Log in

Relevant bibliographies by topics / Multi-Stage Bladed Disks Dynamics / Journal articles

To see the other types of publications on this topic, follow the link: Multi-Stage Bladed Disks Dynamics.

Journal articles on the topic 'Multi-Stage Bladed Disks Dynamics'

Author: Grafiati

Published: 14 March 2023

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 32 journal articles for your research on the topic 'Multi-Stage Bladed Disks Dynamics.'

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

Wagner, L. F., and J. H. Griffin. "Blade Vibration With Nonlinear Tip Constraint: Model Development." Journal of Turbomachinery 112, no. 4 (1990): 778–85. http://dx.doi.org/10.1115/1.2927721.

Full text

Abstract:

Turbine blades having integrally machined tip shrouds, with associated gaps between adjacent shrouds, often exhibit unusual vibratory responses with significant differences between the amplitudes and frequencies of individual blades on the same stage. These differences result from unavoidable variations in the shroud gaps causing, for large enough excitation, nonlinear constraint at the blade tips which varies from blade to blade. This study shows that the blade stresses cannot be adequately represented by the type of single-degree-of-freedom models that are often used for dynamic impact studi

APA, Harvard, Vancouver, ISO, and other styles

2

Laxalde, Denis, Jean-Pierre Lombard, and Fabrice Thouverez. "Dynamics of Multistage Bladed Disks Systems." Journal of Engineering for Gas Turbines and Power 129, no. 4 (2007): 1058–64. http://dx.doi.org/10.1115/1.2747641.

Full text

Abstract:

This paper presents a new and original method for dynamical analysis of multistage cyclic structures such as turbomachinery compressors or turbines. Each stage is modeled cyclically by its elementary sector and the interstage coupling is achieved through a cyclic recombination of the interface degrees of freedom. This method is quite simple to set up; it allows us to handle the finite element models of each stage’s sector directly and, as in classical cyclic symmetry analysis, to study the nodal diameter problems separately. The method is first validated on a simple case study which shows good

APA, Harvard, Vancouver, ISO, and other styles

3

Bladh, R., M. P. Castanier, and C. Pierre. "Effects of Multistage Coupling and Disk Flexibility on Mistuned Bladed Disk Dynamics." Journal of Engineering for Gas Turbines and Power 125, no. 1 (2002): 121–30. http://dx.doi.org/10.1115/1.1498267.

Full text

Abstract:

The effects of disk flexibility and multistage coupling on the dynamics of bladed disks with and without blade mistuning are investigated. Both free and forced responses are examined using finite element representations of example single and two-stage rotor models. The reported work demonstrates the importance of proper treatment of interstage (stage-to-stage) boundaries in order to yield adequate capture of disk-blade modal interaction in eigenfrequency veering regions. The modified disk-blade modal interactions resulting from interstage-coupling-induced changes in disk flexibility are found

APA, Harvard, Vancouver, ISO, and other styles

4

Laxalde, Denis, and Christophe Pierre. "Modelling and analysis of multi-stage systems of mistuned bladed disks." Computers & Structures 89, no. 3-4 (2011): 316–24. http://dx.doi.org/10.1016/j.compstruc.2010.10.020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Repetckii, Oleg, and Van Vinh Nguyen. "DYNAMIC CHARACTERISTICS ANALYSIS OF BLADED DISK TURBOMACHINES BASED ON INTENTIONAL MISTUNING." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 62 (2020): 61–70. http://dx.doi.org/10.15593/2224-9982/2020.62.07.

Full text

Abstract:

To increase technical level of energy turbomachine in modern turbomachinery, high reliability and durability of structures are required in the design, manufacture and operation of turbomachine. Any change geometry, mass, material properties of the bladed disk of turbomachine in the design is called mistuning parameters. With a small value of mistuning blades can significantly increase amplitude, displacement or stresses of the blades structures. So, analysis influence of the effect mistuning parameters on the dynamic characteristics in the field of turbomachine is an important and urgent task.

APA, Harvard, Vancouver, ISO, and other styles

6

Grzejszczak-Pączek, Olga, and Adam Kozakiewicz. "FSI Application in the Parametric Analysis of Blade–Disk Connection of Turbojet Engine Compressor." Applied Sciences 13, no. 19 (2023): 10960. http://dx.doi.org/10.3390/app131910960.

Full text

Abstract:

The following paper evaluates the strength properties of the critical area of the turbine rotor stage of a jet engine. This is where the blade is attached to the rotor disk. Important aspects of this issue are characteristic geometrical dimensions and operating factors, e.g., changes in rotor speed. In the article, the strength properties of the rotor stage with a trapezoidal blade–disk connection were analyzed using parametric analysis considering fluid–structure interaction (FSI). Virtual models of the compressor rotor stages were developed, including parametric blade–disk connections and di

APA, Harvard, Vancouver, ISO, and other styles

7

Brinkmann, Katharina, Thomas Hoffmann, Lars Panning-von Scheidt, and Heinrich Stüer. "Transient Resonance Passage of a Mistuned Bladed Disk with and without Underplatform Dampers." International Journal of Turbomachinery, Propulsion and Power 8, no. 4 (2023): 38. http://dx.doi.org/10.3390/ijtpp8040038.

Full text

Abstract:

In this work, the vibration response of an academic free-standing turbine blisk is analyzed in regard to transient resonance passages. Measurement data are recorded using strain gauges and tip timing to evaluate the blades first bending mode both linearly and with two different types of underplatform dampers. These results are validated against steady-state responses and show good agreement with each other. To examine the effects of a transient resonance passage, response functions of each blade are evaluated both with and without the underplatform dampers. It is shown that friction damping is

APA, Harvard, Vancouver, ISO, and other styles

8

Ran, Liaoyuan, Dunant Halim, Chung Ket Thein, and Michael Galea. "Vibration Control of a Multi-Disc Rotor System with Active Lateral Bearings and Disturbance Estimation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 5 (2023): 3935–42. http://dx.doi.org/10.3397/in_2023_0562.

Full text

Abstract:

A rotor system used in a wide range of engineering applications generally consists of a rotor shaft, multiple discs, blades and other essential components, generating a multi-disc rotor arrangement. System uncertainties caused by unbalanced discs and disc mass variation, compounded with external disturbances under different operating conditions, can lead to a variation in rotor-dynamic characteristics with multiple structural resonances, potentially causing an excessive level of rotor lateral vibration. Therefore, to effectively suppress lateral vibration for such a multi-disc rotor system, an

APA, Harvard, Vancouver, ISO, and other styles

9

Belhanafi, Abdelghani, Zied Driss, and Mohamed Salah Abid. "Hydrodynamic Comparative Study on the Pumping Effects of a Square Tank Equipped with Single-Stage and Bi-Stage Impellers." Acta Universitatis Sapientiae, Electrical and Mechanical Engineering 14, no. 1 (2022): 1–12. http://dx.doi.org/10.2478/auseme-2022-0001.

Full text

Abstract:

Abstract A computational fluid dynamics simulation is done for comparative study from the pumping effect on the four surfaces of the stirred tank. The flow field generated by one-stage and bi-stage six-bladed Rushton turbine in the unbaffled square tank was studied. The Reynolds-averaged Navier-Stokes equation with steady-state multi-reference frame approach (MRF) is used to simulate hydrodynamic flow in the tank. The turbulent viscosity, the turbulent kinetic energy and mean velocity distributions obtained in vertical and horizontal plans are analyzed and discussed. We can deduce that the add

APA, Harvard, Vancouver, ISO, and other styles

10

Shengxi, Jia, Zheng Longxi, Jingjing Huang, and Qing Mei. "Dynamic Characteristics Analysis and Optimization Design of a Simulated Power Turbine Rotor Based on Finite Element Method." International Journal of Turbo & Jet-Engines 37, no. 1 (2020): 31–39. http://dx.doi.org/10.1515/tjj-2017-0006.

Full text

Abstract:

AbstractThe vibration optimum design for a simulated power turbine rotor without blades on the disk by using an optimization method based on the finite element method is described in this paper. The installation position of the two-stage turbine disks is chosen as design variables under the constraints of feasible regions for the critical speeds of the rotor. The objective functions are to minimize the transient response of the acceleration at the bearings and the amplitude of the disks. Predictions of the dynamic characteristics of the rotor are obtained by using ANSYS code. The optimization

APA, Harvard, Vancouver, ISO, and other styles

11

Madina, Isametova, Karaivanov Dimitar, and Nussipali Rollan. "DETERMINATION OF THE RATIONAL NUMBER OF BLADES OF THE CENTRIFUGAL WHEEL OF A SUBMERSIBLE PUMP." Eastern-European Journal of Enterprise Technologies 2, no. 7 (104) (2020): 49–58. https://doi.org/10.15587/1729-4061.2020.200998.

Full text

Abstract:

The CAD/CAE/CAM method of end-to-end design of the impeller of a seven-stage submersible pump ODDESSEzentralasien –UPP 13-7/6 used for pumping sulfuric acid in hydrometallurgy is presented. The studies are conducted in order to increase the efficiency of the pump manufactured at the KARLSKRONA LC AB LLP plant (Kazakhstan). Computer calculations of the centrifugal wheel with 8 and 9 blades for strength were carried out in the NASTRAN top-level CAE system. The influence of the number of centrifugal wheel blades on the level of stresses arising in the sections of the blades of the cover and

APA, Harvard, Vancouver, ISO, and other styles

12

Lecomte, Christophe. "Zero and root loci of disturbed spring–mass systems." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, no. 2164 (2014): 20130751. http://dx.doi.org/10.1098/rspa.2013.0751.

Full text

Abstract:

Models consisting of chains of particles that are coupled to their neighbours appear in many applications in physics or engineering, such as in the study of dynamics of mono-atomic and multi-atomic lattices, the resonances of crystals with impurities and the response of damaged bladed discs. Analytical properties of the dynamic responses of such disturbed chains of identical springs and masses are presented, including when damping is present. Several remarkable properties in the location of the resonances (poles) and anti-resonances (zeros) of the displacements in the frequency domain are pres

APA, Harvard, Vancouver, ISO, and other styles

13

Wang, T., and J. V. Taylor. "Half-scale transonic compressor rapid testing rig." Journal of Physics: Conference Series 2511, no. 1 (2023): 012007. http://dx.doi.org/10.1088/1742-6596/2511/1/012007.

Full text

Abstract:

Abstract High-speed compressor testing is costly due to mechanical complexity and hazardous due to the high energy involved. In the past this has limited the speed and amount of testing. In this paper a new rig architecture is presented that aims to test a scaled transonic compressor stage rapidly. It builds upon the low-speed rapid testing developments made at the Whittle Laboratory and has potential to accelerate technology development. The power input requirement is reduced by testing at half-scale and reduced Reynolds number while maintaining the Mach number. Further power saving and mecha

APA, Harvard, Vancouver, ISO, and other styles

14

Зверев, И. А., and В. А. Александров. "Stresses of the power plant of a feller buncher during operation of a feller head with a disk saw." Известия СПбЛТА, no. 246 (December 27, 2023): 311–19. http://dx.doi.org/10.21266/2079-4304.2023.246.311-319.

Full text

Abstract:

В статье рассматривается динамическая нагруженность силовой установки валочно-пакетирующей машины, оснащенной захватно-срезающим устройством с дисковым режущим органом, в процессе разгона пильного диска. Разработана математическая модель, позволяющая на этапе проектирования валочно- пакетирующей машины, определить величину добавочного динамического момента, действующего на силовую установку машины. Математическое описание составлено в форме уравнения Лагранжа 2-го рода. Приведен пример расчета математической модели для валочно-пакетирующей машины ЛП-19Ф, оснащенной захватно-срезающим устройств

APA, Harvard, Vancouver, ISO, and other styles

15

Hänni, Dominic, Rainer Schädler, Reza Abhari, et al. "Purge flow effects on rotor hub endwall heat transfer with extended endwall contouring into the disk cavity." Journal of the Global Power and Propulsion Society 3 (May 13, 2019): 555–68. http://dx.doi.org/10.33737/jgpps/109838.

Full text

Abstract:

Efficiency improvements for gas turbines are strongly coupled with increasing turbine inlet temperatures. This imposes new challenges for designers for efficient and adequate cooling of turbine components. Modern gas turbines inject bleed air from the compressor into the stator/rotor rim seal cavity to prevent hot gas ingestion from the main flow, while cooling the rotor disk. The purge flow interacts with the main flow field and static pressure field imposed by the turbine blades. This complex interaction causes non-uniform and jet-like penetration of the purge flow into the main flow field,

APA, Harvard, Vancouver, ISO, and other styles

16

Venuti, L., L. Prisinzano, G. G. Sacco, et al. "The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264." Astronomy & Astrophysics 609 (December 22, 2017): A10. http://dx.doi.org/10.1051/0004-6361/201731103.

Full text

Abstract:

Context. Reconstructing the structure and history of young clusters is pivotal to understanding the mechanisms and timescales of early stellar evolution and planet formation. Recent studies suggest that star clusters often exhibit a hierarchical structure, possibly resulting from several star formation episodes occurring sequentially rather than a monolithic cloud collapse. Aims. We aim to explore the structure of the open cluster and star-forming region NGC 2264 (~3 Myr), which is one of the youngest, richest and most accessible star clusters in the local spiral arm of our Galaxy; we link the

APA, Harvard, Vancouver, ISO, and other styles

17

Иванов, А. Г., А. В. Костин, Ф. Р. Арсланов, А. А. Ломаев та К. Л. Воронцов. "ДИНАМИКА ДВИЖЕНИЯ КЛУБНЕЙ ПО РАБОЧИМ ОРГАНАМ ДИСКОВОГО ВОРОХООЧИСТИТЕЛЯ". Bulletin of Izhevsk State Agricultural Academy, № 1(81) (11 квітня 2025): 155–62. https://doi.org/10.48012/1817-5457_2025_1_155-162.

Full text

Abstract:

Возделывание картофеля является сложным многоэтапным процессом, важную роль в котором выполняет доработка картофеля перед закладкой на хранение. Доработка включает в себя приемку вороха, распределение его, очистку от почвенных и растительных примесей. Удаление некондиционных клубней, калибрование на фракции по размерам и размещение товарного картофеля в бункерах на хранение. В работе делается упор на выделение из вороха почвенных примесей. Для этой цели предложен разработанный авторским коллективом дисковый ворохоочиститель. Он имеет простую и компактную конструкцию, содержащую раму и три вала

APA, Harvard, Vancouver, ISO, and other styles

18

Petrov, Evgeny, Luca Di Mare, Holger Hennings, and Robert Elliott. "Forced Response of Mistuned Bladed Disks in Gas Flow: A Comparative Study of Predictions and Full-Scale Experimental Results." Journal of Engineering for Gas Turbines and Power 132, no. 5 (2010). http://dx.doi.org/10.1115/1.3205031.

Full text

Abstract:

An integrated experimental-numerical study of forced response for a mistuned bladed disk has been performed. A full chain for the predictive forced response analysis has been developed including data exchange between the computational fluid dynamics code and a code for the prediction of the nonlinear forced response for a bladed disk. The experimental measurements are performed at a full-scale single stage test rig with excitation by aerodynamic forces from gas flow. The numerical modeling approaches and the test rig setup are discussed. Comparison of experimentally measured and predicted valu

APA, Harvard, Vancouver, ISO, and other styles

19

Gross, Johann, and Malte Krack. "Multi-Wave Vibration Caused by Flutter Instability and Nonlinear Tip-Shroud Friction." Journal of Engineering for Gas Turbines and Power 142, no. 2 (2020). http://dx.doi.org/10.1115/1.4044884.

Full text

Abstract:

Abstract Measurements revealed the contribution of multiple traveling waves to the flutter vibrations of bladed disks. Saturated flutter vibration, whether in this multi-wave or in its better-understood single-wave form, is a nonlinear phenomenon. However, it is still not understood of what physical origin the relevant nonlinearities are, and under what conditions single-wave or multi-wave flutter vibration occurs. Recent theoretical work suggests that multi-wave flutter vibration can be explained by strongly nonlinear frictional interblade coupling. The verity of this hypothesis is strictly l

APA, Harvard, Vancouver, ISO, and other styles

20

Kurstak, Eric, and Kiran D'Souza. "A Statistical Characterization of the Effects and Interactions of Small and Large Mistuning on Multistage Bladed Disks." Journal of Engineering for Gas Turbines and Power 142, no. 4 (2020). http://dx.doi.org/10.1115/1.4045023.

Full text

Abstract:

Abstract As turbomachinery systems continue to push the limits of modern technology, the modeling techniques being developed also continue to push modern computational limits. While modeling the pristine system during the design process is important, it is equally important to model behavior of mistuned systems, due to wear or manufacturing processes. This work carries out a statistical analysis on a two-stage system consisting of integrally bladed rotors. Various forms of large geometric mistuning, such as missing mass, bends, and dents, are considered. These forms of large mistuning are base

APA, Harvard, Vancouver, ISO, and other styles

21

Kan, Xuanen, and Bo Zhao. "Dynamic characteristics of the multi-packet blade system excited by nozzle wake considering effect of blade rotation with complex operating conditions." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, June 6, 2025. https://doi.org/10.1177/09544100251349779.

Full text

Abstract:

Multi-packets whole bladed disks due to excellent functions are used in some turbo-machineries. The dynamic characteristics are more complicated of multi-packets bladed disk compared with general bladed disk systems without bladed packets. The aim of this paper is to investigate the dynamic behaviors of multi-packets system excited by nozzle wake excitation due to partial admission. In order to improve efficiency, an improved three-dimensional finite element model considering effect of blade rotation is developed based on the improved component mode synthesis and cyclic symmetrical properties

APA, Harvard, Vancouver, ISO, and other styles

22

Zhang, Hongyuan, Haiyu Feng, Xiaomei You, and Tianyu Zhao. "Vibration characteristics of mistuned multistage bladed disks of the aero-engine compressor." Journal of Vibroengineering, July 7, 2022. http://dx.doi.org/10.21595/jve.2022.22402.

Full text

Abstract:

In order to analyze the vibration characteristics of mistuned multistage bladed disks of an aero-engine compressor, a finite element reduction model of mistuned multistage bladed disks is established based on substructure modal synthesis method. The accuracy of the substructure model was verified by comparing calculation accuracy of the substructure model and the integral model. The influence of different modal truncation numbers on the calculation results are discussed. The vibration modes of each stage of the bladed disks are obtained, the forced response is analyzed from the perspective of

APA, Harvard, Vancouver, ISO, and other styles

23

Joachim, Jeanne, Florence Nyssen, and Alain Batailly. "Numerical Investigation of a Mistuned Academic Bladed Disk Dynamics with Blade/Casing Contact." Journal of Engineering for Gas Turbines and Power, July 13, 2020. http://dx.doi.org/10.1115/1.4047780.

Full text

Abstract:

Abstract This contribution focuses on the combined analysis of mistuning and unilateral blade-tip/casing contacts. A 2D phenomenological finite element model of an aircraft engine fan stage is considered. It is reduced by means of the Craig-Bampton component mode synthesis method and contact treatment relies on a Lagrange multiplier algorithm within an explicit time-integration scheme. Blade-tip/casing contacts are initiated through the deformed shape of a perfectly rigid casing. Mistuning is accounted for on the blades only. Monte Carlo simulations are carried out in both linear and nonlinear

APA, Harvard, Vancouver, ISO, and other styles

24

Dekker, Hasse N. J., Woutijn J. Baars, Fulvio Scarano, Marthijn Tuinstra, and Daniele Ragni. "Unsteady flow behaviour of multi-rotors in ground proximity." Flow 3 (2023). http://dx.doi.org/10.1017/flo.2023.21.

Full text

Abstract:

The unsteady flow behaviour of two side-by-side rotors in ground proximity is experimentally investigated. The rotors induce a velocity distribution interacting with the ground causing the radial expansion of the rotor wakes. In between the rotors, an interaction of the two wakes takes place, resulting in an upward flow similar to a fountain. Two types of flow topologies are examined and correspond to two different stand-off heights between the rotors and the ground: the first one where the height of the fountain remains below the rotor disks, and a second one where it emerges above, being re-

APA, Harvard, Vancouver, ISO, and other styles

25

Khalid, Muhammad Saif Ullah, Priscila Scarlet Portocarrero Mendoza, David Wood, and Arman Hemmati. "On the aerodynamics of dual-stage co-axial vertical-axis wind turbines." Wind Engineering, December 9, 2023. http://dx.doi.org/10.1177/0309524x231212638.

Full text

Abstract:

This study explored the aerodynamics of a new multi-stage co-axial vertical-axis wind turbine based on bio-inspiration from natural swimming habit of fish. The turbine was formed from a conventional straight-bladed vertical axis turbine (VAWT) with an additional small inner rotor, also of three blades. The azimuthal and radial locations of the inner rotor were varied. Using numerical simulations, performance of the proposed new design was evaluated over a range of tip-speed ratios. The preliminary results identified a 600% increase in power output for multi-stage VAWTs at tip-speed ratios [For

APA, Harvard, Vancouver, ISO, and other styles

26

J.S. Rao. "Rotor Dynamics of Aircraft Gas Turbine Engines." Journal of Aerospace Sciences and Technologies, August 10, 2023, 169–82. http://dx.doi.org/10.61653/joast.v60i3.2008.653.

Full text

Abstract:

Ever since Sir Frank Whittle built the first jet engine for aircraft propulsion, rotor dynamics became the key issue in design and continues to be most vexing problem for the designers. The rotors are gradually replaced by drum construction and the bearing supports have become very flexible owing to thin engine casings mounted on the wings. The compressor and turbine rotors are no more coupled serially through couplings as in steam turbines but are mounted one over other as spools. Now, there are several critical speeds of multi spools excited by unbalances and misalignment. The disks mounted

APA, Harvard, Vancouver, ISO, and other styles

27

Carvalho Figueiredo, A. J., B. D. J. Schreiner, A. W. Mesny, et al. "Volumetric Velocimetry Measurements of Purge–Mainstream Interaction in a One-Stage Turbine." Journal of Turbomachinery 143, no. 4 (2021). http://dx.doi.org/10.1115/1.4050072.

Full text

Abstract:

Abstract Air-cooled gas turbines employ bleed air from the compressor to cool vulnerable components in the turbine. The cooling flow, commonly known as purge air, is introduced at low radius, before exiting through the rim-seal at the periphery of the turbine discs. The purge flow interacts with the mainstream gas path, creating an unsteady and complex flowfield. Of particular interest to the designer is the effect of purge on the secondary-flow structures within the blade passage, the extent of which directly affects the aerodynamic loss in the stage. This paper presents a combined experiment

APA, Harvard, Vancouver, ISO, and other styles

28

Scobie, James A., Fabian P. Hualca, Marios Patinios, Carl M. Sangan, J. Michael Owen, and Gary D. Lock. "Re-Ingestion of Upstream Egress in a 1.5-Stage Gas Turbine Rig." Journal of Engineering for Gas Turbines and Power 140, no. 7 (2018). http://dx.doi.org/10.1115/1.4038361.

Full text

Abstract:

In gas turbines, rim seals are fitted at the periphery of stator and rotor discs to minimize the purge flow required to seal the wheel-space between the discs. Ingestion (or ingress) of hot mainstream gases through rim seals is a threat to the operating life and integrity of highly stressed components, particularly in the first-stage turbine. Egress of sealing flow from the first-stage can be re-ingested in downstream stages. This paper presents experimental results using a 1.5-stage test facility designed to investigate ingress into the wheel-spaces upstream and downstream of a rotor disk. Re

APA, Harvard, Vancouver, ISO, and other styles

29

Mirzamoghadam, A. V., S. Kanjiyani, A. Riahi, Reddaiah Vishnumolakala, and Lavan Gundeti. "Unsteady 360 Computational Fluid Dynamics Validation of a Turbine Stage Mainstream/Disk Cavity Interaction." Journal of Turbomachinery 137, no. 1 (2014). http://dx.doi.org/10.1115/1.4028248.

Full text

Abstract:

The amount of cooling air assigned to seal high pressure turbine (HPT) rim cavities is critical for performance as well as component life. Insufficient air leads to excessive hot annulus gas ingestion and its penetration deep into the cavity compromising disk or cover plate life. Excessive purge air, on the other hand, adversely affects performance. Experiments on a rotating turbine stage rig which included a rotor–stator forward disk cavity were performed at Arizona State University (ASU). The turbine rig has 22 vanes and 28 blades, while the cavity is composed of a single-tooth lab seal and

APA, Harvard, Vancouver, ISO, and other styles

30

Gossard, Daniel J. "Syncopation and synchrony: Phenological dynamics of Pyropia nereocystis (Bangiophyceae) in central California." Journal of Phycology, March 29, 2024. http://dx.doi.org/10.1111/jpy.13448.

Full text

Abstract:

AbstractPyropia nereocystis is an annual northeastern Pacific‐bladed bangialean species whose macroscopic stage epiphytized the annual canopy forming bull kelp Nereocystis luetkeana. I examined three in situ facets of these epiphyte‐host dynamics in the central California region: (1) spatial and temporal variation in the presence of P. nereocystis epiphytes as a function of host density, (2) the relationship between individual host morphology and epiphytic P. nereocystis biomass, and (3) the ecophysiological growth ramifications for subtidal transplants of both life stages of P. nereocystis. S

APA, Harvard, Vancouver, ISO, and other styles

31

Lejeune, Maxime, Maud Moens, and Philippe Chatelain. "A Meandering-Capturing Wake Model Coupled to Rotor-Based Flow-Sensing for Operational Wind Farm Flow Prediction." Frontiers in Energy Research 10 (July 8, 2022). http://dx.doi.org/10.3389/fenrg.2022.884068.

Full text

Abstract:

The development of new wake models is currently one of the key approaches envisioned to further improve the levelized cost of energy of wind power. While the wind energy literature abounds with operational wake models capable of predicting in fast-time the behavior of a wind turbine wake based on the measurements available (e.g., SCADA), only few account for dynamic wake effects. The present work capitalizes on the success gathered by the Dynamic Wake Meandering formulation and introduces a new operational dynamic wake modeling framework aimed at capturing the wake dynamic signature at a low c

APA, Harvard, Vancouver, ISO, and other styles

32

Virazels, T., S. Lister, O. Levano-Blanch, M. Jackson, J. A. Rodríguez-Martínez, and J. C. Nieto-Fuentes. "High-velocity fragmentation of titanium alloy rings and cylinders produced using Field-Assisted Sintering Technology." International Journal of Fracture 250, no. 1 (2025). https://doi.org/10.1007/s10704-024-00829-9.

Full text

Abstract:

Abstract This paper explores the mechanics of high-velocity impact fragmentation in titanium alloys produced by Field-Assisted Sintering Technology. For that purpose, we have utilized the experimental setups recently developed by Nieto-Fuentes et al. (J Mech Phys Solids 174:105248, 2023a; Int J Impact Eng 180:104556, 2023b) for conducting dynamic expansion tests on rings and cylinders. The experiments involve firing a conical-nosed cylindrical projectile using a single-stage ight-gas gun against the stationary ring/cylinder at velocities ranging from $$\approx 248~\text {m}/\text {s}$$ ≈ 248 m

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!