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Journal Articles

The Manufacturing and Experimental Validation of a Nickel Superalloy Double-Wall, Effusion Test Specimen

Alexander Murray, Peter Ireland, Nick Green, Michael Wickins, Richard Hood, Janendra Telisinghe

Publisher: ASME

J. Eng. Gas Turbines Power.

Paper No: GTP-23-1326

https://doi.org/10.1115/1.4063448

Published Online: September 16, 2023

.... Lund, and J. D. Todd, Engineering Tables and Data, 3rd ed. Department of Engineering Science, University of Oxford, 2009. [34] H. Moustapha, M. F. Zelesky, N. C. Baines, and D. Japikse, Axial and Radial Turbines. USA: Concepts NREC, 2003. [35] G. S. Azad, J.-C. Han, S. Tend, and R. J. Boyle, Heat...

View Article titled, The Manufacturing and Experimental Validation of a Nickel Superalloy Double-Wall, Effusion Test Specimen

Topics: Manufacturing, Nickel, Superalloys, Cooling, Combustion chambers, Crystals, Film cooling, Firing, Flat plates, High pressure (Physics)

Journal Articles

Fluid-thermal-structural Analysis of Partial Admission Axial Impulse Turbines with Liquid Jet Impingement Cooling

Hanwei Wang, Kai Luo, Ruoyang Zhi, Kan Qin

Publisher: ASME

J. Turbomach.

Paper No: TURBO-23-1039

https://doi.org/10.1115/1.4063410

Published Online: September 13, 2023

... Turbomachinery 644 645 REFERENCES 646 647 [1] Moustapha H., Zelesky M. F., Baines N. C., Japikse D., 2003, Axial and Radial Turbines, 648 Concepts NREC Press, White River Junction, VT. ISSBN: 0-933283-12-0 649 650 [2] Zhengping Z., Songtao W., Huoxing L., Weihao Z., 2018, Axial Turbine Aerodynamics 651 for Aero...

View Article titled, Fluid-thermal-structural Analysis of Partial Admission Axial Impulse Turbines with Liquid Jet Impingement Cooling

Topics: Fluids, Impingement cooling, Impulse (Physics), Turbines, Turbochargers, Cooling, Computational fluid dynamics, Underwater vehicles, Water, Wheels

Journal Articles

Ammonia as an Aircraft Fuel: A Critical Assessment From Airport to Wake

Marcel Otto, Ladislav Vesely, Jayanta Kapat, Michael Stoia, Nicholas D. Applegate, Gregory Natsui

ASME Open J. Engineering. January 2023, 2: 021033.

Paper No: AOJE-22-1055

https://doi.org/10.1115/1.4062626

Published Online: June 19, 2023

... in Gas Turbine Analysis Software ,” Appl. Therm. Eng. , 172 , p. 115087 . 10.1016/j.applthermaleng.2020.115087 [91] Moustapha , H. , Zelesky , M. F. , Baines , N. C. , and Japikse , D. , 2003 , Axial and Radial Turbines , Concepts NREC , White River Junction, VT . [92...

View Article titled, Ammonia as an Aircraft Fuel: A Critical Assessment From Airport to Wake

Topics: Aircraft, Aviation, Emissions, Engines, Fuels, Hydrogen, Sustainable aviation fuels, Temperature, Turbines, Heat exchangers

Journal Articles

On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Lee Gibson, Stephen Spence, Charles Stuart, Andre Starke, Sung In Kim

J. Turbomach. July 2023, 145(7): 071006.

Paper No: TURBO-22-1334

https://doi.org/10.1115/1.4056714

Published Online: February 10, 2023

... Flows ,” AIAA J. , 26 ( 11 ), pp. 1311 – 1320 . 10.2514/3.10042 [9] ANSYS , 2017 , ANSYS 17.2 CFX-Solver Theory Guide , ANSYS, Inc. , Canonsburg, PA . [10] Japikse , D. , 1996 , Centrifugal Compressor Design and Performance , Concepts NREC , White River Junction, VT...

View Article titled, On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Topics: Clearances (Engineering), Compressors, Computational fluid dynamics, Diffusers, Flow (Dynamics), Geometry, Pressure, Surges, Stability

Proceedings Papers

Hydrogen Compression - Towards a New Strategy for the Design of Hydrogen Compressors

Jonna Tiainen, Teemu Turunen-Saaresti, Mikko Mäki-Iso, Sebastian Schuster, Dieter Brillert

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A001, June 13–17, 2022

Paper No: GT2022-78626

https://doi.org/10.1115/GT2022-78626

... Scienti c & Technical. p. 509. ISBN 0582-01364-X. [10] Korpela, S. A., 2011. Principles of Turbomachinery. John Wiley & Sons, Inc. p. 457. [11] Di Bella, F. A., 2015. Development of a Centrifugal Hydrogen Pipeline Gas Compressor. Tech. Rep. TM-1785, Concepts ETI, Inc. dba Concepts NREC, apr. [12] Heshmat...

View Paper titled, Hydrogen Compression - Towards a New Strategy for the Design of Hydrogen Compressors

Topics: Compression, Compressors, Design, Hydrogen, Impellers, Blades, Flow (Dynamics), Transportation systems, Energy storage, Pipelines

Proceedings Papers

On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Lee Gibson, Stephen Spence, Charles Stuart, Andre Starke, Sung In Kim

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A011, June 13–17, 2022

Paper No: GT2022-82423

https://doi.org/10.1115/GT2022-82423

.... Turbomach., 139(7), pp. 071011-1-071011-9. [10] ANSYS, 2017, ANSYS 17.2 CFX-Solver Theory Guide, ANSYS, Inc., Canonsburg, PA. [11] Japikse, D., 1996, Centrifugal Compressor Design and Performance, Concepts NREC, White River Junction, VT. [12] Shum, Y. K. P., Tan, C. S., and Cumpsty, N. A., 2000, "Impeller...

View Paper titled, On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Topics: Clearances (Engineering), Compressors, Diffusers

Proceedings Papers

Numerical Investigation on Radial Turbines Aerodynamics Aimed at the Definition of Design Rules for Industrial Applications

Fabrizio Lottini, Michele Marconcini, Andrea Arnone, Davide Biliotti, Lorenzo Toni

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT35A009, June 13–17, 2022

Paper No: GT2022-82266

https://doi.org/10.1115/GT2022-82266

.../GT2010-23649. [21] Moustapha, H., Zelesky, M. F., Baines, N. C., and Japikse, D., 2003. Axial and radial turbines, Vol. 2. concepts NREC White River Junction, VT. [22] Arnone, A., 1994. Viscous analysis of three-dimensional rotor flow using a multigrid method . J. Turbomach., 116, pp. 435 445. DOI...

View Paper titled, Numerical Investigation on Radial Turbines Aerodynamics Aimed at the Definition of Design Rules for Industrial Applications

Topics: Aerodynamics, Design, Turbines, Metals, Wheels, Geometry, Stiffness, Flow (Dynamics), Turbochargers, Computational fluid dynamics

Proceedings Papers

Numerical Analysis of an Axial High Pressure Partial Admission Turbine

Heng Hu, Per Askebjer, Magnus Genrup, Narmin Hushmandi

Proc. ASME. GT2022, Volume 10B: Turbomachinery — Axial Flow Turbine Aerodynamics; Deposition, Erosion, Fouling, and Icing; Radial Turbomachinery Aerodynamics, V10BT30A015, June 13–17, 2022

Paper No: GT2022-81908

https://doi.org/10.1115/GT2022-81908

... of the stator and rotor blades in the radial direction. The stage design and parametrization of the blade profiles were done using Concepts NREC design tools, Axial and AxCent. The available steam mass flow rate was small; therefore, a partial admission design was necessary to avoid extreme losses due to very...

View Paper titled, Numerical Analysis of an Axial High Pressure Partial Admission Turbine

Topics: Computational fluid dynamics, High pressure (Physics), Numerical analysis, Stress, Turbines

Proceedings Papers

Rotor37 Aerodynamic Optimization: A Machine Learning Approach

Klajdi Beqiraj, Andrea Perrone, Marco Sanguineti, Luca Ratto, Gianluca Ricci

Proc. ASME. GT2022, Volume 10D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Turbomachinery General Interest; Unsteady Flows in Turbomachinery, V10DT34A021, June 13–17, 2022

Paper No: GT2022-83063

https://doi.org/10.1115/GT2022-83063

.... The three-dimensional representation of the analyzed axial compressor row is defined by meridional contours of hub and shroud and the main blade (Figure 2). The management of the geometry and its parameterization is carried out through Concepts NREC AxCent®. For the generation of the blade, we use...

View Paper titled, Rotor37 Aerodynamic Optimization: A Machine Learning Approach

Topics: Machine learning, Optimization

Proceedings Papers

Sensitivity Analysis of Impeller Blade Parameters to Compressor Performance and Aerodynamic Noise

Cao Yipeng, Ma Zequn, Liu Chen

Proc. ASME. GT2022, Volume 7: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Microturbines, Turbochargers, and Small Turbomachines; Oil & Gas Applications, V007T18A010, June 13–17, 2022

Paper No: GT2022-81705

https://doi.org/10.1115/GT2022-81705

... a commercial software Concepts NREC. The hub line, shroud line and the blade characteristic lines were first discretized into fitting points. Then, the pressure surface and suction surface of the blade were fitted with the fitting points of blade characteristic lines. Finally, the inversed blade model...

View Paper titled, Sensitivity Analysis of Impeller Blade Parameters to Compressor Performance and Aerodynamic Noise

Topics: Aerodynamic noise, Blades, Compressors, Impellers, Sensitivity analysis

Proceedings Papers

Ammonia as an Aircraft Fuel: Thermal Assessment From Airport to Wake

Marcel Otto, Ladislav Vesely, Jayanta Kapat, Michael Stoia, Nicholas D. Applegate, Greg Natsui

Proc. ASME. GT2022, Volume 2: Coal, Biomass, Hydrogen, and Alternative Fuels; Controls, Diagnostics, and Instrumentation; Steam Turbine, V002T03A023, June 13–17, 2022

Paper No: GT2022-84359

https://doi.org/10.1115/GT2022-84359

...., Baines, N. C., and Japikse, D., 2003, Axial and radial turbines, concepts NREC White River Junction, VT. [83] Downs, J. P., and Landis, K. K., "Turbine Cooling Systems Design: Past, Present and Future," Proc. Turbo Expo: Power for Land, Sea, and Air, pp. 819-828. [84] Bunker, R. S., 2006, "Cooling design...

View Paper titled, Ammonia as an Aircraft Fuel: Thermal Assessment From Airport to Wake

Topics: Aircraft, Fuels, Wakes, Aviation, Emissions, Hydrogen, Cooling, Biofuel, Carbon, Compressors

Journal Articles

Modeling of Dynamic Response of a Radial Turbine to Pulsatile Incoming Flow

Mingyang Yang, Yingxian Xue, Lei Pan, Bijie Yang, Ricardo Martinez-Botas

J. Turbomach. March 2023, 145(3): 031005.

Paper No: TURBO-22-1066

https://doi.org/10.1115/1.4055641

Published Online: October 17, 2022

... of Pumps , Concepts NREC & Oxford University Press , Oxford, UK . [25] Yang , M. Y. , Padzillah , M. H. , Zhuge , W. L. , Martinez Botas , R. F. , and Rajoo , S. , 2014 , “ Comparison of the Influence of Unsteadiness Between Nozzled and Nozzleless Mixed Flow Turbocharger...

View Article titled, Modeling of Dynamic Response of a Radial Turbine to Pulsatile Incoming Flow

Topics: Flow (Dynamics), Torque, Turbines, Rotors, Modeling

Journal Articles

Suppression of Cavitation Instabilities in an Inducer by the Circumferential Groove With Swirl Breakers

Hironori Horiguchi, Kota Tsubouchi, Masakazu Toyoshima, Kazuyasu Sugiyama

J. Fluids Eng. November 2022, 144(11): 111204.

Paper No: FE-22-1011

https://doi.org/10.1115/1.4054706

Published Online: June 28, 2022

... of the Influence of Backflow Control on Pump Hydraulic-Mechanical Interaction ,” Proc. the Second International Pump Symposium , College Station, TX, pp. 33 – 40 . 10.21423/R15T2V [12] Japikse , D. , 2004 , “ Flow Stabilizing Device ,” Concepts NREC LLC, Hartford, VT, U.S Patent No. US 6,699,008B2...

View Article titled, Suppression of Cavitation Instabilities in an Inducer by the Circumferential Groove With Swirl Breakers

Topics: Blades, Cavitation, Flow (Dynamics), Pressure, Vortices, Computer simulation, Fluctuations (Physics), Suction

Journal Articles

Performance Optimization of the High-Pressure Compressor in Series Two-Stage Turbocharging System Based on Low-Speed Performance Requirements of Diesel Engine

Dingkun Liang, Hanqian Yang, Qingbin Li, Cheng Xu, Qiuyuan Xie

J. Eng. Gas Turbines Power. August 2022, 144(8): 081008.

Paper No: GTP-21-1642

https://doi.org/10.1115/1.4054747

Published Online: June 20, 2022

... Compressors ,” Int. J. Rotating Mach. , 2012 , pp. 1 – 15 . 10.1155/2012/184061 [29] Japikse , D. , Centrifugal Compressor Design and Performance , Concept NREC , Wilder, VT , p. 996 . Copyright © 2022 by ASME 2022 0742-4795/2022/144(8)/081008/13/ $25.00 ...

View Article titled, Performance Optimization of the High-Pressure Compressor in Series Two-Stage Turbocharging System Based on Low-Speed Performance Requirements of Diesel Engine

Topics: Compressors, Design, Diesel engines, Engines, Flow (Dynamics), Optimization, Pressure, Turbochargers, High pressure (Physics), Emissions

Journal Articles

Simplified Improvement of Higher Order Extended Bulk Flow Analysis Specialized for Derivation of Rotordynamic Coefficients of the Annular Plain Seal With Large Static Eccentricity

T. Inoue, K. Yamada

J. Comput. Nonlinear Dynam. October 2022, 17(10): 101003.

Paper No: CND-21-1191

https://doi.org/10.1115/1.4054680

Published Online: June 16, 2022

..., NJ . [2] Brennen , C. E. , 1994 , Hydrodynamics of Pumps , Consepts ETI , Concepts NREC, White River Junction, VT. [3] Moore , J. J. , 2003 , “ Three-Dimensional CFD Rotordynamic Analysis of Gas Labyrinth Seals ,” ASME J. Vib. Acoust. , 125 ( 4 ), pp. 427 – 433...

View Article titled, Simplified Improvement of Higher Order Extended Bulk Flow Analysis Specialized for Derivation of Rotordynamic Coefficients of the Annular Plain Seal With Large Static Eccentricity

Topics: Clearances (Engineering), Flow (Dynamics), Fluids, Whirls

Journal Articles

Performance Improvement of a Mixed Flow Turbine Using 3D Blading

Matthew Elliott, Stephen Spence, Martin Seiler, Marco Geron

J. Turbomach. October 2022, 144(10): 101004.

Paper No: TURBO-20-1400

https://doi.org/10.1115/1.4053855

Published Online: April 19, 2022

.... Mech. Eng. Conf. Proc. , 178 ( 2 ), pp. 28 – 42 . 10.1243/PIME_CONF_1963_178_214_02 [3] Moustapha , H. , Zelesky , M. F. , Baines , N. C. , and Japikse , D. , 2003 , “ Radial Turbine Design ,” Axial and Radial Turbines , Concepts/NREC , White River Junction, VT , p. 277...

View Article titled, Performance Improvement of a Mixed Flow Turbine Using 3D Blading

Topics: Blades, Design, Flow (Dynamics), Optimization, Turbines, Pressure, Entropy, Computational fluid dynamics

Journal Articles

Influence of Geometric Variations of an Inlet Cover Bleed System on Inducer Performance for an Axial Pump Operating Under Cavitating Conditions

Ryan K. Lundgreen, Daniel Maynes, Steve Gorrell, Kerry Oliphant

J. Fluids Eng. August 2022, 144(8): 081402.

Paper No: FE-21-1315

https://doi.org/10.1115/1.4053648

Published Online: March 7, 2022

... a converged solution. Water rig test data were provided by concepts NREC over a wide range of cavitation numbers. These data were previously compared to results from CFD simulations for the 7 deg blade angle inducer with and without an SCD (corresponding to the SCD2 geometry) at ϕ = 0.042 and 0.07...

View Article titled, Influence of Geometric Variations of an Inlet Cover Bleed System on Inducer Performance for an Axial Pump Operating Under Cavitating Conditions

Topics: Blades, Cavitation, Flow (Dynamics), Geometry, Pumps, Fluids

Journal Articles

Analysis, Design, and Validation of a Vaned Diffuser for Improved Fish Friendliness

Qiang Pan, Weidong Shi, Desheng Zhang, B. P. M. Van Esch

J. Fluids Eng. May 2022, 144(5): 051502.

Paper No: FE-21-1428

https://doi.org/10.1115/1.4052735

Published Online: January 12, 2022

.... , Stacy , P. , Lin , F. , and Taft , E. , 2003 , “ Pilot Scale Tests Alden/Concepts NREC Turbine (No. DOE/ID/13733) ,” Alden Research Laboratory (US), Holden, MA. [12] Van Esch , B. P. M. , and Spierts , I. L. Y. , 2014 , “ Validation of a Model to Predict Fish...

View Article titled, Analysis, Design, and Validation of a Vaned Diffuser for Improved Fish Friendliness

Topics: Diffusers, Impellers, Pumps, Damage, Flow (Dynamics), Design

Proceedings Papers

Design Point Performance Trends for Water Vapor Compressors

Nicholas C. D’Orsi, Sharon E. Wight, Tsukasa Yoshinaka

Proc. ASME. IMECE2001, Process Industries, 43-51, November 11–16, 2001

Paper No: IMECE2001/PID-25605

https://doi.org/10.1115/IMECE2001/PID-25605

... as the cost of the machine. Proceedings of 2001 ASME International Mechanical Engineering Congress and Exposition November 11-16,2001, New York, NY PID-Vol. 6 IMECE2001 /PID-25605 DESIGN POINT PERFORMANCE TRENDS FOR WATER VAPOR COMPRESSORS Nicholas C. D'Orsi Concepts NREC Sharon E. Wight Concepts NREC...

View Paper titled, Design Point Performance Trends for Water Vapor Compressors

Topics: Compressors, Design, Water vapor, Machinery, Geometry, Flow (Dynamics), Tradeoffs

Proceedings Papers

On Establishing the Limits of a Virtual Test Rig

D. Lee Hill, Zheji Liu, Jim Sorokes

Proc. ASME. IMECE2001, Process Industries, 53-67, November 11–16, 2001

Paper No: IMECE2001/PID-25606

https://doi.org/10.1115/IMECE2001/PID-25606

.... As the flow is lowered more, this region will grow in size The concept of a virtual test rig or numerical wind eventually causing the periodic flow assumption to be tunnel has been around since the middle 1980's. Early violated, as well as, amplifying the unsteady flow effects supporters of the idea believed...

View Paper titled, On Establishing the Limits of a Virtual Test Rig

Topics: Approximation, Compressors, Computational fluid dynamics, Computer software, Design, Flow (Dynamics), Hardware, Modeling, Rotors, Steady state

Journal citation

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concepts nrec

The Manufacturing and Experimental Validation of a Nickel Superalloy Double-Wall, Effusion Test Specimen

Fluid-thermal-structural Analysis of Partial Admission Axial Impulse Turbines with Liquid Jet Impingement Cooling

Ammonia as an Aircraft Fuel: A Critical Assessment From Airport to Wake

On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Hydrogen Compression - Towards a New Strategy for the Design of Hydrogen Compressors

On the Effect of Side Clearance in the Vaned Diffuser of a Centrifugal Compressor

Numerical Investigation on Radial Turbines Aerodynamics Aimed at the Definition of Design Rules for Industrial Applications

Numerical Analysis of an Axial High Pressure Partial Admission Turbine

Rotor37 Aerodynamic Optimization: A Machine Learning Approach

Sensitivity Analysis of Impeller Blade Parameters to Compressor Performance and Aerodynamic Noise

Ammonia as an Aircraft Fuel: Thermal Assessment From Airport to Wake

Modeling of Dynamic Response of a Radial Turbine to Pulsatile Incoming Flow

Suppression of Cavitation Instabilities in an Inducer by the Circumferential Groove With Swirl Breakers

Performance Optimization of the High-Pressure Compressor in Series Two-Stage Turbocharging System Based on Low-Speed Performance Requirements of Diesel Engine

Simplified Improvement of Higher Order Extended Bulk Flow Analysis Specialized for Derivation of Rotordynamic Coefficients of the Annular Plain Seal With Large Static Eccentricity

Performance Improvement of a Mixed Flow Turbine Using 3D Blading

Influence of Geometric Variations of an Inlet Cover Bleed System on Inducer Performance for an Axial Pump Operating Under Cavitating Conditions

Analysis, Design, and Validation of a Vaned Diffuser for Improved Fish Friendliness

Design Point Performance Trends for Water Vapor Compressors

On Establishing the Limits of a Virtual Test Rig

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concepts nrec

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