Log in

Relevant bibliographies by topics / Radial-axial oscillations of single-disk rotor / Journal articles

To see the other types of publications on this topic, follow the link: Radial-axial oscillations of single-disk rotor.

Journal articles on the topic 'Radial-axial oscillations of single-disk rotor'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 21 journal articles for your research on the topic 'Radial-axial oscillations of single-disk rotor.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Hao, Long, Dongjiang Han, Wei Zhao, Qingjun Zhao, and Jinfu Yang. "Numerical and Experimental Investigation on Axial Rub Impact Dynamic Characteristics of Flexible Rotor Supported by Hybrid Gas Bearings." Journal of Low Frequency Noise, Vibration and Active Control 40, no. 3 (2021): 1252–70. http://dx.doi.org/10.1177/1461348420986645.

Full text

Abstract:

Gas bearings are widely used in micro- and small turbomachinery. Because of the pursuit of high efficiency, turbomachinery adopts small clearance of rotor and stator. The gas bearing rotor system easily suffers from rub impact due to the inherently low damping and load capacity of gas film. Axial rub impact may lead to catastrophic failure of gas bearing rotor system. Previous work put emphasis on radial rub, and only a few papers researched on the axial rub impact by simulation method. In this paper, dynamic responses of full annular axial rub are investigated numerically and experimentally.

APA, Harvard, Vancouver, ISO, and other styles

2

Mordanov, Sergey, Anatoly Khomyakov, Victoria Gushshamova, Elizaveta Vlasova, Mikhail Beloded, and Pavel Shkurin. "CFD simulation of unstable fluid flows in the rotor of a high-speed precipitation centrifuge." ITM Web of Conferences 59 (2024): 02014. http://dx.doi.org/10.1051/itmconf/20245902014.

Full text

Abstract:

The results of a numerical study of unstable fluid flows in the rotor of a high-speed vertical precipitation centrifuge are presented. It is shown that during the operation of a high-speed precipitation centrifuge, a qualitative change in the hydrodynamic regime is possible from conditionally laminar to conditionally turbulent, characterized by large-scale axial and radial pulsations of the liquid phase, accompanied by a significant decrease in sedimentation efficiency. It has been established that the flow pulsations are not random in nature, but the amplitude of these pulsations first increa

APA, Harvard, Vancouver, ISO, and other styles

3

Shevchenko, S. S. "Mathematical modeling of centrifugal machines rotors seals for the purpose of assessing their influence on dynamic characteristics." Mathematical Modeling and Computing 8, no. 3 (2021): 422–31. http://dx.doi.org/10.23939/mmc2021.03.422.

Full text

Abstract:

With an increase of equipment parameters, such as the pressure of the sealing medium and the speed of shaft rotation, the problems ensuring its hermetization efficiency are rising up. In addition to hermetization itself, the sealing system affect the overall operational safety of the equipment, especially vibratory. Groove seals are considered as hydrostatodynamic supports capable of effectively damping rotor oscillations. To determine the dynamic characteristics, models of grooved seals and single-disc rotors with grooved seals are examined. The obtained analytical dependences for computation

APA, Harvard, Vancouver, ISO, and other styles

4

Chiang, H. W. D., and S. Fleeter. "Passive Control of Flow-Induced Vibrations by Splitter Blades." Journal of Turbomachinery 116, no. 3 (1994): 489–500. http://dx.doi.org/10.1115/1.2929438.

Full text

Abstract:

Splitter blades as a passive control technique for flow-induced vibrations are investigated by developing an unsteady aerodynamic model to predict the effect of incorporating splitter blades into the design of an axial flow blade row operating in an incompressible flow field. The splitter blades, positioned circumferentially in the flow passage between two principal blades, introduce aerodynamic and/or combined aerodynamic-structural detuning into the rotor. The unsteady aerodynamic gust response and resulting oscillating cascade unsteady aerodynamics, including steady loading effects, are det

APA, Harvard, Vancouver, ISO, and other styles

5

Chen, Jiajia, Fanfu Yin, Xinkai Li, et al. "Unsteady aerodynamic modelling for dual-rotor wind turbines with lifting surface method and free wake model." Journal of Physics: Conference Series 2265, no. 4 (2022): 042055. http://dx.doi.org/10.1088/1742-6596/2265/4/042055.

Full text

Abstract:

Abstract A time-marching aerodynamic model for dual-rotor wind turbines (DRWT) is presented with the lifting surface method and free wake model. The performance of a reference DRWT by two axial connected NREL 5MW wind turbines is calculated to verify the algorithm. The output converges with remarkable oscillation. Free wakes swell under the coupling effect. The accumulated power of DRWT outranges single-rotor wind turbine (SRWT) by a limited extent under certain operating conditions. The front rotor (FR) produces the major portion of the power, especially for low inflow velocity. The unsteadin

APA, Harvard, Vancouver, ISO, and other styles

6

Benra, F. K. "Numerical and Experimental Investigation on the Flow Induced Oscillations of a Single-Blade Pump Impeller." Journal of Fluids Engineering 128, no. 4 (2005): 783–93. http://dx.doi.org/10.1115/1.2201629.

Full text

Abstract:

This contribution is addressed to the periodically unsteady flow forces of a single-blade sewage water pump, which affect the impeller and produce radial deflections of the pump shaft. The hydrodynamic excitation forces were calculated from the time dependent flow field, which was computed by numerical simulation of the three-dimensional, viscous, time-dependent flow in the pump. A commercial computer code was used to determine the time accurate Reynolds averaged Navier-Stokes equations. The transient radial flow forces at all time steps for a complete impeller revolution affect the rotor of t

APA, Harvard, Vancouver, ISO, and other styles

7

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.

Full text

Abstract:

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

APA, Harvard, Vancouver, ISO, and other styles

8

Xue, Qichao, Xueying Li, and Jing Ren. "Numerical Research on Flow Characteristics at High Radii of Rim Seals with Different Geometric Structures." Energies 17, no. 8 (2024): 1877. http://dx.doi.org/10.3390/en17081877.

Full text

Abstract:

In the high-temperature mainstream of gas turbines, there is a rim clearance between the rotor and the stator. A rim seal is to prevent the intrusion of high-temperature gas by spraying cool fluid from the inside of the rim clearance to the outside. In the past research on rim seals, the focus was on the overall performance of the sealing structure, and the flow in the disc cavity was studied more, but the high-radius flow was simplified. In recent years, additional research in the field has focused on more complex sealing structures and high-radius flows, such as the interface between the dis

APA, Harvard, Vancouver, ISO, and other styles

9

Borovik, Sergey Yu, Valeriy P. Danilchenko, Marina M. Kuteynikova, and Yuriy N. Sekisov. "The errors of the shaft's axial movement measuring in the single-coil-eddy-current-sensors-based system for the monitoring the state of radial thrust bearing of the NK-33 liquid rocket engine’s turbopump unit." Vestnik of Samara State Technical University. Technical Sciences Series 32, no. 1 (2024): 86–101. http://dx.doi.org/10.14498/tech.2024.1.6.

Full text

Abstract:

This article continues a series of publications devoted to the problems of early state diagnosis of the combined journal-and-thrust bearing of the turbo-pump unit of the liquid-propellant rocket engine NK-33, which is a critical node of the power plant under consideration. The proposed approach is based on the idea of replacing the standard induction sensors of the turbo-pump rotational speed currently used in turbo-pump unit by specially designed single-coil eddy current sensors with sensitive elements in the form of a segment of a linear conductor. The transducers are placed in the same moun

APA, Harvard, Vancouver, ISO, and other styles

10

Camp, T. R., and I. J. Day. "1997 Best Paper Award—Turbomachinery Committee: A Study of Spike and Modal Stall Phenomena in a Low-Speed Axial Compressor." Journal of Turbomachinery 120, no. 3 (1998): 393–401. http://dx.doi.org/10.1115/1.2841730.

Full text

Abstract:

This paper presents a study of stall inception mechanisms in a low-speed axial compressor. Previous work has identified two common flow breakdown sequences, the first associated with a short length-scale disturbance known as a “spike,” and the second with a longer length-scale disturbance known as a “modal oscillation.” In this paper the physical differences between these two mechanisms are illustrated with detailed measurements. Experimental results are also presented that relate the occurrence of the two stalling mechanisms to the operating conditions of the compressor. It is shown that the

APA, Harvard, Vancouver, ISO, and other styles

11

Liu, Zhuoqi, Tianyu Pan, Shiqi Wang, and Zhaoqi Yan. "Characteristics of a Fluidic Oscillator with Low Frequency and Low Speed and Its Application to Stall Margin Improvement." Actuators 11, no. 12 (2022): 341. http://dx.doi.org/10.3390/act11120341.

Full text

Abstract:

Active flow control methods are commonly used in expanding the operating range of compressors. Indeed, unsteady active control methods are the main focus of researchers due to their effectiveness. For constructing an unsteady active control system, reliable actuators are significant. To compare with conventional actuators such as synthetic jet actuators and rotating valves, fluidic oscillators have structurally robust characteristics and can generate self-excited and self-sustained oscillating jets, which leads to its higher applicability in compressors under severe working conditions. Thus, t

APA, Harvard, Vancouver, ISO, and other styles

12

Pavlov, Valentin. "MECHANICAL ROTATION STABILIZER." Transport engineering 2022, no. 11 (2022): 32–38. http://dx.doi.org/10.30987/2782-5957-2022-11-32-38.

Full text

Abstract:

The study objective is to find a mechanical analogue of cyclotron motion and to determine the structure of the corresponding device, which is appropriately called a stabilized rotator. The topic of speed stabilization is relevant. With cyclotron motion, the Lagrangian of an electron is twice as large as its kinetic energy. In terms of macromechanics, this corresponds to the equality of kinetic and potential energies. This condition is key to the possibility of generalizing cyclotron motion to mechanics. It follows from this that the composition of a stabilized rotator should include elements t

APA, Harvard, Vancouver, ISO, and other styles

13

Helming, Paula, Axel von Freyberg, Michael Sorg, and Andreas Fischer. "Wind Turbine Tower Deformation Measurement Using Terrestrial Laser Scanning on a 3.4 MW Wind Turbine." Energies 14, no. 11 (2021): 3255. http://dx.doi.org/10.3390/en14113255.

Full text

Abstract:

Wind turbine plants have grown in size in recent years, making an efficient structural health monitoring of all of their structures ever more important. Wind turbine towers deform elastically under the loads applied to them by wind and inertial forces acting on the rotating rotor blades. In order to properly analyze these deformations, an earthbound system is desirable that can measure the tower’s movement in two directions from a large measurement working distance of over 150 m and a single location. To achieve this, a terrestrial laser scanner (TLS) in line-scanning mode with horizontal alig

APA, Harvard, Vancouver, ISO, and other styles

14

Veismann, Marcel, Christopher Dougherty, and Morteza Gharib. "Effects of rotor separation on the axial descent performance of dual-rotor configurations." Flow 3 (2023). http://dx.doi.org/10.1017/flo.2022.31.

Full text

Abstract:

Rotorcraft can encounter highly unsteady flow when descending at a steep angle, leading to a flow condition called vortex ring state, which is associated with strong oscillatory airloads and substantial losses in mean rotor thrust. This study examines the aerodynamic coupling between closely arranged rotors in vertical flight and assesses the extent to which rotor–rotor interactions affect the rotor performance in this flight stage. Wind tunnel experiments were performed on a small-scale, dual-rotor set-up with adjustable rotor spacing, and the effect of rotor separation on thrust generation w

APA, Harvard, Vancouver, ISO, and other styles

15

Rosenberg, Aaron, and Anupam Sharma. "A Prescribed-Wake Vortex Lattice Method for Preliminary Design of Co-Axial, Dual-Rotor Wind Turbines." Journal of Solar Energy Engineering 138, no. 6 (2016). http://dx.doi.org/10.1115/1.4034350.

Full text

Abstract:

This paper extends the prescribed-wake vortex lattice method (VLM) to perform aerodynamic analysis of dual-rotor wind turbines (DRWTs). A DRWT turbine consists of a large, primary rotor placed co-axially behind a smaller, secondary rotor. The additional vortex system introduced by the secondary rotor of a DRWT is modeled while taking into account the singularities that can occur when the trailing vortices from the secondary (upstream) rotor interact with the bound vortices of the main (downstream) rotor. Pseudo-steady assumption is invoked, and averaging over multiple relative rotor positions

APA, Harvard, Vancouver, ISO, and other styles

16

Choi, Mingeun, Bonhan Goo, GeonHwan Cho, and Seung Jin Song. "Swirl Enhancement Effect on Turbine Rim Seal Performance." Journal of Turbomachinery, December 7, 2023, 1–23. http://dx.doi.org/10.1115/1.4064230.

Full text

Abstract:

Abstract In gas turbines, sealing flow is extracted from the high-pressure compressor and supplied into the turbine wheel-space to suppress hot gas ingestion. Such hot gas ingestion is thought to be driven by the difference in either the static pressure or swirl between the mainstream and wheel-space flows. For the first time, experiments have been conducted in a low-speed single-stage axial turbine with a single-radial clearance rim seal and a “swirler” on the rotor disk. The objective is to evaluate the impact of enhanced wheel-space flow swirl on the rim seal performance. The swirler does n

APA, Harvard, Vancouver, ISO, and other styles

17

Lavagnoli, S., C. De Maesschalck, and V. Andreoli. "Design Considerations for Tip Clearance Control and Measurement on a Turbine Rainbow Rotor With Multiple Blade Tip Geometries." Journal of Engineering for Gas Turbines and Power 139, no. 4 (2016). http://dx.doi.org/10.1115/1.4034919.

Full text

Abstract:

The accurate design, control, and monitoring of the running gaps between static and moving components are vital to preserve the mechanical integrity and ensure the correct functioning of any compact rotating machinery. Throughout engine service, the rotor tip clearance undergoes large variations due to installation tolerances or as the result of different thermal expansion rates of the blades, rotor disk, and casing during speed transients. Hence, active tip clearance control concepts and engine health-monitoring systems rely on precise real-time gap measurements. Moreover, this tip gap inform

APA, Harvard, Vancouver, ISO, and other styles

18

ГЕРДИ, В. Н., А. С. ФАДЕЕВ, and И. Д. ИВАНОВ. "On the Possibility of Creating an Automatic Multi-Mode Gyrocompass With a Contactless Suspension of the Sensitive Element." Приборы и системы. Управление, контроль, диагностика, no. 6 (June 23, 2021). http://dx.doi.org/10.25791/pribor.6.2021.1266.

Full text

Abstract:

Рассмотрена возможность создания автоматического многорежимного наземного гирокомпаса с бесконтактным подвесом. Предложена схема центрирования чувствительного элемента с помощью маятникового электромагнитного подвеса, ротор которого выполнен в виде вогнутого диска. Такое оригинальное конструкторское решение позволяет при проектировании гирокомпаса, изменяя кривизну поверхности ротора в широких пределах, варьировать его маятниковость, не меняя размеров самого прибора. Радиальное центрирование чувствительного элемента и ограничение его маятниковых колебаний позволяет перейти в режим работы гирос

APA, Harvard, Vancouver, ISO, and other styles

19

Liu, Xiaohua, Tobias Willeke, Florian Herbst, Jun Yang, and Joerg Seume. "A Theory on the Onset of Acoustic Resonance in a Multistage Compressor." Journal of Turbomachinery 140, no. 8 (2018). http://dx.doi.org/10.1115/1.4040551.

Full text

Abstract:

A novel theoretical model of the internal flow field in multistage axial compressors based on an eigenvalue approach is developed, in order to predict the onset of acoustic resonance in aircraft engines. Using an example high-speed four-stage compressor, it is shown that one of the resultant frequencies is in excellent agreement with the experimental data in terms of acoustic resonance. On the basis of the computed natural frequency of the whole compression system and the measured spanwise distribution of static pressure, the location of the acoustic excitation source can be found in the third

APA, Harvard, Vancouver, ISO, and other styles

20

Wu, Yanhui, Qingpeng Li, Jiangtao Tian, and Wuli Chu. "Investigation of Pre-Stall Behavior in an Axial Compressor Rotor—Part I: Unsteadiness of Tip Clearance Flow." Journal of Turbomachinery 134, no. 5 (2012). http://dx.doi.org/10.1115/1.4004752.

Full text

Abstract:

To investigate the pre-stall behavior of an axial flow compressor rotor, which was experimentally observed with spike-type stall inception, systematic experimental and whole-passage simulations were laid out to analyze the internal flow fields in the test rotor. In this part, emphases were put on the analyses of experimental results and the predicted results from steady simulations and unsteady simulations, which converged to equilibrium solutions with nearly periodic fluctuations of efficiency. The objective was to uncover the unsteady behavior of tip clearance flow and its associated flow me

APA, Harvard, Vancouver, ISO, and other styles

21

Grapow, Filip, Krzysztof Olasek, Grzegorz Liśkiewicz, Radomir Magiera, and Władysław Kryłłowicz. "Experimental Study of Vaneless Diffuser Rotating Stall Development and Cell-Merging Phenomena." Journal of Turbomachinery 143, no. 5 (2021). http://dx.doi.org/10.1115/1.4050119.

Full text

Abstract:

Abstract This paper describes the vaneless diffuser rotating stall (VDRS) development and cell-merging phenomena. A centrifugal compressor’s lifespan may be limited by flow instabilities occurring in off-design operation. One such instability is the VDRS, which generates oscillating, asymmetrical flow fields in the diffuser and, thus, undesired forces acting on the rotor. Understanding and prevention of VDRS behavior are crucial for achieving safe and undisturbed compressor operation. Experimental measurements of centrifugal compressors operating under the influence of VDRS have been presented

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!