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Relevant bibliographies by topics / Axial thrust force of a turbine

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Academic literature on the topic 'Axial thrust force of a turbine'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Journal articles on the topic "Axial thrust force of a turbine"

1

Zhang, Fei, Yue Lv, Zhonghua Gui, and Zhengwei Wang. "Effect of the Diameter of Pressure-Balance Pipe on Axial Hydraulic Thrust." Journal of Marine Science and Engineering 9, no. 7 (2021): 724. http://dx.doi.org/10.3390/jmse9070724.

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The axial hydraulic thrust has great influence on the safety and stability of a pump turbine. A common way to balance hydraulic thrust is to install a pressure-balance pipe, and the change in pipe diameter is one of the important factors affecting axial hydraulic thrust. In this paper, the influence of the diameter changes in a pressure-balance pipe on axial hydraulic thrust of a pump turbine, plus the seal clearance flow, is studied and analyzed under three work conditions, i.e., 100%, 75%, and 50% loads. It is found that under 100% and 75% load conditions, the axial hydraulic thrust increase

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Revaz, Tristan, and Fernando Porté-Agel. "Large-Eddy Simulation of Wind Turbine Flows: A New Evaluation of Actuator Disk Models." Energies 14, no. 13 (2021): 3745. http://dx.doi.org/10.3390/en14133745.

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Large-eddy simulation (LES) with actuator models has become the state-of-the-art numerical tool to study the complex interaction between the atmospheric boundary layer (ABL) and wind turbines. In this paper, a new evaluation of actuator disk models (ADMs) for LES of wind turbine flows is presented. Several details of the implementation of such models are evaluated based on a test case studied experimentally. In contrast to other test cases used in previous similar studies, the present test case consists of a wind turbine immersed in a realistic turbulent boundary-layer flow, for which accurate

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3

Qiu, Li Jun, Jia Yang, and Su Ying Xu. "The Analysis and Design of Turbocharger Thrust Bearing." Advanced Materials Research 308-310 (August 2011): 1333–36. http://dx.doi.org/10.4028/www.scientific.net/amr.308-310.1333.

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Turbocharger turbine shaft thrust bearing is the role of high-speed rotating turbine to withstand the axial force generated by the turbine shaft and a part of the axial position. Fixed on the intermediate thrust bearing on the two sides and both sides of the ring, respectively, relative sliding. Sliding contact surface produces a condition of dynamic pressure oil film structure and shape of the oil wedge. Bearing the sides of the structural design of the oil wedge slot and forming a design to solve the main content. Bearing thrust bearing stiffness and rotation in the process of stress state a

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4

Lee, In-Beom, Seong-Ki Hong, and Bok-Lok Choi. "Investigation of the axial thrust load using numerical and experimental techniques during turbocharger operation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 232, no. 6 (2017): 755–65. http://dx.doi.org/10.1177/0954407017706859.

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Identification of the axial thrust load during the operating conditions of a turbocharger provides useful information to turbocharger designers. The axial force acting on the thrust bearing is mainly caused by the imbalance between the turbine wheel and the compressor wheel. It has a significant influence on the friction losses, which reduce the efficiency and the performance of a high-speed turbocharger. Well-known formulae for calculating the thrust load and the mechanical friction have been given in the literature. However, it is difficult to determine an accurate axial force by an analytic

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Sun, Huifang, Yue Lv, Jinbing Ni, Xianyu Jiang, and Zhengwei Wang. "Effect of Seal Locations of Pump-Turbine on Axial Hydraulic Trust." Journal of Marine Science and Engineering 9, no. 6 (2021): 623. http://dx.doi.org/10.3390/jmse9060623.

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Axial hydraulic thrust is an important factor that affects safety and stability of pump turbine operation. Research and analysis of axial hydraulic thrust is of a great significance for guiding the safe and stable operation of a pumped storage power station. Since the runner shape of the pump turbine is flat and its radial dimension is large, an increase of leakage can happen easily. In order to reduce the leakage and improve the efficiency of the unit, a labyrinth ring seal is usually used in the upper crown and lower ring of the runner because the inner clearance of the seal has a great infl

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Mao, Zhongyu, Ran Tao, Funan Chen, et al. "Investigation of the Starting-Up Axial Hydraulic Force and Structure Characteristics of Pump Turbine in Pump Mode." Journal of Marine Science and Engineering 9, no. 2 (2021): 158. http://dx.doi.org/10.3390/jmse9020158.

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During the starting up of the pump mode in pump turbines, the axial hydraulic force acting on the runner would develop with the guide vane opening. It causes deformation and stress on the support bracket, main shaft and runner, which influence the operation security. In this case, the axial hydraulic force of the pump turbine is studied during the starting up of pump mode. Its influences on the support bracket and main shaft are investigated in detail. Based on the prediction results of axial hydraulic force, the starting-up process can be divided into “unsteady region” and “Q flat region” wit

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7

Cho, Soo-Yong, Yang-Beom Jung, and Kwang Phil Kyun. "Axial Force Prediction and Maneuvering on the Thrust Bearing on a Two-Stage Radial Turbine." Journal of the Korean Society for Power System Engineering 22, no. 5 (2018): 51–62. http://dx.doi.org/10.9726/kspse.2018.22.5.051.

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Wimshurst, A., and R. Willden. "Spanwise flow corrections for tidal turbines." International Marine Energy Journal 1, no. 2 (Nov) (2018): 111–21. http://dx.doi.org/10.36688/imej.1.111-121.

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Actuator line computations of two different tidal turbine rotor designs are presented over a range of tip speed ratios. To account for the reduction in blade loading on the outboard sections of these rotor designs, a spanwise flow correction is applied. This spanwise flow correction is a modified version of the correction factor of Shen et al. (Wind Energy 2005; 8: 457-475) which was originally developed for wind turbine rotors at high tip speed ratios. The modified correction is described as ‘directionally dependent’ in that it allows a more aggressive reduction in the tangential (torque prod

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Tongchitpakdee, Chanin, Sarun Benjanirat, and Lakshmi N. Sankar. "Numerical Studies of the Effects of Active and Passive Circulation Enhancement Concepts on Wind Turbine Performance." Journal of Solar Energy Engineering 128, no. 4 (2006): 432–44. http://dx.doi.org/10.1115/1.2346704.

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The aerodynamic performance of a wind turbine rotor equipped with circulation enhancement technology (trailing-edge blowing or Gurney flaps) is investigated using a three-dimensional unsteady viscous flow analysis. The National Renewable Energy Laboratory Phase VI horizontal axis wind turbine is chosen as the baseline configuration. Experimental data for the baseline case is used to validate the flow solver, prior to its use in exploring these concepts. Calculations have been performed for axial and yawed flow at several wind conditions. Results presented include radial distribution of the nor

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Chen, Huixiang, Daqing Zhou, Yuan Zheng, Shengwen Jiang, An Yu, and You Guo. "Load Rejection Transient Process Simulation of a Kaplan Turbine Model by Co-Adjusting Guide Vanes and Runner Blades." Energies 11, no. 12 (2018): 3354. http://dx.doi.org/10.3390/en11123354.

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To obtain the flow mechanism of the transient characteristics of a Kaplan turbine, a three-dimensional (3-D) unsteady, incompressible flow simulation during load rejection was conducted using a computational fluid dynamics (CFD) method in this paper. The dynamic mesh and re-meshing methods were performed to simulate the closing process of the guide vanes and runner blades. The evolution of inner flow patterns and varying regularities of some parameters, such as the runner rotation speed, unit flow rate, unit torque, axial force, and static pressure of the monitored points were revealed, and th

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Dissertations / Theses on the topic "Axial thrust force of a turbine"

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Kosar, Jakub. "Konstrukční řešení reverzní vírové turbiny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-416611.

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The thesis deals with the construction design of reversible swirl turbine used in a tidal range power plant for bidirectional operation. The theoretical part provides an overview of state-of-the-art technologies in the usage of tidal energy, mostly by means of tidal range and stream tidal power plants. It also analyses respective designs of tidal turbines and their advantages and disadvantages. The practical part of the thesis demonstrates individual steps applied when examining loading forces and also shows the design method and strength inspection procedure of the turbine and its parts, espe

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Cirit, Ali. "Design And Performance Evaluation Of Mixed Flow Pumps By Numerical Experimentation And Axial Thrust Investigation." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608972/index.pdf.

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In this thesis a vertical turbine mixed flow pump that has a flow rate of 40 l/s and 16 mwc head at 2900 rpm is designed. Effect of design parameters are investigated and flow inside the pump is analyzed with the help of numerical experimentations. The designed pump is manufactured and tested in Layne Bowler Pumps Company and completed in T&Uuml<br>BiTAK - TEYDEB project. Pump is designed in the tolerance limits that are defined in the standard TS EN ISO 9906. Numerical experimentation results for performance charecteristics show the same trend with the test results. In addition, axial thrus

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Žatko, Miroslav. "Výpočtová analýza dynamických vlastností axiálních ložisek." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229361.

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This master´s thesis solves the problem of stationary viscous flow of incompressible fluids in thin layers of fluid film lubrication in fixed pad thrust bearings. The parametric computational model of oil domain was created for investigation the distribution of pressure, velocity and thermal fields together with the determination of the basic parameters as axial force, heating up and friction loss. Subsequently this model was applied for investigation influence of uneven bearing clearance. The problem task was solved by final volume method in Ansys CFX 12.0 software.

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Trávníček, Zdeněk. "Kondenzační parní turbína." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318857.

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The aim of the master’s thesis is to design a condensing steam turbine based on given inputs. Firstly, a design and computation of heat balance is made, followed by thermodynamic calculation of steam turbine channel and a design of compensatory piston of axial forces. Last part of the thesis consists of a review of a change of cooling water temperature in condensator on last turbine stages. The structural drawing of longitudinal section of turbine is included as well.

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Books on the topic "Axial thrust force of a turbine"

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Escudier, Marcel. Introduction to Engineering Fluid Mechanics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198719878.001.0001.

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Turbojet and turbofan engines, rocket motors, road vehicles, aircraft, pumps, compressors, and turbines are examples of machines which require a knowledge of fluid mechanics for their design. The aim of this undergraduate-level textbook is to introduce the physical concepts and conservation laws which underlie the subject of fluid mechanics and show how they can be applied to practical engineering problems. The first ten chapters are concerned with fluid properties, dimensional analysis, the pressure variation in a fluid at rest (hydrostatics) and the associated forces on submerged surfaces, t

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Book chapters on the topic "Axial thrust force of a turbine"

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Liu, Jing, Fengtao He, and Deyuan Zhang. "An experimental study of thrust force in Ultrasonic Axial Vibration Drilling of fastener holes in aluminum alloys." In Advances in Energy Equipment Science and Engineering. CRC Press, 2015. http://dx.doi.org/10.1201/b19126-492.

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Kawakami, S., H. Hayakawa, H. Watanabe, Y. Ogura, T. Takishita, and Y. Suzuki. "Development of Ultrasonic Bolt Axial Force Inspection System for Turbine Bolts in a Thermal Power Plant." In Performance of Bolting Materials in High Temperature Plant Applications. CRC Press, 2020. http://dx.doi.org/10.1201/9781003070399-36.

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Yan, Qing-dong, Lu Tan, and Wei Wei. "Research on the thrust force reduction effect of balance holes on a turbine hub in a hydrodynamic torque converter." In Power Engineering. CRC Press, 2016. http://dx.doi.org/10.1201/9781315386829-18.

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Conference papers on the topic "Axial thrust force of a turbine"

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Stasenko, David, Nikhil Rao, and Diganta Narzary. "Thrust Force Measurements in an Axial Steam Turbine Test Rig." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14673.

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Abstract Large mechanical drive steam turbines used in the oil & gas industry are operating at increasingly higher inlet pressure, generating higher shaft power. Those higher power requirements result in larger disk diameters and surface areas. High thrust forces can be a result, due to both the high inlet pressure and large disk surface area. Industry standards require oversizing of thrust bearings to handle uncertainty in thrust predictions. These factors make improvement in thrust prediction accuracy and mitigation strategies important. A full-size, axial flow steam turbine test rig cap

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Narzary, Diganta, David Stasenko, and Nikhil Rao. "Thrust Force Measurements in an Axial Steam Turbine Test Rig: Effect of Disk Balance Holes." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59242.

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Abstract A full-size, full-speed, axial flow steam turbine test rig capable of measuring turbine thrust, and static pressures in the rotor-stator disk cavity was built and commissioned. The test rig was operated in a single-stage configuration for the test results first reported in Stasenko et al. [1], and now in this paper. The stage has stationary axial face seals radially inward of the airfoils, near the rotor disk rim. The face seals divide the rotor-stator cavity into inner and outer circumferential cavities, both of which were instrumented with static pressure probes on the stator radial

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3

Lüddecke, Bernhardt, Philipp Nitschke, Michael Dietrich, Dietmar Filsinger, and Michael Bargende. "Unsteady Thrust Force Loading of a Turbocharger Rotor During Engine Operation." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43559.

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The bearing system of a turbocharger has to keep the rotor in the specified position and thus has to withstand the rotor forces that result from turbocharger operation. Hence, its components need to be designed in consideration of the bearing loads that have to be expected. The applied bearing system design also has significant influence on the overall efficiency of the turbocharger and impacts the performance of the combustion engine. It has to ideally fulfil the trade-off between bearing friction and load capacity. For example, the achievable engine’s low end-torque is reduced, if the bearin

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Bozzi, Luca, Francesco Malavasi, and Valeria Garotta. "Heavy-Duty Gas Turbines Axial Thrust Calculation in Different Operating Conditions." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46351.

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Several types of forces give a contribution to the axial thrust of gas turbines shafts: flow-path forces (due to blades, endwalls and shrouds of compressor and turbine rows), forces acting on the surfaces of rotor-stator cavities, disks forces (due to the different pressure levels in the rotating cavities inside the rotor), etc. As a rule, the estimation of the rotor thrust needs the handling of a large amount of output data, resulting from different codes. This paper presents a calculation tool to estimate the rotor axial thrust from the results of compressor, turbine and secondary air system

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Ma, Can, Zhiqiang Qiu, Jinlan Gou, Jun Wu, Zhenxing Zhao, and Wei Wang. "Axial Force Balance of Supercritical CO2 Radial Inflow Turbine Impeller Through Backface Cavity Design." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76019.

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The supercritical CO2-based power cycle is very promising for its potentially higher efficiency and compactness compared to steam-based power cycle. Turbine is the critical component in the supercritical CO2-based cycle which delivers the power. Compared to the gas turbine or steam turbine of similar power output, the size of the supercritical CO2 radial turbine is much smaller and the axial force on the impeller is much larger. The load on the thrust bearing could be too heavy for long-term safe operation. Therefore, it is necessary to balance the axial force on the impeller through aerodynam

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Wang, Ke, Jinju Sun, Zhilong He, and Peng Song. "Prediction of Axial Thrust Load Acting on a Cryogenic Liquid Turbine Impeller." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-45273.

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A single stage cryogenic liquid turbine is developed for replacing the Joule-Thompson valve and recovering energy from the liquefied air during throttling process in the large-scale internal compression air-separation unit, and evaluation of the impeller axial thrust at different conditions is essential for a reliable bearing design and stable operation. To predict the axial thrust load, a numerical model is established to simulate the turbine flow in a turbine stage environment, which includes the main flow domain (an asymmetrical volute, variable geometry nozzle, impeller, and diffuser), imp

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Wen, Xue-You, Li-chao Zhang, Dan Kou, Dong-ming Xiao, and Han Zhang. "An Adjustment Method of Axial Force on Marine Multi-Shaft Gas Turbine Rotor." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25802.

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During the research and development of marine multi-shaft gas turbine, the axial force on the thrust ball bearing of the rotor is required to be measured under actual operating conditions, and then the axial force would be adjusted to a predetermined range with a predetermined method, so as to assure the bearing’s long-term and reliable operation. Basing on the theoretical analysis and engineering practice, we propose a practical method for the analysis and adjustment of the axial force. The method features combining the analysis of the air system and the small deviation analysis for the gas t

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San Andrés, Luis, Keun Ryu, and Paul Diemer. "Prediction of Gas Thrust Foil Bearing Performance for Oil-Free Automotive Turbochargers." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25940.

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Green technologies are a mandate in a world concerned with saving resources and protecting the environment. Oil-free turbocharger systems for passenger and commercial vehicles dispense with the lubricant in the internal combustion engine, hence eliminating not just oil coking, but also suppressing nonlinear behavior, instability and excessive noise; all factors to poor reliability and premature mechanical failure. The work hereby presented is a stepping stone in a concerted effort towards developing a computational design tool integrating both radial and thrust foil gas bearings for oil-free a

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Zhang, Jizhong, Harold Sun, Liangjun Hu, and Hong He. "Fault Diagnosis and Failure Prediction by Thrust Load Analysis for a Turbocharger Thrust Bearing." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22320.

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The axial thrust load of a turbocharger is generated due to the pressure differential between the compressor and turbine. Changes in compressor and turbine geometry and variations in test conditions can influence the thrust load. Once the axial force exceeds the loading capacity limit of a thrust bearing, the balance of the thrust bearing system cannot be maintained, which may lead to a catastrophic failure of the turbocharger. In this paper, a fault diagnosis of a turbocharger that experienced a catastrophic failure during flow bench testing is analyzed. A detailed analysis of a turbocharger

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San Andrés, Luis, Travis A. Cable, Karl Wygant, and Andron Morton. "On the Predicted Performance of Oil Lubricated Thrust Collars in Integrally Geared Compressors." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25914.

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Integrally geared compressors (IGCs) comprise of single stage impellers installed on the ends of pinion shafts, all driven by a main bull gear (BG) and shaft system. When compared to single shaft multistage centrifugal compressors, the benefits of IGCs include better thermal efficiency, reduced footprint and simple foundation, dispensing with a high speed coupling, as well as better access for maintenance and overhauls. In IGCs the compression of the process gas induces axial loads on the pinion shafts that are transmitted via thrust collars (TCs) to the main drive shaft and balanced by a sing

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