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Relevant bibliographies by topics / Low specific speed pump

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Academic literature on the topic 'Low specific speed pump'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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Journal articles on the topic "Low specific speed pump"

1

Choi, Young-Do, Junichi Kurokawa, and Jun Matsui. "Performance and Internal Flow Characteristics of a Very Low Specific Speed Centrifugal Pump." Journal of Fluids Engineering 128, no. 2 (2005): 341–49. http://dx.doi.org/10.1115/1.2169815.

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In very low specific speed range (ns<0.25), the efficiency of the centrifugal pump designed by the conventional method becomes remarkably low. Therefore, positive-displacement pumps have been widely used for long. However, the positive-displacement pumps remain associated with problems such as noise and vibration and they require high manufacturing precision. Since the recently used centrifugal pumps are becoming higher in rotational speed and smaller in size, there appear to be many expectations to develop a new centrifugal pump with high performance in the very low specific speed range. T

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Klas, R., F. Pochylý, and P. Rudolf. "Analysis of novel low specific speed pump designs." IOP Conference Series: Earth and Environmental Science 22, no. 1 (2014): 012010. http://dx.doi.org/10.1088/1755-1315/22/1/012010.

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Chabannes, Lilian, David Štefan, and Pavel Rudolf. "Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump." Energies 14, no. 13 (2021): 3785. http://dx.doi.org/10.3390/en14133785.

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The usage of splitter blades to enhance the performances of low specific speed pumps is common practice. Based on experimental and numerical studies, the influence of the addition of one and two splitter blades is investigated on a very low specific speed pump to assess their impact not only on the performance characteristics but also on the losses in all pump domains. First, the main characteristic curves are discussed and it is shown that the usage of splitter blades enhances the head of the pump while not impairing its efficiency. Secondly, a detailed analysis of the losses in the pump reve

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Torabi, Rouhollah, and Seyyed Ahmad Nourbakhsh. "The Effect of Viscosity on Performance of a Low Specific Speed Centrifugal Pump." International Journal of Rotating Machinery 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/3878357.

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Centrifugal pump delivery head and flow rate drop effectively during the pumping of viscous fluids. Several methods and correlations have been developed to predict reduction rate in centrifugal pump performance when handling viscous fluids, but their results are not in very good agreement with each other. In this study, a common industrial low specific speed pump, which is extensively used in different applications, is studied. The entire pump, including impeller, volute, pipes, front and rear sidewall gaps, and balance holes, is simulated in Computational Fluid Dynamics and 3D full Navier Sto

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Fu, Qiang, Shou Qi Yuan, and Rong Sheng Zhu. "Pressure Fluctuation of the Low Specific Speed Centrifugal Pump." Applied Mechanics and Materials 152-154 (January 2012): 935–39. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.935.

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In order to study the rules of pressure fluctuation and the radial force under different positions in a centrifugal pump with low specific speed, and to find the relationship between each other, the three-dimensional ,unsteady Reynolds-averaged Navier-stokes equations with shear stress transport turbulent models were solved. The pressure fluctuation was obtained. The results showed that the pressure fluctuations were visible. The pressure fluctuations in the volute were relatively low at the design flow rate condition. The blade passing frequency dominates the pressure fluctuations, high frequ

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MATSUI, Jun, Junichi KUROKAWA, Manabu HARA, Koji NAKAMURA, and Hiroshi IMAMURA. "PTV on Volute Pump of Very Low Specific-Speed." Proceedings of the JSME annual meeting 2000.4 (2000): 37–38. http://dx.doi.org/10.1299/jsmemecjo.2000.4.0_37.

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Zhao, A., P. Wu, D. Z. Wu, and L. Q. Wang. "The optimization of a low specific speed pipeline pump." IOP Conference Series: Materials Science and Engineering 52, no. 3 (2013): 032002. http://dx.doi.org/10.1088/1757-899x/52/3/032002.

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KAGAWA, Shusaku, Jun MATSUI, Junichi KUROKAWA, and Young-Do CHOI. "Loss Analysis of Very Low Specific Speed Centrifugal Pump." Transactions of the Japan Society of Mechanical Engineers Series B 73, no. 725 (2007): 219–24. http://dx.doi.org/10.1299/kikaib.73.219.

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Jafarzadeh, B., A. Hajari, M. M. Alishahi, and M. H. Akbari. "The flow simulation of a low-specific-speed high-speed centrifugal pump." Applied Mathematical Modelling 35, no. 1 (2011): 242–49. http://dx.doi.org/10.1016/j.apm.2010.05.021.

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Wang, Chun Lin, Chang Jun Li, Jian Ding, and Dong Liu. "Circulation Distribution of High Specific Speed Mixed-Flow Pump." Applied Mechanics and Materials 130-134 (October 2011): 1982–85. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.1982.

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The load distribution of the impeller and the shape of blade bone surface as well as the pump performance are determined by the circulation distribution from the impeller inlet to the outlet. However, perfect conclusions about optimal forms of the circulation distribution have not been seen yet. In this paper, three kinds of circulation distributions were studied. Three mixed flow pump impellers with high specific speed were designed according to the circulation distributions, and the models of the three pumps were built and modeled in the commercial CFD code ANSYS-CFX 11.0. The flow field in

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Dissertations / Theses on the topic "Low specific speed pump"

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Wettermark, Susan Daly. "Modeling flow characteristics of a low specific-speed centrifugal pump with different volute shapes." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/128340.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, June, 2019<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (page 39).<br>A centrifugal pump is typically designed for a specific operating condition. The pump's shape and size are fine-tuned so that it can produce a specified output pressure and flow rate at the maximum possible efficiency. When a pump begins operating of

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Sandler, Scott B. (Scott Bradley). "Experimental determination of volute effects on the stability of low specific speed centrifugal pumps." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/42539.

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Limbach, Phillip [Verfasser]. "Numerical 3D simulation of unsteady cavitating flow in low specific speed centrifugal pumps and analysis of the NPSH characteristics and void structures / Phillip Limbach." Aachen : Shaker, 2019. http://d-nb.info/1188551779/34.

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Moravec, Prokop. "Shape Optimization of the Hydraulic Machine Flow Passages." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-433572.

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Kaupert, Kevin A. "Unsteady flow fields in a high specific speed centrifugal pump /." Zürich, 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=12068.

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Thornton, Warren Elliott. "A low specific speed, multistage, turbo-compressor for microturbine fuelling." Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/11930.

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Vine, Andrew. "The aerodynamic design and evaluation of a low specific speed turbo compressor." Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/11946.

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Miller, Annesley John. "The computer simulation of a low-speed, low specific performance, spark ignition, two-stroke cycle engine." Thesis, Queen's University Belfast, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357450.

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Myers, Breanna. "Effects of Ingesting Fat Free and Low Fat Chocolate Milk After Resistance Training on Exercise Performance." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3620.

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Collegiate athletes are always looking for ways to improve their performance. Resistance training has been incorporated into most collegiate athletic programs for this very reason. In order to improve strength, lean body mass, and exercise performance, resistance exercise and timely protein ingestion must be followed. Incorporating protein ingestion into a resistance training routine has been shown to improve net protein balance. Milk protein is gaining popularity as an ergogenic aid. There has been growing interest in the potential use of bovine milk (cow’s milk) as an exercise beverage, espe

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Holub, Jiří. "Rychloběžná vodní turbína." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230046.

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The aim of this thesis is to design a geometry of runner of high specific speed turbine which is supposed to provide the maximum flow rate of the turbine while achieving a relatively high hydraulic efficiency. New design is based on the analysis of the hydraulic characteristics of three previous design sof very hiát specific speed turbines. The actual hydraulic pdesign of the turbine runner is based on CFD computations. Special software tools like BladeGen and TurboGrid were used for petting up the geometry and mesh for the very first time at Kaplan Department of Fluid Engineering.

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Books on the topic "Low specific speed pump"

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Sandler, Scott B. Experimental determination of volute effects on the stability of low specific speed centrifugal pumps. Gas Turbine Laboratory, Massachusetts Institute of Technology, 1992.

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Center, Lewis Research, ed. Hydrogen test of a small, low specific speed centrifugal pump stage. National Aeronautics and Space Administration, Lewis Research Center, 1991.

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Miller, Annesley John. The computer simulation of a low speed, low specific performance, spark ignition, two-stroke cycle engine. 1986.

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Book chapters on the topic "Low specific speed pump"

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Guo, Pengcheng, Xingqi Luo, Jinglin Lu, and Xiaobo Zheng. "Numerical Investigation on Impeller-Volute Interaction In a Low Specific Speed Centrifugal Pump with Tongue Profile Variation." In Fluid Machinery and Fluid Mechanics. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89749-1_48.

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Hati, Manas Kumar, and Tarun Kanti Bhattacharyya. "A High Speed, Low Jitter and Fast Acquisition CMOS Phase Frequency Detector for Charge Pump PLL." In Progress in VLSI Design and Test. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31494-0_19.

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Liu, Xudong, Pengjie Li, Peipei Dong, Guoqiang Xu, and Minghui Wang. "Low-speed Sensorless Control Method of SPMSM for Oil Pump Based on Improved Pulsating High-Frequency Voltage Injection." In The Proceedings of the 9th Frontier Academic Forum of Electrical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6609-1_63.

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Ali, Sanzida Tasmin, Pallabi Borah, and Sadhan Mahapatra. "Site-Specific Design Optimization of Wind Turbines at Low Wind Speed Sites of North-East India." In Advances in Sustainability Science and Technology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8700-9_17.

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Chatterjee, Krishnendu, Amir Kafshdar Goharshady, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis. "Optimal and Perfectly Parallel Algorithms for On-demand Data-Flow Analysis." In Programming Languages and Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44914-8_5.

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AbstractInterprocedural data-flow analyses form an expressive and useful paradigm of numerous static analysis applications, such as live variables analysis, alias analysis and null pointers analysis. The most widely-used framework for interprocedural data-flow analysis is IFDS, which encompasses distributive data-flow functions over a finite domain. On-demand data-flow analyses restrict the focus of the analysis on specific program locations and data facts. This setting provides a natural split between (i) an offline (or preprocessing) phase, where the program is partially analyzed and analysis summaries are created, and (ii) an online (or query) phase, where analysis queries arrive on demand and the summaries are used to speed up answering queries.In this work, we consider on-demand IFDS analyses where the queries concern program locations of the same procedure (aka same-context queries). We exploit the fact that flow graphs of programs have low treewidth to develop faster algorithms that are space and time optimal for many common data-flow analyses, in both the preprocessing and the query phase. We also use treewidth to develop query solutions that are embarrassingly parallelizable, i.e. the total work for answering each query is split to a number of threads such that each thread performs only a constant amount of work. Finally, we implement a static analyzer based on our algorithms, and perform a series of on-demand analysis experiments on standard benchmarks. Our experimental results show a drastic speed-up of the queries after only a lightweight preprocessing phase, which significantly outperforms existing techniques.

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Pelegrí, Marc, Jordi Armengol, Josep González, Toni Pujol, Lino Montoro, and Pere Tubert. "Evaluation of the front leakage flow in a low-specific-speed centrifugal pump." In Environmental Hydraulics - Theoretical, Experimental and Computational Solutions. CRC Press, 2009. http://dx.doi.org/10.1201/b10999-68.

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Arjeneh, M., K. R. Pullen, and S. Etemad. "Experimental study of radial low specific speed turbocompressor running in reverse as turboexpander." In 8th International Conference on Compressors and their Systems. Elsevier, 2013. http://dx.doi.org/10.1533/9781782421702.9.511.

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Perry, Steven F., Markus Lambertz, and Anke Schmitz. "Respiratory faculties of amphibious and terrestrial craniotes." In Respiratory Biology of Animals. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199238460.003.0012.

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This chapter introduces the ‘who has what’ in terms of air-breathing respiratory faculties for craniotes. Air breathing has arisen independently dozens of times among ray-finned fishes, but none has become completely terrestrial. The lobe-finned fishes eventually gave rise to amphibians and amniotes, and we see an increased importance of primarily lung-based air breathing. A muscular mechanism for lung ventilation (a buccal pump in amphibians and primarily a negative pressure aspiration mechanism in amniotes), pulmonary veins that return oxygenated blood to the heart, and some mechanism for partial or complete separation of oxygenated and deoxygenated blood masses at the heart are seen. Each major tetrapod group, in fact, has its own specific breathing mechanism. The chapter examines in some detail low-performance and high-performance faculties, the latter being particularly realized in the diaphragm-powered, ventilated pool system of the mammalian bronchoalveolar lung, and in the cross-current system of the avian lung–air sac system.

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Jaglan, Naveen, Samir Dev Gupta, Binod Kumar Kanaujia, and Shweta Srivastava. "Developments in Efficient Antenna Designs Using EBG Structures." In Advances in Wireless Technologies and Telecommunication. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0773-4.ch002.

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Since 2002, when the Federal Communication Commission (FCC) released the bandwidth 3.1-10.6 GHz, there has been increasing interest in the use of UWB systems because of their low power consumption, low cost, precise positioning and promising candidate for short-range high-speed indoor data communications. Planar circular monopoles like designs are a good example for UWB applications due to their merits such as ease of fabrication, Acceptable radiation pattern, and large impedance bandwidth. However, some narrowband systems also operate in this frequency like WiMAX, WLAN and X-Band satellite downlink communication band etc. cause interference in UWB range. To overcome any interference with these systems it is desirable to design UWB antenna with band notches. However, most techniques of obtaining notches uses antenna design specific approaches therefore EBG structures can be used to obtain single and multi-notch antennas. The technique used for obtaining notches using EBG is antenna design independent and can be applied to most of the antennas without compromising antenna performance.

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Ye, X. W., T. Jin, and P. Y. Chen. "Application of Computer Vision Technology to Structural Health Monitoring of Engineering Structures." In Optoelectronics in Machine Vision-Based Theories and Applications. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5751-7.ch009.

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The computer vision technology has gained great advances and applied in a variety of industry fields. It has some unique advantages over the traditional technologies such as high speed, high accuracy, low noise, anti-electromagnetic interference, etc. In the last decade, the technology of computer vision has been widely employed in the field of structure health monitoring (SHM). Many specific hardware and algorithms have been developed to meet different kinds of monitoring demands. This chapter presents three application scenarios of computer vision technology for health monitoring of engineering structures, including bridge inspection and evaluation with unmanned aerial vehicle (UAV), recognition and surveillance of foreign object intrusion for railway system, and identification and tracking of concrete cracking. The principles and procedures of three application scenarios are addressed following with the experimental study, and the possibilities and ideas for the application of computer vision technology to other monitoring items are also discussed.

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Conference papers on the topic "Low specific speed pump"

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Kagawa, Shusaku, and Junichi Kurokawa. "New Centrifugal Pump in Very Low Specific Speed Range." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06018.

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In the range of very low specific speed, such as ns < 80 [min.−1, m3/min., m], or Ns < 533 [min.−1, USGPM, ft.], stable head-capacity curve is one of the most important issues. The head-capacity curve of a conventional closed impeller tends to be unstable with a positive slope characteristic in such a very low ns range. To solve this problem, a new type of centrifugal pump “J-groove pump” is proposed and tested in this study. The J-groove pump is composed of a rotating disk mounted with many shallow radial grooves and a circular casing. The experimental results reveal that the proposed J

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Shi, Wei-dong, Fei Long, Yue Li, Hong-fei Leng, and Ping-ping Zou. "Non-Overload Design of Low Specific Speed Submersible Pump." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30368.

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Based on the design of low specific speed submersible pump, the influence of impeller geometrical parameter on shaft power of pump is analyzed in this paper. Under the condition of the maximum value of shaft power being no more than the input power of matching electromotor, the method of reducing the maximum value of pump power is researched further in order to reduce the power of the matching electromotor. Then the design correlation formula of the geometrical parameters of impeller is presented. The value of shaft power was predicted by the software FLUENT. The results show that the ratio of

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Al-badawi, Muhamed, I. G. Adam, Sherif Haddara, and Ahmed H. M. El Sherif. "Influence of Blade Shape Geometry on Very Low Specific Speed Centrifugal Pump Performance." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87119.

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Direct or inverse design methods for centrifugal pumps play an important role in investigating their performance. In this paper, a very low specific speed centrifugal pump impeller of ns = 9.5 (metric), three blades and 222° wrap angle. This pump was investigated using the direct design method to achieve the blade shape geometry and examine the blade angle distribution. As the blade angle progression affects the pump performance, four models with different blade angle distribution were used to perform the hydrodynamic and suction performance of the pump. The linear and non-linear derived corre

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Zhang, Jinfeng, Ye Yuan, Shouqi Yuan, Weigang Lu, and Jianping Yuan. "Experimental Studies on the Optimization Design of a Low Specific Speed Centrifugal Pump." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-22005.

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For a low specific speed centrifugal pump with the requirement of high efficiency of 68% and non-overload power characteristics, series experimental studies, by matching 9 volutes with 19 impellers were done. By combining the former research results about the splitters and the non-overload theory in centrifugal pump, the theoretical conditions to achieve the property of non-overload in a centrifugal pump with splitters was analyzed, and formulas to estimate the maximum shaft power and its position are derived. Based on the requirement of high efficiency and non-overload, blade outlet angle β2,

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Zhang, Ning, Minguan Yang, Bo Gao, Zhong Li, and Dan Ni. "Investigation on Rotor-Stator Interaction in a Low Specific Speed Centrifugal Pump." In ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/ajkfluids2015-33495.

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In centrifugal pump, due to intense rotor-stator interaction, high amplitude pressure pulsating would be induced, and it has a crucial influence on the stable operating of the pump. In this paper, a low specific speed centrifugal pump is investigated to illustrate unsteady flow within the centrifugal pump. Pressure pulsation signals are attained by mounting 20 monitoring points along the spiral volute, covering all the interested region of the model pump. FFT (Fast Fourier Transform algorithm) is applied to analyze the time-domain pressure signals. Results show that in pressure spectra, eviden

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Lu, Chang-Shen, Zheng-Gui Li, Xin-rui Li, et al. "Numerical Analysis of Cavitation Flow in Low Specific Speed Condensate Pump Impeller." In 2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia). IEEE, 2019. http://dx.doi.org/10.1109/isgt-asia.2019.8881723.

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Vermunt, E. M. A., K. A. J. Bruurs, M. S. van der Schoot, and B. P. M. van Esch. "Part Load Instability and Rotating Stall in a Multistage Low Specific Speed Pump." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20086.

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Abstract A new diffuser design is developed for a low specific speed, multistage pump. In this design the diffuser and the de-swirl vanes are integrated into single vanes. This creates diffuser channels that extend from behind the impeller exit through the cross-over, up to the eye of the next stage impeller. Experiments show the occurrence of a saddle type instability in the head curve. At a critical flow rate of close to 50% of the flow rate at Best Efficiency Point (BEP), the head drops by 7% of the head at BEP. In this study Computational Fluid Dynamics (CFD) are used in an effort to under

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Boncinelli, Paolo, Roberto Biagi, Antonio Focacci, et al. "Bowl-Type Diffusers for Low Specific-Speed Pumps: An Industrial Application." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95248.

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In this paper, the aerodynamic design of a bowl–type diffuser for a low specific–speed pump is presented and described in detail. The main goal was to achieve an optimal configuration in terms of diffuser recovery capacity and stage aerodynamic efficiency, while satisfying severe constraints concerning stage size and multistage feasibility. Both geometrical parametrization tools and a fully–viscous three–dimensional numerical solver were exploited in the design process. The geometrical parameterization allowed one to control and modify the geometry of the component by changing a limited number

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Busby, Judy, Bill Batton, Raymond Furst, and Ashvin Hosangadi. "High Suction Specific Speed LOX Pump: Design, Analysis and Testing." In 44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-4947.

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van der Schoot, Martijn, Kevin Bruurs, and Eric van der Zijden. "CFD-Based Hydraulic Design and Manufacturing of a Multistage Low Specific-Speed Diffuser Pump." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5661.

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Abstract A multistage low specific-speed diffuser pump was designed to achieve very good hydraulic performance with a newly designed integrated diffuser, crossover and return guide vane. The diffuser was designed using a continuous crossover design. The design space of this diffuser was limited because of the usage of a mechanical pump design from a similar existing pump. This paper presents the simulation-based design of this new pump and the role that simulation can play in the manufacturing process. A new diffuser has been designed to obtain optimum efficiency and to ensure that the pump wi

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Reports on the topic "Low specific speed pump"

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Adsit, Sarah E., Theodora Konstantinou, Konstantina Gkritza, and Jon D. Fricker. Public Acceptance of INDOT’s Traffic Engineering Treatments and Services. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317280.

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As a public agency, interacting with and understanding the public’s perspective regarding agency activities is an important endeavor for the Indiana Department of Transportation (INDOT). Although INDOT conducts a biennial customer satisfaction survey, it is occasionally necessary to capture public perception regarding more specific aspects of INDOT’s activities. In particular, INDOT needs an effective way to measure and track public opinions and awareness or understanding of a select set of its traffic engineering practices. To evaluate public acceptance of specific INDOT traffic engineering a

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