industrial designs. There are several optimization software available in the market which utilize various powerful optimization techniques but not every software can be practical for industrial applications. This is especially true for the turbomachinery industry. Turbomachinery design is coupled with aero and mechanical optimization. The problems are highly constrained and usually involve non-linear functions. The optimization algorithm needs to be efficient to handle such problems.

Topics: CFD AxCent DoE Multi-point Optimization Surrogate Based Optimization Radial Compressor Evolutionary Algorithm Artificial Neural Network

2020 Software Release Feature Highlight: Axial Design in AxCent®

by Steve Kohr, Associate Director, CAE Product Management on Oct 16, 2020 11:00:00 AM

AxCent® has long been recognized as the premier 3D design software for turbomachinery components.

Topics: Future of CAE Software for Turbomachinery CAE Software AxCent

Practical Application of Multidisciplinary Optimization

by Dr. Peter Weitzman & Steve Kohr on Jul 26, 2019 8:59:39 AM

If you design turbomachinery for a living, you are already doing multidisciplinary optimization (MDO), regardless of whether you have a special software tool with MDO built in or not. Turbomachines, by their nature, require advanced fluid dynamics as well as very high mechanical complexity. Whenever you make a trade-off between performance and durability or performance and weight/inertia, you are doing an MDO study. Adding MDO software to your traditional design approaches can give you additional insight into the trade-offs, and save you time by avoiding the need for manual iteration.

Mechanical Design Variables from Pushbutton FEA

Topics: FINE/Turbo TurboOPT ll AxCent Turbomachinery Design

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

by Barbara Shea on Feb 8, 2019 10:54:50 AM

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 captures the way you feel about someone, while also reflecting who you are. Well, Concepts NREC has created some turbomachinery-themed Valentine’s Day cards for engineers. These fall into the Art end of our Art-to-Part Solution.

Topics: CAE Software Axial Turbines Compressors Agile Engineering Design System Software CAM Software MAX-PAC Gas Turbines Turbochargers Engineering Manufacturing AxCent Turbomachinery Design Radial Compressor Design Turboshaft Engines 3D Design Refrigeration Aviation Volutes Centrifugal Compressors Radial Turbines

Do You Design Turbomachinery with a Pocketknife or a Sushi Knife?

by Thiago Ebel on Dec 21, 2018 9:47:00 AM

Years ago, I got a pocketknife as a gift, and I absolutely loved it, still do. It came in handy during my college years, when I was really into camping and trekking. As the years went by, it stayed relevant to my new interests, such as motorcycle trips and surfing. It has helped me open cans, remove sea urchin spurs, and install shelves in my apartment. It has also saved me time and money on several occasions by fixing my bike. It is incredible how tightening some screws and pulling some wires can save towing costs – and a sunny day.

Topics: CAE Software AxCent Turbomachinery Design

There is No Such Thing as a Design Point

by Dr. Peter Weitzman on Oct 26, 2018 10:00:00 AM

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 the speeds, altitudes and temperatures that the vehicles they power will encounter. In industrial and refrigeration applications, turbomachines need to have a wide operating range to make them appealing to end users who want efficiency under many operating conditions.

Radial COmpressor Optimization Base Case

Topics: Agile Engineering Design System Turbochargers FINE/Agile Optimization AxCent COMPAL Turbomachinery Design Radial Compressor Design 1D Design 3D Design Refrigeration Range Extension Casing Treatments Impeller

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

by Oleg Dubitsky on Aug 31, 2018 10:17:46 AM

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 reasons, including quality of the scanned blade, deviations produced by the measurement system, curve digitization errors, data digital rounding and truncation, and errors in reporting the data. This noise hampers quality surface reconstruction and masks the understanding of the design intent of the profiles. It also affects the accurate representation of the geometry, manufacturing complexity, and aero performance which forms the basis on which a design engineer can execute any design improvements.

Figure 4 Smoothed Curvatures with Bounded Corrections in Surface Data (overlays vs uncorrected curvatures)

Topics: Axial Blade Cooling Engineering Optimization AxCent Turbomachinery Design 1D Design 3D Design Aerodynamics

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

by Oleg Dubitsky on Apr 27, 2018 9:24:16 AM

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. Additional requirements include low cost, reduced weight, and reduced axial length (for robust rotor dynamics).

3D Geometry of Impulse Turbine in AxCent

Topics: Axial Rankine Cycle Turbines Agile Engineering Design System Engineering TurboOPT ll Optimization AxCent Turbomachinery Design 1D Design 3D Design

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

by Oleg Dubitsky on Apr 13, 2018 1:43:10 PM

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 profiles at the duct exit, delivered to the inlet of the first impeller, also affects the performance of the compressor.

AxCent View of Duct for Between Axial & Radial

Topics: Axial Turbines Compressors Gas Turbines Engineering TurboOPT ll Optimization AxCent Turbomachinery Design Radial Compressor Design Compressor Design 3D Design Aerodynamics Impeller Radial Turbines

Optimizing the Screw Inducer for a Pump

by Oleg Dubitsky on Feb 16, 2018 11:05:47 AM

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, are questions explored during the design process. Another important design consideration is the tolerance to cavitation. Finding the best solution, when there is often a trade-off between two or more operational conditions, is difficult. We have found that multi-objective optimization, for single or multiple operating points, is the best tool to use.

Topics: Pumps TurboOPT ll Optimization AxCent Turbomachinery Design 3D Design Cavitation

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Use of Optimization in Turbomachinery Design Process

2020 Software Release Feature Highlight: Axial Design in AxCent®

Practical Application of Multidisciplinary Optimization

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

Do You Design Turbomachinery with a Pocketknife or a Sushi Knife?

There is No Such Thing as a Design Point

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

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

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

Optimizing the Screw Inducer for a Pump

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