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Journal articles on the topic 'Blade channel'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Tao, Ran, and Zhengwei Wang. "Comparative modeling and analysis of the flow asymmetricity in a centrifugal pump impeller at partial load." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 234, no. 2 (2019): 237–47. http://dx.doi.org/10.1177/0957650919851921.

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Undesirable flow regime occurs at partial-load conditions of the centrifugal pump. Flow separates at the leading edge and pulses in the blade channel with complex stall cell transfer law. The passing capability of the blade channel becomes important when rotating stall happens. In this study, the blade channel number influence on the flow stability in a centrifugal pump impeller was studied by unsteady flow simulations after numerical-experimental verification. The 5-, 6-, and 7-blade impellers were discussed under the same partial-load flow rate condition and the same rotating speed. Results

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2

Guo, Xinxin, Xueying Li, and Jing Ren. "Evolution of Rotating Internal Channel for Heat Transfer Enhancement in a Gas Turbine Blade." Aerospace 11, no. 10 (2024): 836. http://dx.doi.org/10.3390/aerospace11100836.

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To achieve higher thermal efficiency in a gas turbine, increasing the turbine inlet temperature is necessary. The rotor blade at the first stage tolerates the highest temperature, and the serpentine internal channel located in the middle chord of the rotor blade is vital in guaranteeing the blade’s service life. Therefore, it is essential to illustrate the evolution of the rotating internal channel in a gas turbine blade. In the paper, the influence of the Coriolis force, including its mechanisms, on the conventional rotating channel are reviewed and analyzed. A way to utilize the positive hea

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3

Zhuang, Haifei, Mingming Liu, and Tao Guo. "Modification and Optimization of Cylindrical Blade of Dredge Pump Based on CFD." Journal of Physics: Conference Series 2329, no. 1 (2022): 012004. http://dx.doi.org/10.1088/1742-6596/2329/1/012004.

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Abstract The 3500 m3/h series cutter suction dredger pump adopts cylindrical blade impeller with low efficiency and serious wear of impeller channel; The twisted blade is optimized by conformal transformation method, and the blade wrap angle is increased by 75°; The efficiency of dredge pump with twisted blades is increased by 9% compared with cylindrical blades when the flow is 8000-12000 m3/h; The relative velocity nephogram shows that the twisted blade eliminates the vortex in the impeller channel and improves the flow field; Through the erosion simulation analysis of solid-liquid two-phase

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4

Gribin, Vladimir, Ilya Gavrilov, Aleksandr Tishchenko, et al. "Features of liquid phase movement in the inter-blade channel of nozzle blade cascade." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 232, no. 5 (2017): 452–60. http://dx.doi.org/10.1177/0957650917730947.

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The experimental results of wet steam flow in the blade channel of flat nozzle blade cascade have been considered in the paper. The aim of this work is to study the motion of liquid droplets inside the inter-blade channel. Experimental studies were performed on installation circuit of wet steam. In order to obtain velocity fields of droplets in investigated channel, the laser diagnostics system was used. It carries out the cross-correlation method—particle tracking velocimetry. Numerical simulation of wet steam flow in studied channel was performed. According to the obtained data, the main fea

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5

Ben-Mansour, R., and L. Al-Hadhrami. "Effect of Reynolds Number and Property Variation on Fluid Flow and Heat Transfer in the Entrance Region of a Turbine Blade Internal-Cooling Channel." International Journal of Rotating Machinery 2005, no. 1 (2005): 36–44. http://dx.doi.org/10.1155/ijrm.2005.36.

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Internal cooling is one of the effective techniques to cool turbine blades from inside. This internal cooling is achieved by pumping a relatively cold fluid through the internal-cooling channels. These channels are fed through short channels placed at the root of the turbine blade, usually called entrance region channels. The entrance region at the root of the turbine blade usually has a different geometry than the internal-cooling channel of the blade. This study investigates numerically the fluid flow and heat transfer in one-pass smooth isothermally heated channel using the RNGk−εmodel. The

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6

Wang, Meng-Hui, Shiue-Der Lu, Cheng-Che Hsieh, and Chun-Chun Hung. "Fault Detection of Wind Turbine Blades Using Multi-Channel CNN." Sustainability 14, no. 3 (2022): 1781. http://dx.doi.org/10.3390/su14031781.

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This study utilized the multi-channel convolutional neural network (MCNN) and applied it to wind turbine blade and blade angle fault detection. The proposed approach automatically and effectively captures fault characteristics from the imported original vibration signals and identifies their state in multiple convolutional neural network (CNN) models. The result obtained from each model is sent to the output layer, which is a maximum output network (MAXNET), to compute the most accurate state. First, in terms of wind turbine blade state detection, this paper builds blade models based on the no

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7

Ke, Qidi, Lingfeng Tang, Wenbin Luo, and Jingzhe Cao. "Parameter Optimization of Centrifugal Pump Splitter Blades with Artificial Fish Swarm Algorithm." Water 15, no. 10 (2023): 1806. http://dx.doi.org/10.3390/w15101806.

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Low specific speed centrifugal pumps typically suffer from low efficiency and severe backflow; adding optimally structured splitter blades can play a role. In this paper, the distribution of pressure and velocity in the flow channel is analyzed using CFD simulation for a low specific speed centrifugal pump. The geometric parameters of the splitter blade are optimized using an orthogonal test and an artificial fish swarm algorithm; then the optimal splitter blade structure is obtained. Results showed that the splitter blade not only effectively solves the backflow of the flow channel and compre

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8

Zhang, Jinfeng, Guidong Li, Jieyun Mao, Shouqi Yuan, Yefei Qu, and Jing Jia. "Effects of the outlet position of splitter blade on the flow characteristics in low-specific-speed centrifugal pump." Advances in Mechanical Engineering 10, no. 7 (2018): 168781401878952. http://dx.doi.org/10.1177/1687814018789525.

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To elucidate the influences of the outlet position of splitter blades on the performance of a low-specific-speed centrifugal pump, two different splitter blade schemes were proposed: one located in the middle of the channel and the other having a deviation angle at the trailing edge of splitter blade toward the suction side of the main blade. Experiments on the model pump with different splitter blade schemes were conducted, and numerical simulations on internal flow characteristics in the impellers were studied by means of the shear stress transport k- ω turbulence model. The results suggest

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9

Zhao, Wenbin, Jianbin Hu, and Kai Wang. "Influence of Channel-Diffuser Blades on Energy Performance of a Three-Stage Centrifugal Pump." Symmetry 13, no. 2 (2021): 277. http://dx.doi.org/10.3390/sym13020277.

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In order to improve hydraulic efficiency, influence of inlet angle, outlet angle, wrap angle, inlet shape and outer edge camber lines of channel-diffuser blades on the energy performance of a three-stage centrifugal pump were studied and the pressure distributions on the blade of the first-stage channel-diffuser were particularly analyzed. The result shows that the efficiency of the pump is maximal when the blade inlet angle is 12°. The pressure variation in the model with the inlet angle of 12° was small and the amplitude of fluctuation was also not large. When the outlet angle was 90°, the p

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10

Khalatov, A. A., A. S. Kovalenko, and S. B. Reznik. "FEATURES OF ORGANIZATION OF FILM COOLING OF HIGH TEMPERATURE GAS TURBINES BLADES." Industrial Heat Engineering 39, no. 4 (2017): 11–20. http://dx.doi.org/10.31472/ihe.4.2017.02.

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The features of the release of the cooling air in the interscapular channel high temperature gas turbines at the film cooling are considered. Possibilities of its local distribution on contour of an entrance edge of the perforated blades are investigated. The presented calculations show that the substantial increase in the cooling efficiency can be attained due to channels of small dimension in the blade wall.

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11

Li, Zhehong, Wanmin Kong, Genqiang Shao, et al. "Investigation on Aerodynamic Performance of a Centrifugal Compressor with Leaned and Bowed 3D Blades." Processes 12, no. 5 (2024): 875. http://dx.doi.org/10.3390/pr12050875.

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The application of centrifugal compressors is extensive in industries such as aerospace and energy. The blade is the primary factor affecting the aerodynamic performance of compressors. In this paper, the aerodynamic performance of a centrifugal compressor with leaned and bowed 3D blades is investigated. The spanwise section profiles of the blade in the circumferential direction are deflected at different angles, resulting in four compressors with distinct leaned and bowed 3D blades based on the original model. There is a significant change in isentropic efficiency of the modified models under

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12

Zhang, Chuanhai, Baojie Liu, Ming Qiu, Zhuyu Jiang, and Yan Hao. "Experimental and Numerical Research on End-Wall Flow Mechanism of High-Loading Tandem Stators." Applied Sciences 15, no. 3 (2025): 1014. https://doi.org/10.3390/app15031014.

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Tandem blades have been recognized for their potential to enhance the loading capacity of compressors. However, tandem stators currently do not exhibit advantages due to insufficient understanding of the complex end-wall flow mechanisms. To address this, an extensive study was conducted on tandem stators using experimental and numerical methods. The analysis focused on loss development, three-dimensional flow structures, and interaction mechanisms between front and rear blades. The results indicated the following: (1) The rear blade’s influence on the front blade has contrasting effects in mid

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13

Shi, Lijian, Changxin Wu, Li Wang, et al. "Influence of Blade Angle Deviation on the Hydraulic Performance and Structural Characteristics of S-Type Front Shaft Extension Tubular Pump Device." Processes 10, no. 2 (2022): 328. http://dx.doi.org/10.3390/pr10020328.

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When the axial-flow pump is running, the blade angle is not fully adjusted or there are errors in the manufacture of the blades, which will lead to inconsistent blade placement angles during operation, and which will reduce the efficiency of the axial-flow pump. This paper uses the research methods of numerical simulation and model experiments to analyze the hydraulic performance and impeller structure characteristics of each flow components under different schemes when the angles of each blade of the S-type front shaft extension tubular pump device are inconsistent. The research phenomenon is

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14

Wang, Peng, Xinyu Zhu, and Yi Li. "Analysis of Flow and Wear Characteristics of Solid–Liquid Two-Phase Flow in Rotating Flow Channel." Processes 8, no. 11 (2020): 1512. http://dx.doi.org/10.3390/pr8111512.

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To study the flow characteristics and the wear distribution of pumps at different rotation speeds, a rotating disc with three blades was designed for experiments. Numerical simulations were conducted using a computational fluid dynamics-discrete phase model (CFD–DPM) approach. The experimental and numerical results were compared, and the flow characteristics and wear behaviors were determined. As the speed increased, the particles at the blade working surface aggregated. The particle velocity gradually increased at the outlet of the channel. The severe wear areas were all located in the outlet

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15

Luxa, Martin. "The Sonic Surface in the Inter-Blade Channel of the Last Stage Rotor Wheel in the Steam Turbine of Large Output." MATEC Web of Conferences 168 (2018): 02006. http://dx.doi.org/10.1051/matecconf/201816802006.

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The paper deals with sonic surface in a modern turbine wheel consisting of non-prismatic ultra long blades. The whole inter-blade channel is choked. Different positions and shapes of the sonic line in particular cross-sections along the span are observed. The sensitivity of sonic line formation to small changes of effective shape of the inter-blade channel in the root section and the influence of inlet angle, stagger angle and pitch/chord ratio in the tip section are discussed. The problematic of sonic line development in the case of supersonic inlet flow filed is also described. The presented

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16

Pin, Yan, Xiaoyuan Wen, Xiaodan Hu, et al. "Investigation of enhanced heat transfer in hollow blade by diamond-inspired structure for dehumidification in steam turbine." Thermal Science, no. 00 (2024): 265. https://doi.org/10.2298/tsci240812265p.

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Wet steam erosion plays a pivotal role in influencing the efficient and safe operation of steam turbines. The dehumidification technique, which combines hollow blade heating and purging, exhibits significant performance in the low-pressure, long-blade stages. However, the hollow structure has a pronounced impact on blade strength and often results in low heat transfer efficiency. In this study, we introduce a turbulence generator inspired by the diamond lattice bonding to modify the internal channel structure of hollow long blades. This diamond-inspired structure aims to enhance turbulence wit

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17

Zhang, Bo, Quan Hong, Yuanyuan Dou, Honghu Ji, and Rui Chen. "Experimental investigation of flow and heat transfer characteristics on matrix ribbed channel." Thermal Science 24, no. 3 Part A (2020): 1593–600. http://dx.doi.org/10.2298/tsci190702026z.

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The effect of the rib width to height ratio t/e and width to pitch ratio t/p on the local heat transfer distribution in a rectangular matrix ribbed channel with two opposite in line 45? ribs are experimentally investigated for Reynolds numbers from 54000 to 150000. The rib height to channel height ratio e/H is 0.5, t/p and t/e both varies in range of 0.3-0.5. To simulate the actually situation in turbine blades, and provide useful direct results for turbine blade designers, the parameters are same with the blade. The experiments results show that, in comparison to fully developed flow in a smo

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18

Miyauchi, Sunao, Hironori Horiguchi, Jun-ichirou Fukutomi, and Akihiro Takahashi. "Optimization of Meridional Flow Channel Design of Pump Impeller." International Journal of Rotating Machinery 10, no. 2 (2004): 115–19. http://dx.doi.org/10.1155/s1023621x04000120.

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The meridional flow channel design of a pump impeller affects its performance. However, since so many design parameters exist, a new design method is proposed in which a meridional and blade-to-blade flow channel is designed by the parallel use of the circulation distribution provided by the designer. Thus, an optimization method was used to design an axis-symmetrical meridional flow channel from the circulation distribution. In addition, the inverse design method proposed by Zangeneh et al. (1996) was employed to design a three-dimensional blade-to-blade flow channel from the circulation dist

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19

Суббота, Анатолий Максимович, та Виталий Георгиевич Джулгаков. "ПОВЫШЕНИЕ ЭФФЕКТИВНОСТИ ВЕТРОЭНЕРГЕТИЧЕСКОЙ УСТАНОВКИ С ВЕРТИКАЛЬНОЙ ОСЬЮ ВРАЩЕНИЯ". RADIOELECTRONIC AND COMPUTER SYSTEMS, № 1 (23 лютого 2018): 77–86. http://dx.doi.org/10.32620/reks.218.1.10.

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The questions connected with increase of efficiency of functioning of a wind power plant with a vertical axis of rotation are considered.Such plants convert the energy of the wind flow into rotational energy of the generator shaft, pump or other actuators. An overview of the design options for wind turbines of this type is presented. For vertically-axial wind power plants, in comparison with horizontally-propeller ones, it is possible to increase their efficiency by providing insensitivity to wind direction change. This is possible provided that the angular position of the blades with respect

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20

Zhang, Fan, Martin Böhle, and Shouqi Yuan. "Experimental investigation on the performance of a side channel pump under gas–liquid two-phase flow operating condition." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 231, no. 7 (2017): 645–53. http://dx.doi.org/10.1177/0957650917713090.

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Side channel pump is a kind of small volume vane pump with low flow rate but high head and most side channel pumps can transport gas–liquid two-phase flow. In order to investigate the performance of this type of pump depending on the blade suction angle under gas–liquid two-phase flow operating condition, an experimental study has been carried out. The head and efficiency curves, and the influence of blade suction angle changes on these curves for different inlet gas volume fraction states are analyzed in detail. Moreover, the gas transporting capability of the impeller with three different bl

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21

Zhou, Lingjiu, Meng Liu, Zhengwei Wang, Demin Liu, and Yongzhi Zhao. "Numerical simulation of the blade channel vortices in a Francis turbine runner." Engineering Computations 34, no. 2 (2017): 364–76. http://dx.doi.org/10.1108/ec-10-2015-0302.

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Purpose This study analyzes the blade channel vortices inside Francis runner with a particular focus on the identification of different types of vortices and their causes. Design/methodology/approach A single-flow passage of the Francis runner with refined mesh and periodic boundary conditions was used for the numerical simulation to reduce the computational resource. The steady-state Reynolds-averaged Navier–Stokes equations closed with the k-ω shear–stress transport (SST) turbulence model were solved by ANSYS CFX to determine the flow field. The vortices were identified by the second largest

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22

Zhang, Hong Ming, and Li Xiang Zhang. "Numerical Simulation of Blade Channel Vortex in a Low Head Francis Turbine." Applied Mechanics and Materials 291-294 (February 2013): 1958–62. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1958.

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The paper presents numerical simulation of blade channel vortex in a low head Francis turbine using OpenFoam code. A mixture assumption and a finite rate mass transfer model were introduced to analyze blade channel vortex. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results have shown that using cavitation model to analyze blade channel vortex is very effective.

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23

Belopukhov, V. N., S. Y. Borovik, P. E. Podlipnov, and Y. N. Sekisov. "On One Special Problem of Blades Identifi cation in Monitoring the Technical State of Gas Turbine Engine Air-Gas Channel." Mekhatronika, Avtomatizatsiya, Upravlenie 26, no. 5 (2025): 268–76. https://doi.org/10.17587/mau.26.268-276.

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This article is devoted to the problem of "targeted" fixing of the measurement results of spatial position of the blades’ tips of compressor or turbine of gas turbine engine (GTE) to a specific struct ural element of the power plant (blade) in monitoring the state of engine’s gas-air channel under limitations on use of diagnostic equipment and, in particular, the impossibility of installing the shaft’s angular position sensor, that ensures the synchronization of primary converters polling with the rotation period of the turbomachine rotor. The diagnosis of disruptive and surging phenomena in G

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24

Liu, Zhanwang, Zhenlong Wu, and Yakui Liu. "Numerical Simulation of a Turboprop Engine Inlet with a Bypass Channel." Journal of Basic & Applied Sciences 21 (June 24, 2025): 128–35. https://doi.org/10.29169/1927-5129.2025.21.13.

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Turboprop aircraft may face a variety of harsh flight environments during flight, and various foreign objects may be sucked into the engine, among which the inhalation of sand can lead to erosion of the blades of the compressor. Such ingestion often results in compressor blade erosion, which can lead to engine surge and power loss. Therefore, this study explores the aerodynamic and sand separation characteristics of the inlet channel with a bypass channel through numerical simulation methods. ANSYS Fluent software is used to simulate the six-bladed propeller rotation based on the slip-grid tec

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25

Vasudevan, B., A. Prabhu, and R. Narasimha. "Blade manipulators in turbulent channel flow." Experiments in Fluids 12, no. 3 (1992): 200–208. http://dx.doi.org/10.1007/bf00188259.

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26

Ji, Chunjun, Chunyang Li, Junyi Fang, and Qi Sun. "Loss Mechanism of Static Interstage Components of Multistage Centrifugal Compressors for Integrated Blade Design." Mathematical Problems in Engineering 2018 (December 5, 2018): 1–16. http://dx.doi.org/10.1155/2018/9025650.

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Although centrifugal compressors are widely used in construction, they consume a large amount of energy; in existing multistage centrifugal compressors, there is a serious pressure loss of ~15.13% when gas flows through the diffuser, bend, and return channel. In this study, we analyze the loss mechanisms of these stages in detail, using computational fluid dynamics. Based on this analysis, we present a new type of integrated blade, connecting the diffuser, bend, and return channels, which can eliminate the airflow stall phenomenon. Through effective control of the airflow spreading process, we

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27

Abdullah, Bestoon, Vadim Varsegov, and Adolf Limansky. "CENTRIFUGAL COMPRESSOR HEAD CHARACTERISTIC OF A MICRO TURBOJET ENGINE BASED ON NUMERICAL SIMULATION." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 62 (2020): 5–11. http://dx.doi.org/10.15593/2224-9982/2020.62.01.

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Shown the possibility of using the standard ANSYS CFX hydrodynamic software package for calculating the gasdynamic characteristics of the centrifugal compressor impeller of micro turbojet engines with different options for profiling blades which based on physical and numerical modeling. Presented a methodology for designing the impeller of a centrifugal compressor based on solving the inverse problem of gas dynamics. As a result of a numerical study, the head coefficient of various forms of the impeller was obtained and presented the dependences of the head coefficient and efficiency on the bl

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28

McMillin, R. D., and S. C. Lau. "Effect of Trailing-Edge Ejection on Local Heat (Mass) Transfer in Pin Fin Cooling Channels in Turbine Blades." Journal of Turbomachinery 116, no. 1 (1994): 159–68. http://dx.doi.org/10.1115/1.2928271.

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Experiments are conducted to study the local heat transfer distribution and pressure drop in a pin fin channel that models the cooling passages in modern gas turbine blades. The detailed heat/mass transfer distribution is determined via the naphthalene sublimation technique for flow through a channel with a 16-row, staggered 3 × 2 array of short pin fins (with a height-to-diameter ratio of 1.0, and streamwise and spanwise spacing-to-diameter ratios of 2.5) and with flow ejection through holes in one of the side walls and at the straight flow exit (to simulate ejection through holes along the t

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29

Tian, Q. H., H. P. Min, Y. X. Xiao, et al. "Analysis of the pump-turbine cavitation with small guide vane opening on pump mode." IOP Conference Series: Earth and Environmental Science 1411, no. 1 (2024): 012033. https://doi.org/10.1088/1755-1315/1411/1/012033.

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Abstract Cavitation is the main factor affecting the secure and stable operation of pump-turbine units. In this paper, a prototype of pump-turbine with splitter blade was chosen for analysis. The three-dimensional numerical calculation of the entire flow passage is carried out for the pump model under different cavitation number with small guide vane opening, and analysis the flow behaviour and cavitation phenomena. The calculated critical cavitation number is consistent with the experimental results. It is found that the cavitation mainly occurs at the runner long blade low-pressure edge, and

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30

Liu, Jia Zeng, Jian Min Gao, Tie Yu Gao, and Jiao Jun Shi. "Heat Transfer in Narrow Rectangular Channels with Rib Turbulators." Advanced Materials Research 354-355 (October 2011): 1245–51. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.1245.

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An experimental study of heat transfer characteristics of narrow rectangular channels with rib turbulators for Re in the range of 10000-60000 was performed. To simulate the actual geometry and heat transfer structure of blade/vane internal cooling passage, each of the test channels was welded by four stainless steel plates. Because of the three dimensional heat conduction in the walls and heat conduction between the ribbed and smooth walls, the measured temperature distribution along the axial direction of the test channel is a smooth continuous curve, and when the Re is low, the average Nu of

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31

Wang, Yudi, Zhengyang Xu, Deman Meng, Lin Liu, and Zhongdong Fang. "Multi-Physical Field Coupling Simulation and Experiments with Pulse Electrochemical Machining of Large Size TiAl Intermetallic Blade." Metals 13, no. 5 (2023): 985. http://dx.doi.org/10.3390/met13050985.

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Large size TiAl alloy blade is one of the important parts to reduce the weight of advanced aero-engines. However, the precision manufacturing of such blades is a challenge due to their large size, low ductility at room temperature, and high hardness of the TiAl alloy. Electrochemical machining (ECM) is a very promising method for the precision manufacturing of such blades, considering its unique advantages. In this study, a very comprehensive multi-physical field coupling simulation and pulse ECM experiments on large size TiAl alloy blades are carried out. Geometric and theoretical models invo

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32

Chen, Bo, Xiaowu Chen, Zuchao Zhu, and Xiaojun Li. "Correlation between the Internal Flow Pattern and the Blade Load Distribution of the Centrifugal Impeller." Machines 10, no. 1 (2022): 40. http://dx.doi.org/10.3390/machines10010040.

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The blade load distributions reflect the working characteristics of centrifugal impellers, and the vortexes in the impeller channel affect the blade load distribution, but the mechanism of this phenomenon is still unclear. In this study, particle image velocimetry (PIV) was adopted to clarify the correlation between the internal flow pattern and the blade load distribution. The internal flow pattern and the blade load distribution were presented under different working conditions to study the influence of the internal flow pattern on the blade load. Results showed that the vortexes in the flow

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33

Frąckowiak, Andrzej, Aleksander Olejnik, Agnieszka Wróblewska, and Michał Ciałkowski. "Application of the Protective Coating for Blade’s Thermal Protection." Energies 14, no. 1 (2020): 50. http://dx.doi.org/10.3390/en14010050.

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This paper presents an algorithm applied for determining temperature distribution inside the gas turbine blade in which the external surface is coated with a protective layer. Inside the cooling channel, there is a porous material enabling heat to be transferred from the entire volume of the channel. This algorithm solves the nonlinear problem of heat conduction with the known: heat transfer coefficient on the external side of the blade surface, the temperature of gas surrounding the blade, coefficients of heat conduction of the protective coating and of the material the blade is made of as we

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34

Fan, Hong-Zhou, Shang-Jin Wang, Guang Xi, and Yan-Long Cao. "A novel tool-path generation method for five-axis flank machining of centrifugal impeller with arbitrary surface blades." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231, no. 1 (2016): 155–66. http://dx.doi.org/10.1177/0954405415599943.

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The centrifugal impeller with arbitrary surface blades is a very important component in automobile, ships, and aircraft industry, and it is one of the most difficult parts to process. Focusing on the machining efficiency improvement, combining the geometric advantages of ruled surface and arbitrary surface, and utilizing the efficient and accurate advantages of flank machining and point machining, this article presents a novel and targeted tool-path generation method and algorithm for five-axis flank machining of centrifugal impeller with arbitrary surface blades. In light of specific characte

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Naas, Toufik Tayeb, Mostefa Telha, Ismail Ghibeche, Omar Mokhtar Khelifa, and Salem Ben Abdelhafid. "Cooling Efficiency of a NACA4412 airfoil: Numerical application." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (2024): 906–25. http://dx.doi.org/10.54021/seesv5n1-048.

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The temperatures imposed on the blades of the first stages of turbines are generally very high; these expose the latter to harmful thermal effects, pushing manufacturers to continually improve techniques for cooling the blades. It is true that by increasing the temperature of the gases at the inlet of the turbines, we increase the efficiency, the performance of the machines, and we improve the power and fuel consumption with a significant reduction in polluting gases. Thus, the current general trend among manufacturers is to design machines that operate at increasingly high inlet temperatures.

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Condruz, Mihaela Raluca, Tiberius Florian Frigioescu, Gheorghe Matache, Adina Cristina Toma, and Teodor Adrian Badea. "Investigation on Designing and Development of a Selective Laser Melting Manufactured Gas Turbine Blade—Proof-of-Concept." Inventions 10, no. 3 (2025): 36. https://doi.org/10.3390/inventions10030036.

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In this study, a conceptual turbine blade model with internal cooling channels was designed and fabricated using the selective laser melting (SLM) process. The optimal manufacturing orientation was evaluated through simulations, and the results indicated that vertical orientation yielded the best outcomes, minimizing support material usage and distortion despite increased manufacturing time. Two configurations were produced, namely, an entire-turbine blade model and a cross-sectional model. Non-destructive analyses, including 3D laser scanning for dimensional accuracy, surface roughness measur

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Quan, Hui, Yanan Li, Lei Kang, Xinyang Yu, Kai Song, and Yongkang Wu. "Influence of Blade Type on the Flow Structure of a Vortex Pump for Solid-Liquid Two-Phase Flow." Machines 9, no. 12 (2021): 353. http://dx.doi.org/10.3390/machines9120353.

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Vortex pumps have good non-clogging performance owing to their impellers being retracted into retraction cavities, but they are much less efficient than ordinary centrifugal pumps. In this paper, numerical simulations were performed on a model of the 150WX200-20 vortex pump for four different blade types, and the influence of blade structure on pump performance was determined. The simulations revealed the existence of axial vortices in the flow passage between the blades in the impeller region. The geometric characteristics of these axial vortices were more regular in two-phase solid-liquid fl

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Yang, Jing. "Analysis on Hydraulic Design of Runner Blades of Francis Turbine." Studies in Social Science Research 4, no. 4 (2023): p175. http://dx.doi.org/10.22158/sssr.v4n4p175.

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Francis turbine is the most widely used model in hydropower station, and the hydraulic design of runner blades affects the efficiency of the unit. This paper discusses how to complete the hydraulic design of Francis turbine runner blades according to the given parameters. In hydraulic design of Francis turbine runner, firstly, the structural scheme is determined according to the given parameters. On the basis of referring to excellent hydraulic model, a Francis turbine runner blade is designed according to the given head. By analyzing and calculating the data, the geometric parameters and axia

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Myalenko, V. I. "Simulation-Based Analysis of Pressure Distribution on Rotary Soil Loosener Blades." Agricultural Machinery and Technologies 19, no. 1 (2025): 30–34. https://doi.org/10.22314/2073-7599-2025-19-1-30-34.

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The paper highlights the necessity of developing new energy-efficient machinery designs to implement minimum tillage technologies effectively. The use of rotary loosening tools for surface soil treatment at seed sowing depth offers several advantages over traditional implements in terms of both energy efficiency and reduced soil impact intensity. (Research purpose) The study aims to determine the distribution patterns of soil pressure on the blades of a rotary soil loosener under simulated loading conditions. (Materials and methods) A simulation-based modeling approach was used to analyze the

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Bi, Chenyu, and Jiawen Li. "Effect of Radial Height of Helical Static Blade on the Cavitation Performance of Inducer." Applied Sciences 12, no. 8 (2022): 3897. http://dx.doi.org/10.3390/app12083897.

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Cavitation is a major concern in liquid rocket engine turbopumps, and as an effective measure to improve cavitation quality, an inducer with helical static blades has attracted attention in recent years. In order to study the effect of the radial height of helical static blades on the cavitation performance of the inducer, CFD methods based on the Reynolds-averaged N-S equation, the standard k-ε turbulent model, and the Schnerr and Sauer cavitation model are employed to analyze the cavitation flow characteristics of a certain inducer with different helical static blades. The results show that

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Li, Zhehong, Xinxue Ye, and Yikun Wei. "Investigation on Vortex Characteristics of a Multi-Blade Centrifugal Fan near Volute Outlet Region." Processes 8, no. 10 (2020): 1240. http://dx.doi.org/10.3390/pr8101240.

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The origins and effects of the complex vortex structure near the volute outlet of a multi-blade centrifugal fan are investigated in this paper. Due to the wide blade and short blade channel, the airflow maintains a large radial velocity during the blade channel. This continuous radial partial velocity causes vortices to be generated at the region of volute outlet. Then, the secondary flow close to the impeller generate from the center to the sides in volute. It is obtained that the streamlines are divided into two parts (backflow and outflow) at volute outlet. Although the vortices near volute

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He, Yufan, Can Luo, Li Cheng, Yandong Gu, and Bin Gu. "Energy Characteristics in the Flow Channel of the Shaft-Type Tubular Pumping Station Considering Tides." Journal of Marine Science and Engineering 12, no. 4 (2024): 607. http://dx.doi.org/10.3390/jmse12040607.

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The shaft-type tubular pumping station has the remarkable characteristics of a large flow rate and high efficiency. It can realize the functions of irrigation, pumping, and drainage through pumping and generating conditions considering tides. Moreover, it is widely used in the plain area of eastern China and the tidal area along the marine region. Due to the different topological features of the airfoil of the impeller, the energy evolution characteristics of the shaft-type tubular pumping station during pumping and generating conditions remain unclear. The entropy generation theory was introd

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LI, Haofan, and Xue YUN. "Numerical simulation and experimental investigation of heat transfer performance of turbine blade with ribbed channel." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 41, no. 4 (2023): 750–56. http://dx.doi.org/10.1051/jnwpu/20234140750.

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A combination of numerical simulation and experimental test is carried out, and the vortex core visualization technology is adopted to visualize vortex in the flow field and study the heat transfer mechanism. The heat transfer characteristics of air flow in 45° ribbed straight channel with aspect ratio of 1 and the other 6 new ribbed channels are studied. The results show that the average heat transfer performance of the new ribbed channel with all the fins 3.8 mm cut at the far end of fins along the flow direction is the best by comparing with the original ribbed straight channel under the sa

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Boldyrev, Aleksei V., Sergei V. Boldyrev, and Dmitrii L. Karelin. "THE EFFECT OF BLADE PROFILE ON THE PERFORMANCE OF A SIDE CHANNEL PUMP." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 6, no. 3 (2020): 23–37. http://dx.doi.org/10.21684/2411-7978-2020-6-3-23-37.

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This article presents the results of a numerical modeling of a steady turbulent flow of an incompressible fluid in an open-type vortex pump with an open side channel, comparing the generalized simulation results with the existing experimental data. The mathematical model is based on the Reynolds-averaged Navier — Stokes and continuity equations, as well as on the equations of the two-layer Realizable k-ε turbulence model that accounts for the curvature of streamlines. The authors have estimated the grid independence of the solution and studied the influence of 14 blade profiles on the head and

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Dumitrache, Constantin, Ioan Calimanescu, and Corneliu Comandar. "Naval Centrifugal Compressor Design Using CAD Solutions." Applied Mechanics and Materials 658 (October 2014): 59–64. http://dx.doi.org/10.4028/www.scientific.net/amm.658.59.

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Centrifugal compressors of turbochargersoperate in a wide range of rotational speeds, which depends on the load of the supercharged engine. Current designs of turbocharger compressors exhibit high efficiencies accompanied by high flow capacities [1]. Consequences of aerodynamic optimization are high mean stress values in the blades due to centrifugal loading as well as dynamic stresses due to blade vibrations. Blade vibrations in a turbocharger compressor are assumed to be predominantly excited by unsteady aerodynamic forces [2]. These forces are caused by a variety of sources influencing the

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Aldio, Muhammad Fikhri, Waskito Waskito, Purwantono Purwantono, and Remon Lapisa. "Optimization of impeller blade number in centrifugal pump for crude oil using Solidworks Flow Simulation." Journal of Engineering Researcher and Lecturer 2, no. 3 (2023): 38–51. http://dx.doi.org/10.58712/jerel.v2i3.116.

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Every type of fluid to be transferred has specific characteristics such as viscosity, density, friction, and others, thus requiring the selection of the appropriate pump type. One of the factors influencing the performance of a centrifugal pump is the number of blades used. This research aims to explore the influence of the number of blades on a centrifugal pump used as a fluid transfer device for crude oil. The study was conducted using the Computational Fluid Dynamics (CFD) method. The analyzed variations of the number of blades included three options, namely centrifugal pumps with 12, 14, a

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Zhang, Delong, Yu Wang, Junjie Sha, and Yuguang He. "Performance Prediction of a Turbodrill Based on the Properties of the Drilling Fluid." Machines 9, no. 4 (2021): 76. http://dx.doi.org/10.3390/machines9040076.

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High-temperature geothermal well resource exploration faces high-temperature and high-pressure environments at the bottom of the hole. The all-metal turbodrill has the advantages of high-temperature resistance and corrosion resistance and has good application prospects. Multistage hydraulic components, consisting of stators and rotors, are the key to the turbodrill. The purpose of this paper is to provide a basis for designing turbodrill blades with high-density drilling fluid under high-temperature conditions. Based on the basic equation of pseudo-fluid two-phase flow and the modified Bernoul

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Myalenko, V. I., and A. A. Kosolapova. "INVESTIGATION OF THE PRESSURE DISTRIBUTION ON THE BLADES OF A ROTARY SOIL RIPPER BY SIMULATION MODELING." Innovative solutions in the agroindustrial complex, no. 1 (March 2025): 70–79. https://doi.org/10.71453/3034-4174-2025-1-70-79.

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The introduction of minimal tillage technologies requires the search for new designs of energy-saving equipment. The use of rotary leavening agents for surface tillage to the depth of seeding has a number of advantages in comparison with traditional tools both in terms of energy intensity and stress on the soil. The purpose of the study is to establish the nature of the distribution of soil pressure on the blades of a rotary ripper by simulated loading. To achieve this goal, a simulation method was used to simulate the loading of rotary ripper blades by the soil environment. The values of the

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Münsterjohann, Sven, and Stefan Becker. "Wall Pressure and Blade Surface Pressure in a Side Channel Blower." International Journal of Rotating Machinery 2018 (June 3, 2018): 1–17. http://dx.doi.org/10.1155/2018/2308759.

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In side channel blowers, the pressure field is the result of complex, inner flow mechanisms. While there are already experimental investigations on the wall pressure distributions, little is known about the pressure in the rotating system, i.e., on the blade surface. In this work, we present an experimental setup for measuring the unsteady blade surface pressure in several positions. The acquired data will be complemented by and compared to the additionally measured wall pressure on the side channel housing. Miniature pressure sensors are integrated into the impeller. It is modified to ensure

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Mambro, Antonio, Francesco Congiu, Enzo Galloni, and Davide Lanni. "Blade Drag Resistance in Windage Operating of Low Pressure Steam Turbines." Fluids 7, no. 12 (2022): 372. http://dx.doi.org/10.3390/fluids7120372.

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On the basis of previous experimental and numerical studies, the windage operation of low-pressure turbine rear stage is investigated. The state of the steam within the rotor channel was correlated to measurements carried out downstream of the blades for different ventilation regimes. Considering very-low-volume flow conditions, the ventilation power was related to the drag force acting on the moving blades. A correlation was identified between the drag coefficient and a Reynolds number relative to the reverse flow height. This correlation can be used in order to predict the power loss of a la

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