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Tuesday, April 21, 2020 | History

3 edition of Analysis of two-phase flow in damper seals for cryogenic turbomachinery found in the catalog.

Analysis of two-phase flow in damper seals for cryogenic turbomachinery

Analysis of two-phase flow in damper seals for cryogenic turbomachinery

NASA grant NAG3-1434 : final report to NASA Lewis Research Center

by

  • 165 Want to read
  • 39 Currently reading

Published by Texas A&M University, Mechanical Engineering Dept., National Aeronautics and Space Administration, National Technical Information Service, distributor in [College Station, Tex.], [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Seals (Stoppers),
  • Fluid pressure.,
  • Leakage.,
  • Pressure distribution.,
  • Rotor dynamics.,
  • Turbomachinery.,
  • Two phase flow.,
  • Liquid-vapor interfaces.

  • Edition Notes

    Other titlesAnalysis of two phase flow in damper seals for cryogenic turbomachinery.
    Statementby Grigory L. Arauz ; principal investigator, Luis San Andres.
    Series[NASA contractor report] -- NASA-CR-202662.
    ContributionsSan Andres, Luis., Texas A & M University. Dept. of Mechanical Engineering., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18122158M

    Free essays, homework help, flashcards, research papers, book reports, term papers, history, science, politics. as PDF Technische Universität München Department of Mechanical Engineering Mechanical Engineering Annual Report Imprint Technische Universität München Department of Mechanical Engineering Boltzmannstraße 15 Garching near Munich Germany Editor: Prof. Dr. Tim C. Lüth, Dean Sub-editor: Dr. Till v. This document has been archived Title: NSF Engineering Directorate Directory of Awards Type: Dir of Awards NSF Org: ENG Date: File: nsf National Science.


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Analysis of two-phase flow in damper seals for cryogenic turbomachinery Download PDF EPUB FB2

Analysis of Two-Phase Flow in Cryogenic Damper Seals—Part II: Model Validation and Predictions Grigory L.

Arauz Mechanical Engineering Department, Texas A&M University, College Station, TX Cited by: 7. (Phase III) ANALYSIS OF TWO-PHASE FLOW IN DAMPER SEALS FOR CRYOGENIC TURBOMACHINERY A Dissertation by GRIGORY L. ARAUZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY May Major Subject: Mechanical Engineering ABSTRACT Analysis of Two-Phase.

Arauz, G., and San Andres, L.,“Analysis of Two-Phase Flow in Cryogenic Damper Seals. Part II: Model Validation and Predictions,” ASME JOURNAL OF TRIBOLOGY, published in this issue pp. –Cited by: Get this from a library. Analysis of two-phase flow in damper seals for cryogenic turbopumps: NASA grant NAG final report to NASA Lewis Research Center.

[Grigory L Arauz; Luis San Andres; Texas A & M University. Department of Mechanical Engineering.; United States. National Aeronautics and Space Administration.]. the book,Turbomachinery Rotordynamics. He is currently carrying out tests on honeycomb and hole-pattern gas damper seals for a member industrial consortium.

He was named an ASME Fellow Member inand received ASMEs Henry R. Worthington Medal in for contributions to pumping machinery.

The paper presents theoretical investigations that deal with the steady state mass flow rate, labyrinth seal-influence coefficients, and unbalance response of a cryogenic turbo-pump.

Download Citation | Lock-up characteristics of floating ring seals considering rotor whirling motion | This paper presents a lock-up condition with rotor whirling motion to predict the lock-up. When the gas turbine engines (GTE) NK were developed for liquid hydrogen and NK for liquefied natural gas, performance of the systems with a turbo-pump unitary was improved and its proved without direct regulation of the flow of a cryogenic fuel, which was supplied by a centrifugal pump of the turbo-pump unit (TPU) Command from the.

Compressors with horizontal split casings as shown in Fig. are used in relatively low-pressure applications having a pressure limitation of roughly 7 MPa that is governed mostly by the ability to seal the split line against leakage.

These horizontal split casing designs may also be described as “axially split.” The horizontal split of the casing is flat and bolted around the periphery. The Dynamic Characteristic Analysis of Elastic Ring Squeeze Film Damper by Fluid-Structure Interaction Approach. A Computational Fluid Dynamics Modified Bulk Flow Analysis for Circumferentially Shallow Grooved Liquid Seals Experimental Study of the Static and Dynamic Characteristics of a Long Smooth Seal With Two-Phase, Mainly-Air.

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The air-oil, two-phase flow inside the multiple-point, oil-jet lubrication ball bearing was studied based on CFD (computational fluid dynamics) theory and technique, and compared with single-point, oil-jet lubrication.

The results indicate that the air-oil distribution inside the bearing with multiple-point, oil-jet lubrication is more uniform. Taking a big-picture approach, Piping and Pipeline Engineering: Design, Construction, Maintenance, Integrity, and Repair elucidates the fundamental steps to any successful piping and pipeline engineering project, whether it is routine maintenance or a new multi-million dollar project.

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Yahua Dogu, Two-phase CFD calculations with continuous distributions of particle sizes. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. This book contains a compilation of 83 papers presented in the 6th International Congress on Design and Modeling of Mechanical System (CMSM’) held in Hammamet, Tunisia, from the 23rd to the 25th of March Mechanical Engineering - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free.

mech engg4/5(4). Prof. Yu has published 2 book chapters, Biography: Stephen P. Engelstad is currently a Lockheed Martin Senior 50 archival journal articles, 56 conference papers. Micro/Nanoscale Two-phase Pulsating and Loop Heat Heat Transfer Pipes B Japan PM Analysis Of Flow-induced Whistle At The Joint Of Suction Tube.

Jagannath, K and Sharma, S S and Kini, Achutha U and Prabhu, P R and Manjesh, B () Analysis of Cryogenic assisted Ammonia-water power Cycle.

In: 2nd International Conference on Current Trends in Engineering and Management (ICCTEM),Mysore. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science.

J In this paper, the effect of finite strain on the nonlinear free vibration and bending of the symmetrically micro/nanolaminated composite beam under thermal environment within the framework of the Euler–Bernoulli and. D’ARSONVAL D=CHANNEL [] D=FLIP=FLOP D=HOMO D=NOR D=SHAPED D2=MAC [] DAC [] DACRON DACTYLOSPORANGIUM DAD [] DADO Dadoed Dadoing DAGGER Daggers DAIDZEIN DAILY DAIRY Dairies DAISY Daisies DALAPON DALE Dales DALTONS [] Dalton [] DAM Dammed Damming Dams DAMA [] DAMAGE.

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Labyrinth seals are installed on the diaphragms to minimize internal gas leaks (see Fig. These seals are formed by rings made in two or more parts. The last impeller of a stage (the term stage refers to the area of compression between two consecutive nozzles) sends the gas into a diffuser which leads to an annularFile Size: 15MB.

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Turboexpanders and Process Applications or near its dew point, the turbine would operate in the condensing range, resulting in two-phase flow in the turbine outlet. This condensate has caused severe erosion problems in ordinary turbines; however, the design of the radial inflow turbine solved these problems, as will be discussed later.

Aspirating Seals An aspirating seal is a hydrostatic face seal with a narrow gap to control the leakage flow and a labyrinth tooth to control leakage flow at elevated clearances (fig.

34(a)) and forms a high-pressure cavity for the diffused-injected flow in the engine cavity at operating conditions (fig. 34(b)) Conventional labyrinth. Obstructions, changes in flow direction, or velocity changes that may cause formation of vortices and air entrainment must be avoided.

Flow patterns within the structure, when one or more pumps are idle, must also be considered. Pump settings, the distance from the mounting floor to the suction intake, typically vary from 15 feet to 80 feet.

Thermal Analysis of Cryogenic Hydrogen Liquid Separator. NASA Technical Reports Server (NTRS) Congiardo, Jared F.; Fortier, Craig R. (Editor) During launch for the new Space Launch System (SLS) liquid hydrogen is bleed through the engines during replenish, pre-press, and extended pre-press to condition the engines prior to launch.

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The behavior of the three-beam densitometer, turbine meter, and drag flowmeter is discussed in terms of two-phase models. Results from application of some two-phase. A comprehensive review of seals-secondary flow system developments are documented by Hendricks et al, and NASA Seals Code and Secondary Flow Systems Development publications Unsteady flows perturb both the power and the secondary flow streams.2 A T1 turbine (first stage of the HPT) can have 76 blades and 46 stators all interacting Read:.

JOURNAL OF PROPULSION AND POWER Vol. 22, No. 2, March–April Sealing in Turbomachinery Raymond E. Chupp General Electric Global Research, Niskayuna, New York Robert C.

Hendricks NASA John H. Glenn Research Center at Lewis Field, Cleveland, Ohio Scott B. Lattime The Timken Company, North Canton, Ohio and Bruce M. Read: Categories. Baby & children Computers & electronics Entertainment & hobby.HYBRID FLOATING BRUSH SEAL FEASIBILITY STUDY FOR THE HIGH TEMPERATURE ADVANCED GAS TURBINE APPLICATIONS Abstract: The present proposal offers the possibility of a technological jump in the use of Brush Seals, which in themselves represent a novel technology presently being incorporated in the new generation of jet engines.