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Relevant bibliographies by topics / Tandem impeller

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Academic literature on the topic 'Tandem impeller'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Tandem impeller"

1

Roberts, Douglas A., and Suresh C. Kacker. "Numerical Investigation of Tandem-Impeller Designs for a Gas Turbine Compressor." Journal of Turbomachinery 124, no. 1 (2001): 36–44. http://dx.doi.org/10.1115/1.1413472.

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The tandem-bladed impeller centrifugal compressor, which may offer potential aerodynamic benefits over conventional designs, is rarely employed in production gas turbine applications. Conventional impeller designs are often favored because of concerns for both significant performance losses and increased manufacturing costs associated with tandem configurations. In addition, much of the available literature concerning the characteristics of tandem-impellers is inconclusive, and at times contradictory. Because of the scarcity of tandem-impellers, rules for their design are nearly nonexistent. A

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2

Li, Ziliang, Xingen Lu, Ge Han, Yanfeng Zhang, Shengfeng Zhao, and Junqiang Zhu. "The performance of a centrifugal compressor with a tandem impeller in off-design conditions." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 234, no. 2 (2019): 156–72. http://dx.doi.org/10.1177/0957650919848614.

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Centrifugal compressors often suffer relatively low efficiency and a terrible operating range particularly due to the complex flow structure and intense impeller/diffuser interaction. Numerous studies have focused on improving the centrifugal compressor performance using many innovative ideas, such as the tandem impeller, which has become increasingly attractive due to its ability to achieve the flow control with no additional air supply configurations and control costs in compressor. However, few studies that attempted to the investigation of tandem impeller have been published until now and

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3

Li, Ziliang, Xingen Lu, Yanfeng Zhang, Ge Han, Chengwu Yang, and Shengfeng Zhao. "Numerical investigation of a highly loaded centrifugal compressor stage with a tandem bladed impeller." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 3 (2017): 240–53. http://dx.doi.org/10.1177/0957650917725406.

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This study numerically investigated a highly loaded centrifugal compressor stage with various tandem-designed impellers and a wedge diffuser using a state-of-the-art multi-block flow solver to better understand the fundamental mechanism of tandem impellers. The flow topologies in the impeller are analyzed in detail to identify the underlying physical mechanism of the effect of the tandem-impeller design on the performance of the compressor stage. Particular emphasis is placed on the evolution of the flow structure in the tandem bladed impeller by varying the inducer–exducer clocking arrangemen

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4

Балалаев, Антон Валерьевич, Екатерина Викторовна Балалаева та Юрий Юрьевич Терещенко. "Моделювання течії в дворядному вентиляторі турбореактивного двоконтурного двигуна". Aerospace technic and technology, № 4sup1 (27 серпня 2021): 19–24. http://dx.doi.org/10.32620/aktt.2021.4sup1.03.

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Modern trends in the global aircraft industry are prompting aircraft engine engineers to create and develop various methods to improve the aerodynamic characteristics of turbomachines. The urgent need to improve the efficiency of new generation engines leads to a rapid increase in the bypass ratio of engines, which requires the development of fans with large diametrical dimensions and high aerodynamic perfection. Boundary layer control in turbomachines using tandem blade rows is one of the most promising ways to improve the aerodynamic characteristics of aircraft engine fans with a high bypass

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5

Huang, Jun, Fengchuan Zheng, Yuhu Wang, Tairan Chen, and Yana Wang. "Study on the transient cavitation characteristics in an axial flow tandem pump during the rapid starting period." Journal of Physics: Conference Series 2854, no. 1 (2024): 012034. http://dx.doi.org/10.1088/1742-6596/2854/1/012034.

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Abstract In axial flow pump systems constrained by limited internal space, the advantages of axial flow tandem pumps are high space utilization, strong power capacity, and great thrust. The onset of cavitation during the rapid starting period poses a classic issue for tandem axial flow pumps, resulting in issues like noise, vibration, cavitation breakdown, and material damage. This article aims to investigate the transient cavitation characteristics of each flow passage component of an axial flow tandem pump during the rapid starting period by numerical simulation method. It is compared that t

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6

Shi, Xiaobing, Jinling Lu, and Lianming Zhao. "Investigations on the influence of tandem blades on inner flow and performance characteristics of centrifugal pump." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 1 (2019): 46–55. http://dx.doi.org/10.1177/0954408919883730.

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Although significant advances have been made in tandem-blade technology for axial and centrifugal compressors, little attention has been paid to its application in centrifugal pumps. In this study, we propose a new tandem-blade design method for improving inner flow characteristics and overall performance of a centrifugal pump. With the SST k − ω turbulence model, three-dimensional turbulent flow fields in the centrifugal pump with tandem blades are simulated and analyzed. The effects of tandem blades on the inner flow and performance characteristics of the centrifugal pump are investigated. T

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7

Li, Ziliang, Yanhui Wu, and Xingen Lu. "Performance Improvement of a Highly Loaded Transonic Centrifugal Compressor with Tandem Impeller and Freeform Blade Configuration." Energies 15, no. 24 (2022): 9283. http://dx.doi.org/10.3390/en15249283.

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A highly loaded transonic centrifugal compressor is aerodynamically designed and numerically investigated. The objectives are to improve the compressor efficiency by using tandem impeller configuration and 3D free-formed blade design concepts. This approach has the potential to control both the transonic and distorted flows within impeller passages. The results suggest that employing the tandem impeller configuration can significantly improve the compressor efficiency by 1.4%. The efficiency gain is mainly contributed by the improved uniformity of the impeller discharge flow achieved when the

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8

Stuparu, Adrian, Romeo Susan-Resiga, and Alin Bosioc. "Improving the Homogenization of the Liquid-Solid Mixture Using a Tandem of Impellers in a Baffled Industrial Reactor." Applied Sciences 11, no. 12 (2021): 5492. http://dx.doi.org/10.3390/app11125492.

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The paper explores a tandem configuration of three-blade impellers in a stirred reactor. The working fluid is a liquid-solid mixture and the stirring mechanism fitted with the two impellers must prevent the sedimentation of solid particles while homogenously dispersing them in the bulk liquid. The present numerical investigation, performed with the expert software Ansys® Fluent, Release 16, employs the Eulerian multiphase model along with the RNG k–ε turbulence model to simulate the free-surface liquid–solid flows in the baffled stirred reactor. A sliding mesh approach is used to model the imp

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9

Josuhn-Kadner, B., and B. Hoffmann. "Investigations on a Radial Compressor Tandem-Rotor Stage With Adjustable Geometry." Journal of Turbomachinery 115, no. 3 (1993): 552–59. http://dx.doi.org/10.1115/1.2929289.

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A radial compressor stage has been investigated mainly experimentally for aerodynamic stage optimization. The rotor (πt = 3.9) consists of a profiled axial inducer and a conventionally designed radial impeller. Inducer and impeller can be locked at different circumferential positions relative to each other, thus forming a tandem wheel with adjustable geometry. Conventional and Laser-2-Focus system measurements for the tandem rotor and the stage were performed at different operating points to study the influence of the circumferential clearance geometry between inducer and impeller with respect

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10

Doroshenko, E. V., Yu M. Tereshchenko, Yu Yu Tereshchenko, and A. O. Kushchinskiy. "Aeroacoustic characteristics of the axial compressor stage with tandem impeller." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 1 (February 2019): 48–54. http://dx.doi.org/10.29202/nvngu/2019-1/9.

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Dissertations / Theses on the topic "Tandem impeller"

1

Renaud, Philippe. "Computational study of 3D turbulent flow in a tandem inducer/impeller rocket pump rotor." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-01312009-063439/.

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2

Балалаєв, Антон Валерійович, та Anton Balalaiev. "Характеристики решітчастого дворядного робочого колеса вентилятора двоконтурного турбореактивного двигуна". Thesis, Національний авіаційний університет, 2021. https://er.nau.edu.ua/handle/NAU/48802.

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Дисертаційну роботу присвячено вирішенню науково-прикладної задачі підвищення ефективності дворядних лопаткових вінців вентиляторів двоконтурних турбореактивних двигунів шляхом застосування решітчастих дворядних робочих коліс. Вперше отримано характеристики решітчастого дворядного робочого колеса вентилятора ТРДД методом чисельного експерименту. Показано, що застосування решітчастих дворядних РК забезпечує підвищення ефективності вентилятора, збільшує його напірність. Ступінь підвищення тиску в діапазоні режимів обертання ротору від 2202…3010 об/хв збільшується до 10 % в порівнянні з дворядни

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Book chapters on the topic "Tandem impeller"

1

Alexis-Ruiz, Adrian, and Marisa Cevasco. "Right Ventricular Assist Device Therapies." In Cardiothoracic Critical Care. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780190082482.003.0022.

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This chapter discusses right ventricular assist device (RVAD) therapies. Current RVAD options include the Impella Right Peripheral, the Tandem Heart, the Protek Duo system, and a surgically placed CentriMag RVAD. Important considerations when choosing a device include operator familiarity, the need for an oxygenator, the availability of a surgeon, and specific contraindications such as severe tricuspid regurgitation, an occluded internal jugular vein, or the presence of an inferior vena cava filter. It is important to consider the hemodynamic effects on the left ventricle (LV) after placement

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Conference papers on the topic "Tandem impeller"

1

Roberts, Douglas A., and Suresh C. Kacker. "Numerical Investigation of Tandem-Impeller Designs for a Gas Turbine Compressor." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0324.

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Abstract:

The tandem-bladed impeller centrifugal compressor, which may offer potential aerodynamic benefits over conventional designs, is rarely employed in production gas-turbine applications. Conventional impeller designs are often favored because of concerns for both significant performance losses and increased manufacturing costs associated with tandem configurations. In addition, much of the available literature concerning the characteristics of tandem-impellers is inconclusive, and at times contradictory. Because of the scarcity of tandem-impellers, rules for their design are nearly non-existent.

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2

Tsugawa, Takuji. "Case Study of Tandem Impeller Rotating at Different Speeds." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72019.

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In previous study, the optimum meridian profile of tandem impeller rotating at the same speed was obtained by means of calculation of efficiency and suction specific speed considering two diffusion factors of tandem impeller. The effect of theoretical head ratio between the first impeller and the second impeller was obtained. In this study, the optimum meridian profile and design parameters of tandem impeller rotating at two kinds of different speed was obtained. In the process of this study, a lot of design parameters were needed. Therefore, in the optimum calculation process the predominant

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3

Tsugawa, Takuji. "The Difference of the Optimum Meridian Profile Between Tandem Impeller and Conventional Impeller." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16016.

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In previous study, the optimum meridian profile of tandem impeller rotating at different speeds was obtained. As the first impeller was rotated at low speed rather than the second impeller, the performance of tandem impeller was improved in the calculation. In this study, the optimum meridian profile of tandem impeller and conventional impeller are compared at same specific speed. The specific speed was 1000 in the previous optimum calculation. For various specific speed calculation, the meridian profile was optimized using the meridian profile calculation result that was already optimized at

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4

Feng, Luwen, Ziliang Li *, Yapeng Xue, and Yanhui Wu. "Investigation of a Highly Loaded Transonic Centrifugal Compressor Using an Advanced Design Method." In GPPS Xi'an21. GPPS, 2022. http://dx.doi.org/10.33737/gpps21-tc-172.

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A highly loaded transonic centrifugal compressor is aerodynamically designed and numerically investigated. The objectives are to improve the compressor efficiency by using tandem impeller configuration and 3D free-formed blade design concepts. This approach has the potential to control both the transonic and distorted flows within impeller passages. The results suggest that employing the tandem impeller configuration can significantly improve the compressor efficiency by 1.4%. The efficiency gain is mainly contributed by the improved uniformity of the impeller discharge flow achieved when the

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5

Eldin, K. M. Saad. "Active Stabilization of Centrifugal Compressor Using Adjustable Geometry Impeller." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21736.

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Abstract Recent work has shown that variable impeller geometry of the centrifugal compression system can be actively stabilized against the instability known as surge, thereby realizing a significant gain in system mass flow rate. In this context, the paper presents an experimental study about the influence of the impeller blade configuration on the extension of the stabilized characteristic margin beyond the natural surge line and enlarge the usable compressor operating region. This method is estimated from the two major control methods which: surge avoidance control and surge suppression con

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6

Mohseni, Arman, Erik Goldhahn, Rene´ A. Van den Braembussche, and Joerg R. Seume. "Novel IGV Designs for Centrifugal Compressors and Their Interaction With the Impeller." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23048.

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In centrifugal compressors, variable inlet guide vanes (IGVs) are used to control the mass flow rate with negligible change in pressure ratio and shaft speed. The efficient operation of IGVs is limited to the range of aerodynamic stability of their vane profiles. Thin symmetric profiles, which are usually used, tend to exhibit flow separation already at low setting angles, resulting in a rapid decrease of the global efficiency. Three different guide vane profiles including a symmetric reference, a two-piece tandem profile with variable angle, and an s-cambered, together with two auxiliary prof

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7

Josuhn-Kadner, B., and B. Hoffmann. "Investigations on a Radial Compressor Tandem-Rotor Stage With Adjustable Geometry." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-218.

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A radial compressor stage has been investigated mainly experimentally for aerodynamic stage optimization. The rotor (πt = 3.9) consists of a profiled axial inducer and a conventionally designed radial impeller. Inducer and impeller can be locked at different circumferential positions relative to each other thus, forming a tandem wheel with adjustable geometry. Conventional and Laser-2-Focus system measurements for the tandem-rotor and the stage were performed at different operating points to study the influence of the circumferential clearance geometry between inducer and impeller with respect

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8

Josuhn-Kadner, Burkhard. "Flow Field and Performance of a Centrifugal Compressor Rotor With Tandem Blades of Adjustable Geometry." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-013.

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A centrifugal compressor stage has been investigated mainly experimentally for aerodynamic stage optimization. The rotor consists of a separate inducer with 14 blades and an impeller with 28 blades. Both rotor components can be locked with each other at different circumferential positions thus, forming either a conventional splitter blade rotor or a tandem bladed rotor of adjustable geometry. The influence of the tandem blade geometry on the rotor and stage characteristics is studied in detail. Laser-2-Focus-System measurements were performed at nine locations all over the rotor taking three d

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9

Matsushita, Naoki, Satoshi Watanabe, Kusuo Okuma, Tomomichi Hasui, and Akinori Furukawa. "Similarity Law of Air-Water Two-Phase Flow Performance of Centrifugal Pump." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37469.

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Air-water two-phase flow performance of conventional centrifugal pumps causes the impermissible head deterioration even at an inlet void fraction less than about 10%. A tandem arrangement of double rotating cascades and higher blade outlet angle more than 90° only in outer rotating cascade has been proposed as a centrifugal pump impeller with high performance in air-water two-phase flow condition. To obtain further improvement of pump performances, a diffuser cascade is installed downstream of impeller outlet. In design of air-water two-phase flow centrifugal pump in various size and operating

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10

Matsushita, Naoki, Akinori Furukawa, Kusuo Okuma, and Satoshi Watanabe. "Influences of Impeller Diameter and Diffuser Blades on Air-Water Two-Phase Flow Performance of Centrifugal Pump." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77388.

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A tandem arrangement of double rotating cascades and single diffuser cascade, proposed as a centrifugal pump with high performance in air-water two-phase flow condition, yields lower head due to the smallness of the impeller outlet in comparison with a impeller with large outlet diameter and no diffuser. Influences of impeller diameter change and installation of diffuser blades on two-phase flow performance were experimentally investigated under the case of the same volute casing. As the result, the similarity law of the diameter of impeller having the similar blade geometry and the rotational

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