Relevant bibliographies by topics / Multi-annular seal

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Multi-annular seal'

Author: Grafiati
Published: 28 May 2022
Last updated: 30 July 2025

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

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Multi-annular seal.'

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.

Journal articles on the topic "Multi-annular seal"

1

Moore, J. Jeffrey, and Alan B. Palazzolo. "CFD Comparison to 3D Laser Anemometer and Rotordynamic Force Measurements for Grooved Liquid Annular Seals." Journal of Tribology 121, no. 2 (1999): 306–14. http://dx.doi.org/10.1115/1.2833937.

Full text
Abstract:
A pressure-based computational fluid dynamics (CFD) code is employed to calculate the flow field and rotordynamic forces in a whirling, grooved liquid annular seal. To validate the capabilities of the CFD code for this class of problems, comparisons of basic fluid dynamic parameters are made to three-dimensional laser Doppler anemometer (LDA) measurements for a spinning, centered grooved seal. Predictions are made using both a standard and low Reynolds number κ-ε turbulence model. Comparisons show good overall agreement of the axial and radial velocities in the through flow jet, shear layer, a
APA, Harvard, Vancouver, ISO, and other styles
2

Zhang, Mingjie, Jiangang Yang, Wanfu Zhang, and Qianlei Gu. "Annular seal destabilizing force reduction with circumferential flow suppression using multi-arch teeth." Tribology International 164 (December 2021): 107233. http://dx.doi.org/10.1016/j.triboint.2021.107233.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Iwatsubo, T., and B. C. Sheng. "Evaluation of Seal Effects on the Stability of Rotating Fluid Machinery." International Journal of Rotating Machinery 1, no. 2 (1995): 145–52. http://dx.doi.org/10.1155/s1023621x95000042.

Full text
Abstract:
The stability of typical rotating fluid machinery such as single ahd multi-stage pumps is evaluated by using the finite element method. The individual contribution of the impellers, bearings and seals to the stability and the dynamic interactions of these fluid elements are examined. Various types of bearings and seals, such as annular smooth, parallel grooved and damper seals, are compared for better rotor stability. The effect of the operating conditions on the stability is also investigated. The results show that rotor stability can be easily improved by replacing the unstable fluid element
APA, Harvard, Vancouver, ISO, and other styles
4

Iwatsubo, T., and B. C. Sheng. "Evaluation of Seal Effects on the Stability of Rotating Fluid Machinery." International Journal of Rotating Machinery 2, no. 2 (1995): 85–92. http://dx.doi.org/10.1155/s1023621x95000236.

Full text
Abstract:
The stability of typical rotating fluid machinery such as single and multi-stage pumps is evaluated by using the finite element method. The individual contribution of the impellers, bearings and seals to the stability and the dynamic interactions of these fluid elements are examined. Various types of bearings and seals, such as annular smooth, parallel grooved and damper seals, are compared for better rotor stability. The effect of the operating conditions on the stability is also investigated. The results show that rotor stability can be easily improved by replacing the unstable fluid element
APA, Harvard, Vancouver, ISO, and other styles
5

Stryczek, Stanisław, Andrzej Gonet, Marcin Kremieniewski, and Tomasz Kowalski. "Forecasting Strength Parameters of Hardened Geopolymer Slurries Applied to Seal Casing Columns in Boreholes." Energies 16, no. 11 (2023): 4458. http://dx.doi.org/10.3390/en16114458.

Full text
Abstract:
Ensuring effective sealing of casing columns in boreholes requires the use of the appropriate technology of cement slurry injection into the annular space and the use of a properly designed cement slurry recipe. Very often, when selecting the technological parameters of the cement slurry, special attention is paid to the technological parameters of the fresh cement slurry, but little attention is paid to the mechanical parameters of the cement sheath that is being formed (the cement slurry after setting). In order to improve the parameters of the hardened cement slurry in the annular space, th
APA, Harvard, Vancouver, ISO, and other styles
6

Jiang, Qinglei, Lulu Zhai, Leqin Wang, and Dazhuan Wu. "Fluid-structure interaction analysis of annular seals and rotor systems in multi-stage pumps." Journal of Mechanical Science and Technology 27, no. 7 (2013): 1893–902. http://dx.doi.org/10.1007/s12206-013-0507-y.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

YOKOI, Nobuyasu, Masaya IMAI, Katsuaki KIKUCHI, Toshiki IINO, Michiyuki TAKAGI, and Kenichi KASAI. "Design method of multi-stage centrifugal pump rotor assembly considering hydraulic forces acting on annular seals." Transactions of the Japan Society of Mechanical Engineers Series B 51, no. 465 (1985): 1444–50. http://dx.doi.org/10.1299/kikaib.51.1444.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Pan, Zhipeng, Shijun Xu, Xiang Guan, et al. "Octopus-Inspired Biomimetic Annular Sealing Grooves: Design and Performance Optimization Under Extreme Conditions." Biomimetics 10, no. 5 (2025): 322. https://doi.org/10.3390/biomimetics10050322.

Full text
Abstract:
This study introduces an innovative annular sealing groove design inspired by the hierarchical structure of octopus suckers, addressing the limitations of conventional seals under extreme conditions in aerospace engineering. Using finite element analysis, eight bionic configurations with varying groove parameters (width, depth, number) were systematically evaluated under cryogenic (−196.25 °C) and high-pressure (2 MPa) scenarios. Results show that the optimized bionic6 configuration (seven grooves, 0.4 mm width, 0.4 mm depth) achieved a 21.71% improvement in average von Mises stress compared t
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Yanqin, Jichang Sun, Pengrui Kong, Xiangbin Kong, and Xiaodong Yu. "The dynamic simulation and experiment of bearing capacity of multi oil cushion static bearing with double rectangular cavities." Industrial Lubrication and Tribology 71, no. 9 (2019): 1072–79. http://dx.doi.org/10.1108/ilt-04-2018-0136.

Full text
Abstract:
Purpose The purpose of the paper is to analyze the bearing capacity of hydrostatic bearing during the change of film thickness under different working conditions and to improve the processing efficiency and precision of equipment. Design/methodology/approach In this study, Q1-205 double rectangular cavity hydrostatic thrust bearing is selected as the research object. The dynamic mesh method and ANSYS/FLUENT software are used to simulate the curves of oil film thickness and oil pressure under different operating conditions. Finally, the change of pressure in the oil cavity at different operatin
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Tianhao, Zhigang Li, and Jun Li. "A Wide-Bandwidth And High-Resolution Identification Method For The Dynamic Characteristics Of Annular Gas Seals Using Hilbert Transform." Journal of Engineering for Gas Turbines and Power, September 28, 2024, 1–26. http://dx.doi.org/10.1115/1.4066718.

Full text
Abstract:
Abstract This paper proposed a Hilbert-transform-based time-frequency analysis method to identify the dynamic characteristics of annular gas seals. The frequency-sweep whirling orbit model (FSM) was adopted as the excitation signal of rotor whirling motion. The transient flow field within the seal clearance was numerically simulated by the computational fluid dynamic (CFD) solution combined with the mesh deformation technique. The empirical amplitude-modulated (AM) and frequency-modulated (FM) decomposition and the direct quadrature method were utilized to approximate the analytic signals of t
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Multi-annular seal"

1

Позовний, Олександр Олександрович, Александр Александрович Позовный та Oleksandr Oleksandrovych Pozovnyi. "Вплив багатошпаринних ущільнень на герметичність та вібронадійність відцентрових насосів". Thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86323.

Full text
Abstract:
Дисертаційна робота присвячена розробленню методики розрахунку та вдосконаленню геометрії багатошпаринних ущільнень відцентрових насосів. Наукове обґрунтування та опрацювання методики визначення статичних і динамічних силових характеристик та уточнений розрахунок величини витоків в багатошпаринних ущільненнях дають змогу покращити вже існуючі конструкції та підвищити енергоефективність при забезпеченні допустимо низького рівню вібрацій роторів відцентрових насосів. На основі аналізу літературних джерел встановлено можливість підвищення загального коефіцієнту корисної дії (К.К.Д.) відцентрових
APA, Harvard, Vancouver, ISO, and other styles
2

Grimaldi, Gioacchino. "Prediction models for the dynamical behaviour of multi-phase annular seals." Doctoral thesis, 2018. http://hdl.handle.net/11589/123283.

Full text
Abstract:
Sempre maggior interesse è stato dedicato nelle ultime due decadi nello studio e sviluppo di pompe multifase. Le pompe multifase elaborano miscele di fluidi immiscibili (compressibili e non) ad alte velocità e potenze specifiche per stadio in modo da ridurre dimensioni e costi. Tali peculiarità rendono questo tipo di turbomacchine molto attraenti in settori industriali come l’Oil&Gas, sia per applicazioni sottomarine che in superficie, industria chimica e farmaceutica. Di primaria importanza, in fase di progettazione della macchina, è la valutazione della stabilità rotordinamica della turbomac
APA, Harvard, Vancouver, ISO, and other styles
3

Grimaldi, Gioacchino. "Prediction models for the dynamical behaviour of multi-phase annular seals." Doctoral thesis, 2018. http://hdl.handle.net/11589/192018.

Full text
Abstract:
Increasing interest has been devoted in the last two decades in the study and development of multiphase pumps. Multiphase pumps elaborate mixtures of immiscible fluids (both compressible and not) at high speed and power density per stage in order to reduce size and cost. These peculiarities make this kind of turbomachinery very attractive in different industrial sectors such as Oil&Gas, both for subsea and topside applications, chemical and pharmaceutical industry. Of primary importance, in the machine design phase, is the evaluation of the turbomachinery rotordynamic stability, to ensure
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Multi-annular seal"

1

Flounders, Emer C., and Marshall K. Judges. "Corrosion Condition Evaluation of Reinforced Concrete Tanks in the National Aquarium in Baltimore." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94284.

Full text
Abstract:
Abstract Two oval shaped reinforced concrete tanks built one over the other, exhibited significant concrete damage in addition to cracking. The annular space between the walls of the tanks are filled with man made sea water for marine life habitation. Cracks were observed on the walls and the floor slabs. It was suspected that the cracks may be active and that a change in width would occur over time, allowing access of chloride saturated sea water to the reinforcing steel. A detailed field survey was performed to evaluate the condition of the tanks. Select cracks were monitored to determine wh
APA, Harvard, Vancouver, ISO, and other styles
2

Li, Zhigang, Zhi Fang, Jun Li, and Zhenping Feng. "Numerical Modeling of Static and Rotordynamic Characteristics for Three Types of Helically-Grooved Liquid Annular Seals." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90779.

Full text
Abstract:
Abstract This paper deals with numerical predictions of the leakage flow rates, drag power and rotordynamic force coefficients for three types of helically-grooved liquid annular seals, which include a liquid annular seal with helically-grooved stator (GS/SR seal), one with helically-grooved rotor (SS/GR seal), and one with helical grooves on stator and rotor (GS/GR seal). These seals are frequently used for multiple-stage centrifugal pumps as they have the advantage of low leakage (even to zero) due to the “pumping effect” of the helical grooves. However, the static and rotordynamic character
APA, Harvard, Vancouver, ISO, and other styles
3

Fang, Zhi, Zhigang Li, Jun Li, and Zhenping Feng. "Numerical Investigations on the Static and Rotordynamic Characteristics of Hole-Pattern Seals With Annular or Pocket Grooves on Seal Stator." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90776.

Full text
Abstract:
Abstract Annular damper seals, such as hole-pattern seals, are widely used to control leakage and enhance rotordynamic stability in turbomachinery, especially for the balance-piston seal in the straight-through compressor, and the center seal in the back-to-back compressor. To avoid or minimize negative static stiffness, annular grooves on seal stator have been used to increase direct static stiffness of hole-pattern seals by dividing one long seal to several shorter seal sections. However, few literatures are available for understanding the influences of annular grooves on seal static and rot
APA, Harvard, Vancouver, ISO, and other styles
4

Li, Zhigang, Zhi Fang, and Jun Li. "Numerical Investigation on the Leakage and Rotordynamic Characteristics for Three Types of Annular Gas Seals in Wet Gas Conditions." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75150.

Full text
Abstract:
The modern compressor operation is challenged by the liquid presence in wet gas operating conditions. The liquid phase may affect the compressor stability by partially flooding the internal annular gas seals and inducing subsynchronous vibration. To improve the annular seal behavior and increase rotor stability, high-precision results of leakage flow rates and rotordynamic force coefficients are needed for annular gas seals in wet gas conditions. In order to better understand the leakage and rotordynamic characteristics of the annular gas seal in wet gas conditions, a 3D transient CFD-based pe
APA, Harvard, Vancouver, ISO, and other styles
5

Pugachev, Alexander O. "CFD Optimization of Liquid Annular Seals for Leakage and Rotordynamics Improvement." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59173.

Full text
Abstract:
The study deals with optimization of leakage and rotordynamic characteristics of liquid annular seals. A nonlinear constrained multi-objective optimization problem is considered. An objective function is a weighted sum of leakage and whirl-frequency ratio of the seal. Side constraints are imposed on design variables. The seal consists of two rings which shape can be either cylinder or converging taper or diverging taper. There are four design variables — seal length and diameters of the rings. A non-gradient-based method is used for solving the optimization problem. Analysis of the seal perfor
APA, Harvard, Vancouver, ISO, and other styles
6

Jin, Hanxiang, and Alexandrina Untaroiu. "Leakage Rate Performance Mapping of Smooth Stator/Grooved Rotor Labyrinth Seals Using Statistical Tools." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5429.

Full text
Abstract:
Abstract As one of the most widely used annular pressure seals, labyrinth seals are used to reduce the fluid leakage between different pressure stages. They are multi-toothed seals with circumferential grooves located on the rotor surfaces and/or stator surfaces, which are distributed along the axial direction. The intricacy of the surface geometry and directionality of the seal pattern assist in converting pressure into dissipated kinetic energy without rotor-stator rub effects. The majority of previous studies focused on annular labyrinth liquid seals with smooth rotor/grooved stator (SR/GS)
APA, Harvard, Vancouver, ISO, and other styles
7

Iwatsubo, T., and B. C. Sheng. "Stability Analysis of Turbomachinery From the Viewpoint of Seal." In ASME 1991 Design Technical Conferences. American Society of Mechanical Engineers, 1991. http://dx.doi.org/10.1115/detc1991-0340.

Full text
Abstract:
Abstract The stability of the typical rotating fluid machineries such as the single-stage and multi-stage pumps which consist of impellers, bearings and noncontacting seals is evaluated from the viewpoint of seals. The individual contribution of the impeller, bearing as well as seal to the stability, and the dynamic interactions of these fluid elements are investigated. In the investigation, some types of bearings, and seals such as annular smooth seals, parallel grooved seals and damper seals are compared to seek the better ones for the rotor stability. The effect of working conditions on the
APA, Harvard, Vancouver, ISO, and other styles
8

Wang, Tianhao, Zhigang Li, and Jun Li. "A Wide-Bandwidth and High-Resolution Identification Method for the Dynamic Characteristics of Annular Gas Seals Using Hilbert Transform." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-126191.

Full text
Abstract:
Abstract Efficient and accurate parameter identification methods are urgently needed to develop high-performance sealing devices. Although the existing prediction methods have been widely validated, researchers are still grappling with the trade-off between frequency resolution and computational cost. This paper proposed a Hilbert-transform-based time-frequency analysis method to identify the dynamic characteristics of annular gas seals. The frequency-sweep whirling orbit model (FSM) was adopted as the excitation signal of rotor whirling motion. The transient flow field within the seal clearan
APA, Harvard, Vancouver, ISO, and other styles
9

Fang, Zhi, Zhigang Li, Jun Li, and Zhenping Feng. "Static and Rotordynamic Characteristics for Two Novel Hole-Pattern Annular Liquid Seals With Circumferentially- /Axially- Oblique Hole Cavities." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-58996.

Full text
Abstract:
Abstract Non-contacting annular damper seals, such as hole-pattern seals are gradually used in the multiple-stage centrifugal pumps, as a replacement of the conventional labyrinth seal to reduce the fluid leakage and stabilize the rotor-bearing system.The hole-pattern seal (HPS) possesses numerous radial hole cavities on the seal stator, and the geometric constructions of the hole cavity (such as the hole depth and diameter) have been demonstrated to have significant influences on the leakage and rotordynamic characteristic for hole-pattern seals. Due to the inevitable manufacturing variabilit
APA, Harvard, Vancouver, ISO, and other styles
10

Paudel, Wisher, Cori Watson, and Houston G. Wood. "Mixed Helical Labyrinth Groove Seal Optimization Using Computational Fluid Dynamics." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-63136.

Full text
Abstract:
Non-contacting annular seals are used in rotating machinery to reduce the flow of fluid across a pressure differential. Helical and labyrinth groove seals are two types of non-contacting annular seals frequently used between the impeller stages in a pump. Labyrinth seals have circumferential grooves cut into the surface of the rotor, the stator, or both. They function to reduce leakage by dissipating kinetic energy as fluid expands in the grooves and then is forced to contract in the jet stream region. Helical groove seals have continuously cut grooves in either or both of the rotor and stator
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!

To the bibliography