Готові списки джерел за темами / Inducer centrifugal stage

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Добірка наукової літератури з теми "Inducer centrifugal stage"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Inducer centrifugal stage"

Tkach, Pavlo, Andrii Yashchenko, Oleksandr Gusak, Sergey Khovanskyy, Vitalii Panchenko, and Iryna Grechka. "Improvement of cavitation erosion characteristics of the centrifugal inducer stage with the inducer bush." Eastern-European Journal of Enterprise Technologies 4, no. 8 (94) (2018): 24–31. http://dx.doi.org/10.15587/1729-4061.2018.139392.

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Rodgers, C. "Centrifugal Compressor Inlet Guide Vanes for Increased Surge Margin." Journal of Turbomachinery 113, no. 4 (1991): 696–702. http://dx.doi.org/10.1115/1.2929136.

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Анотація:

This paper describes the results of compressor rig testing with a moderately high specific speed, high inducer Mack number, single-stage centrifugal compressor, with a vaned diffuser, and adjustable inlet guide vanes (IGVs). The results showed that the high-speed surge margin was considerably extended by the regulation of the IGVs, even though the vaned diffuser was apparently operating stalled. Simplified one-dimensional analysis of the impeller and diffuser performances indicated that at inducer tip Mach numbers approaching and exceeding unity, the high-speed surge line was triggered by indu

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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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Анотація:

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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Palmer, D. L., and W. F. Waterman. "Design and Development of an Advanced Two-Stage Centrifugal Compressor." Journal of Turbomachinery 117, no. 2 (1995): 205–12. http://dx.doi.org/10.1115/1.2835648.

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Анотація:

This paper describes the aeromechanical design and development of a 3.3 kg/s (7.3 lb/sec), 14:1 pressure ratio two-stage centrifugal compressor, which is used in the T800-LHT-800 helicopter engine. The design employs highly nonradial, splitter bladed impellers with swept leading edges and compact vaned diffusers to achieve high performance in a small and robust configuration. The development effort quantified the effects of impeller diffusion and passive inducer shroud bleed on surge margin as well as the effects of impeller loading on tip clearance sensitivity and the impact of sand erosion a

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Shamsuddeen, Mohamed Murshid, Sang-Bum Ma, Sung Kim, et al. "Effect of an Inducer-Type Guide Vane on Hydraulic Losses at the Inter-Stage Flow Passage of a Multistage Centrifugal Pump." Processes 9, no. 3 (2021): 526. http://dx.doi.org/10.3390/pr9030526.

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Анотація:

A multistage centrifugal pump was developed for high head and high flow rate applications. A double-suction impeller and a twin-volute were installed at the first stage followed by an impeller, diffuser and return vanes for the next four stages. An initial design feasibility study was conducted using three-dimensional computational fluid dynamics tools to study the performance and the hydraulic losses associated with the design. Substantial losses in head and efficiency were observed at the interface between the first stage volute and the second stage impeller. An inducer-type guide vane (ITGV

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Koyyalamudi, V. V. N. K. Satish, and Quamber H. Nagpurwala. "Stall Margin Improvement in a Centrifugal Compressor through Inducer Casing Treatment." International Journal of Rotating Machinery 2016 (2016): 1–19. http://dx.doi.org/10.1155/2016/2371524.

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Анотація:

The increasing trend of high stage pressure ratio with increased aerodynamic loading has led to reduction in stable operating range of centrifugal compressors with stall and surge initiating at relatively higher mass flow rates. The casing treatment technique of stall control is found to be effective in axial compressors, but very limited research work is published on the application of this technique in centrifugal compressors. Present research was aimed to investigate the effect of casing treatment on the performance and stall margin of a high speed, 4 : 1 pressure ratio centrifugal compress

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Xu, Zhenfa, Fanyu Kong, Hongli Zhang, Kun Zhang, Jiaqiong Wang, and Ning Qiu. "Research on Visualization of Inducer Cavitation of High-Speed Centrifugal Pump in Low Flow Conditions." Journal of Marine Science and Engineering 9, no. 11 (2021): 1240. http://dx.doi.org/10.3390/jmse9111240.

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Анотація:

Inducer is often used to improve the cavitation performance of pump. In order to study the cavitation characteristics of inducer under low flow condition of high-speed pump, high-speed photography technology was employed in this paper to carry out visual experiments on the inducer of a high-speed centrifugal pump. In low flow rates, Cavitation distribution and evolution among the inducer were captured. The experimental results revealed that a band-shaped backflow vortex in the inlet pipe would occur when the flow rate was less than 0.3 Qd. Moreover, the backflow vortex in the inlet pipe rotate

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Tkach, P. Y. "Influence of Geometric Parameters of Inducer Bush Design on Cavitation Erosion Characteristics of Centrifugal Inducer Stage of Pump." IOP Conference Series: Materials Science and Engineering 233 (August 2017): 012012. http://dx.doi.org/10.1088/1757-899x/233/1/012012.

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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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Анотація:

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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Kostornoi, Oleksandr, Valentyna Kucenko, Michail Laktionov, Pavlo Tkach, Nataliia Pidopryhora, and Тetiana Makhanova. "Experience in Selection of Cavitation-Resistant Steels for Inducers of Centrifugal Pumps of JSC "VNIIAEN" Specialization." Mechanics and Advanced Technologies 5, no. 1 (2021): 41–48. http://dx.doi.org/10.20535/2521-1943.2021.5.1.228965.

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Анотація:

To formulate the problems of increasing the resistance to cavitation erosion of the hydraulic parts of centrifugal pumps by selecting the most suitable steel grades and to review the experience of using cavitation-resistant steels for inducers of centrifugal pumps of JSC “VNIIAEN” specialization. Analytical and statistical analyses were carried out using research and experimental development data of cavitation-resistant steels for inducers of centrifugal pumps at JSC "VNIIAEN", as well as using data from open access publications. The article deals with the problem of centrifugal pump hydraulic

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Більше джерел

Дисертації з теми "Inducer centrifugal stage"

Ткач, П. Ю. "Вплив надроторних елементів шнеку на кавітаційно-ерозійні якості шнекововідцентрового ступеня насоса". Thesis, Науково-дослідний і проектно-конструкторський інститут атомного та енергетичного насособудування, 2018. http://essuir.sumdu.edu.ua/handle/123456789/70557.

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Анотація:

У дисертаційній роботі вирішена актуальна науково-технічна задача – підвищення кавітаційно-ерозійних якостей шнекововідцентрового ступеня за допомогою надроторних елементів шнеку. Наведено результати дослідження робочого процесу шнекововідцентрового ступеня з надроторними елементами, а також визначено вплив їх геометричних параметрів на кавітаційно-ерозійні якості досліджуваного ступеня. Запропоновано фізичну модель течії у каналах шнекововідцентрового ступеня з надроторними елементами на режимі недовантаження. Основним змістом роботи є отримання експериментальним шляхом оптимальних геометричн

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Частини книг з теми "Inducer centrifugal stage"

Ng C.W.W., Lee C.J., Xu G.M., and Zhou X.W. "Novel centrifuge simulations of restoration of building tilt." In Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2005. https://doi.org/10.3233/978-1-61499-656-9-1529.

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Анотація:

It is not unusual to observe inclination of buildings and towers as a result of unwanted differential foundation settlements. Over the years, a number of different engineering solutions including the method of soil extraction have been attempted to reduce unexpected inclination of buildings and towers. By using a state-of-the-art robotic manipulator, a series of novel centrifuge model tests conducted to investigate key factors which govern the restoration of building tilts are described and reported. In the centrifuge simulation tests, the robotic manipulator was used to core and extract soil

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Kokkali Panagiota, Tessari Anthony, and Abdoun Tarek. "Centrifuge Modeling of Downdrag Induced Bending Moments on Batter Piles." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-2311.

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Анотація:

Pile-founded floodwalls are commonly used in the New Orleans area to protect low-lying areas from flooding. They are usually referred to as T-walls due to their inverted &ldquo;T&rdquo; shape. The T-walls consist of reinforced concrete and are supported by long batter piles. They are relatively expensive compared to earthen levees, however, they are extremely robust and their small footprint is very advantageous. Since the soils in Southern Louisiana contain soft and compressible silt and clay these floodwalls need to be designed to resist not only the flood loads, but also the bending

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Malvick E.J., Kutter B.L., Boulanger R.W., Kabasawa K., and Kokusho T. "Void redistribution research with 1-g and centrifuge modeling." In Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering. IOS Press, 2005. https://doi.org/10.3233/978-1-61499-656-9-2543.

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A U.S.-Japan cooperative research project enabled researchers from Chuo University in Tokyo and University of California in Davis to collaborate on a project studying the effects of void redistribution and water film formation on shear deformations due to liquefaction in layered soils. It has been shown that softening associated with void redistribution can contribute to liquefaction-induced lateral spreading and flow slides. Examples are presented of 1-g model tests at Chuo University and centrifuge tests at UC Davis. Common findings are summarized and differences are discussed. The key impli

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Тези доповідей конференцій з теми "Inducer centrifugal stage"

Grigorescu, Ioana C., and Gladys Navas. "Damage Mechanisms in Multistage Pumps for Water Injection." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01676.

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Abstract A detailed surface evaluation was performed for the components of two multistage centrifugal pumps for water injection in a Venezuelan oil production field. Several non-destructive methods were employed: visual inspection, die penetrant and replica extraction, followed by micro-morphological and chemical analysis by scanning electron microscopy (SEM) and energy dispersive X ray spectroscopy (EDX). The flow-induced degradation mechanisms varied depending on the pump component and their ranking, according to damage intensity, from high to low, was: i) severe erosion-corrosion in the bal

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Rodgers, C. "The Centrifugal Compressor Inducer." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-032.

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Анотація:

The function of the centrifugal compressor inducer is to provide wide flow margins from the design flow to the stall and choke flow limits, together with high static pressure recovery. At transonic conditions the inducer becomes the critical to impeller performance in that shock losses and blockage growth diminish stable flow range and may trigger near vertical stage characteristics. The paper covers the various types of inlet configurations upstream of the inducer, followed by a review of the state-of-art inducer design for centrifugal compressors, culminating with some research developments

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Rodgers, C. "The Efficiencies of Single-Stage Centrifugal Compressors for Aircraft Applications." In ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/91-gt-077.

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Анотація:

The thrust of most recent advances in single– and two–stage centrifugal compressor technology by the aerospace community has been motivated by interest in increasing airbreathing propulsion system power density, and improving specific fuel consumption with higher stage pressure ratios. Advances in the last decade have made it appropriate to review the major design parameters influencing the efficiency levels of single–stage centrifugal compressors for aircraft applications. A simple efficiency correlation was derived for advanced single–stage centrifugal compressors. It was based upon four cri

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Rodgers, C. "High Specific Speed, High Inducer Tip Mach Number, Centrifugal Compressor." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38949.

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Анотація:

The demand for more efficient turbocharger and aviation centrifugal compressors operating at higher pressure ratios and specific speeds with extended flow ranges is focusing research efforts on the inducer and diffuser transonic flow fields. At pressure ratios above 5.0 and specific speeds of unity inducer tip relative Mach numbers exceeding 1.4 can be encountered, precipitating both increased shock losses and diminished stall margin. The results of compressor rig testing on a research 6.8 inch tip (173mm) diameter single stage centrifugal compressor operating with inducer tip relative Mach nu

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Hazby, Hamid, Chris Robinson, Michael Casey, Daniel Rusch, and Rene Hunziker. "Free-Form Versus Ruled Inducer Design in a Transonic Centrifugal Impeller." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63538.

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Анотація:

The detailed design of the inducer of a high pressure ratio transonic radial compressor impeller with a design inlet tip relative Mach number of 1.4 is considered. Numerical analysis has been used to compare a datum impeller with ruled inducer design with a number of different free-form design concepts, generated following the same aerodynamic design philosophy. The datum stage and one with a free-form inducer, referred to as ‘barrelled forward swept’, with forward swept leading edge near the tip and increased chord at mid-span, have been manufactured and tested. The tests were performed with

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Palmer, D. L., and W. F. Waterman. "Design and Development of an Advanced Two-Stage Centrifugal Compressor." 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-202.

Повний текст джерела

Анотація:

This paper describes the aero-mechanical design and development of a 3.3 kg/sec (7.3 lb/sec), 14:1 pressure ratio two-stage centrifugal compressor which is used in the T800-LHT-800 helicopter engine. The design employs highly nonradial, splitter bladed impellers with swept leading edges and compact vaned diffusers to achieve high performance in a small and robust configuration. The development effort quantified the effects of impeller diffusion and passive inducer shroud bleed on surge margin as well as the effects of impeller loading on tip clearance sensitivity and the impact of sand erosion

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Chen, Hua. "Component Matching of Centrifugal Compressors for Turbocharger Application." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63108.

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Анотація:

Matching of various components (impeller exducer to impeller inducer, and vaneless diffuser and volute to the impeller) in a centrifugal compressor is critical for stage performance, but this is often neglected during compressor design and selection. This paper studies the importance of flow area matching for stage efficiency and how this matching process can be performed rapidly following a few simple principles. Methods for achieving optimum efficiency under different compressor operating conditions and size constraint are proposed and compared with experimental results. The purpose of this

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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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Анотація:

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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Lüdtke, Klaus. "Industrial Centrifugal Compressors: The Influence of the Impeller Diffusion on the Stage Performance." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-233.

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Анотація:

The meridional convergence of an unshrouded inducer type impeller with 30° backward leaning blades was modified by reducing the exit width by 22%. The vaneless diffuser was changed accordingly, whereas the impeller eye opening was kept constant. Performance curves show that the lower diffusion leads to enhanced surge limit, lower head at increased efficiency. Choke point remains unchanged and the extension of the rotating stall range is reduced. The range of tip speed Machnumbers tested was 0.6 to 1.17. Test value analysis, broken down into components, is based on the two-zone model impeller e

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Tamaki, Hideaki, and Satoshi Yamaguchi. "The Experimental Study of Matching Between Centrifugal Compressor Impellers and Vaneless Diffusers for Turbochargers." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28300.

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Анотація:

The operating range of centrifugal compressors for turbochargers using vaneless diffuser is considered from measurements of the separate pressure rise of the impeller and the diffuser. In some cases, the peak pressure rise of the stage corresponds to the peak pressure rise of the impeller (which is considered to correspond to inducer stall). From these measurements a new correlation for the onset of inducer stall is proposed. In other cases the stability of the vaneless diffuser (defined as positive slope of the pressure rise versus flow characteristic) determines the stability of the stage. A

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