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Sunday, May 3, 2020 | History

3 edition of Two-phase flow research using the learjet apparatus found in the catalog.

Two-phase flow research using the learjet apparatus

Two-phase flow research using the learjet apparatus

  • 388 Want to read
  • 10 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • C-135 aircraft.,
  • Lear jet aircraft.,
  • Liquid-gas mixtures.,
  • Microgravity.,
  • Test chambers.,
  • Two phase flow.

  • Edition Notes

    Other titlesTwo phase flow research using the learjet apparatus.
    StatementJohn B. McQuillen and Eric S. Neumann.
    SeriesNASA technical memorandum -- 106814.
    ContributionsNeumann, Eric S., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15413463M

    In fluid mechanics, multiphase flow is a generalization of the modeling used in two-phase flow to cases where the two phases are not chemically related or where more than two phases are present. Each of the phases is considered to have a separately defined volume fraction, and velocity field.   The hydrophobicity is an important parameter in two-phase thermal hydraulic systems. Previous research indicated that the hydrophobicity influences the two-phase flow regime. However, all results had been conducted under isothermal conditions, and thermal experiments totally lacked, especially for a microscale two-phase by: The Learjet 45 made its first flight in October , powered by two Allied Signal TFE turbofan engines. As the Learjet 45 entered service in , over 1, Learjet aircraft, notably the Learjet 24 and Lear were delivered to customers in the United States and 40 countries since Description: The use of Coriolis mass flow metering for two-phase (gas/liquid) flow is an emerging theme of both academic research and industrial application. The key issues are to maintain flow tube operation during two-phase flow, while modeling and correcting.


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Two-phase flow research using the learjet apparatus Download PDF EPUB FB2

The Learjet Two-Phase Flow Apparatus, shown in figure 1, mixes air with a water solution in metered quantities and is used to make measurements of basic, two-phase flow phenomena. The capabilities and operation of the apparatus are detailed in this report so others may utilize it.

Low-gravity, gas-liquid flow research can be conducted aboard the NASA Lewis Learjet, the Lewis DC-9, or the Johnson Space Center KC Air and water solutions serve as the test liquids in cylindrical test sections with an inner diameter of cm and lengths up to m. apparatus designed to fly in the NASA Lewis Learjet 25 (ref.

Based on the design of and experiences with this apparatus, a larger apparatus was designed, built, and tested. The larger apparatus, the DC-9/KC Two-Phase Flow Apparatus shown in figure 1, mixes air with a water solution in metered quantities and measures basic, two.

Get this from a library. Two-phase flow research using the learjet apparatus. [John B McQuillen; Eric S Neumann; United States. National Aeronautics and Space Administration.]. Two-phase flow research using the learjet apparatus. By Eric S.

Neumann and John B. Mcquillen. Abstract. Low-gravity, gas-liquid flow research can be conducted aboard the NASA Lewis Learjet, the Lewis DC-9, or the Johnson Space Center KC Air and water solutions serve as the test liquids in cylindrical test sections with an inner diameter Author: Eric S.

Neumann and John B. Mcquillen. McQuillen, J. & Neumann, E. Two-phase flow research using the Learjet apparatus. NASA Technical MemorandumNASA Lewis Research Center. Reinarts, T. Adiabatic two phase flow regime data and modeling for zero and reduced (horizontal flow) acceleration by: J.B.

McQuillen, E.S. NeumannTwo-phase flow research using the learjet apparatus NASA Technical Memorandum, NASA, Cleveland, OH, TM (), pp. Google ScholarCited by: 1. Purchase Entropic Invariants of Two-Phase Flows - 1st Edition.

Print Book & E-Book. ISBNTwo Phase Flow Modeling: Summary of Flow Regimes and Pressure Drop Correlations in Reduced and Partial Gravity NASA/CR— January National Aeronautics and Space Administration Glenn Research Center Prepared under Cooperative Agreement NCC3–Cited by: First and second gamma ray attenuation measurements (10,17;10,16) are made with one-shot-collimators (22, 21) to measure repetitively the void fractions of said mixture in lower and upper portions (14L, 14U) of a transverse section through a pipe along which is flowing a gas and liquid mixture.

Statistical features are derived from the measurements and are used in logical classification steps Cited by: Up to present, the experimental research on oscillatory flow process and heat transfer effect of two-phase flow is incomplete; the existing research results either only study the flow characteristics of oscillatory gas-liquid two-phase flow, or only study its oscillatory heat transfer characteristics,, there has no compositive Author: Hairong Zhu, Junfa Duan, Haiting Cui, Qinggang Liu, Xinqi Yu.

Two-Phase Flow through Rock Fractures b Fig. Dimensionless escape pressure versus dip angle for the inch aperture.

The conclusions from the data available to date are given below: (i) Gas escape through rock fractures is a complex function of a number of parameters including fracture aperture and dip and cavern roughness and by: 4. A systematic experimental investigation of two-phase flow patterns in microchannels was the objective of this air and water, experiments were conducted in circular microchannels with 1.

Changes in Early Postmortem Contents of ATP and Other Nucleotides in Normal and Poor Quality-simulated Pork. Two-phase flow research using the Learjet apparatus. of over 2, results for Books: "research flow" Skip to main search results Two-phase flow research using the DC-9/KC apparatus.

by National Aeronautics and Space Administration (A School for Advanced Research Resident Scholar Book) by Vernon L. Scarborough | Aug 1, Paperback $ $ 83 $ $ Get. Experimental Study of Gas Slippage in Two-Phase Flow Article (PDF Available) in SPE Reservoir Evaluation & Engineering 7(6) December with Reads How we measure 'reads'.

The effects of gravity on a phase separator are studied numerically using an Eulerian/Lagrangian two-phase flow approach. The separator utilizes high intensity swirl to separate bubbles from the.

Two-phase cooling method has been highly regarded as a reliable cooling technique. While this method is actively used for diverse electronics cooling, research for the application in PEMFC is recently developing. There is a very limited research about applying two-phase cooling method to PEMFC system.Cited by: 4.

The P wing airfoil was superb, and we did use a modified version of this as well The LearJet was a totally new design using a few of the best features of the P” Coming to America Despite the economic advantages of his Swiss operation (where labor rates were roughly half of US pay rates), progress at FFA was too slow for the impatient.

Pressure drop in two-phase flow is a major design variable, governing the pumping power required to transport two-phase fluids and also governing the recirculation rate in natural circulation systems. The conservation equations for two-phase flow are a subset of those for Multiphase Flow.

Microgravity two-phase flow experiments are conducted on the NASA Lewis Learjet which can produce second periods of microgravity (0 k g) by following a Keplerian trajectory [SI. A flow loop provides metered quantities of gas and liquid to an annular mixer.

Studies of Two-Phase Flow Dynamics and Heat Transfer at Reduced Gravity Conditions Larry C. WiRe, W. Scott Bousman, and Larry B. Fore University of Houston Houston, Texas February Prepared for Lewis Research Center Under Grant NAG3 File Size: 1MB. Learjet is a Canadian owned, American aerospace manufacturer of business jets for civilian and military use based in Wichita, d in the late s by William Powell Lear as Swiss American Aviation Corporation, it has been a subsidiary of Canadian Bombardier Aerospace sincewhich markets it as the "Bombardier Learjet Family".

The 3,th Learjet was delivered in June Founder: Bill Lear. An experimental study of electrical impedance tomography for the two-phase flow visualization February International Communications in Heat and Mass Transfer 29(2) This study explains the relationship between friction coefficient and pressure change at a range of Reynolds (21, - 28,) and (0 - ) solid loading ratio of two-phase flow (gas-solid) inside a circular copper pipe by using laboratory apparatus and solving the equations mathematically.

An experimentally relationship of friction coefficient and pressure change with Reynolds number and Cited by: 1. Article citations. More>> Wallis, G.B. () One-Dimensional Two-Phase Flow.

has been cited by the following article: TITLE: The Relation between the Coefficient of Friction and Pressure Drop by Using the Different Reynolds Number in a Circular Tube AUTHORS: Abdulmagid A. Khattabi, Ahmed A. Hablous, Mofied M. Elnemry KEYWORDS: Two-Phase Flow, Pressure Drop, Reynolds Number, Loading Ratio.

The first Model 25 flew on Augand the first delivery was in November The Learjet 25 is similar to the Model 24 but is m (4 ft 2 in) longer, allowing for three additional passengers. In the Learjet 25B was produced along with the Learjet 25C in the same year. Type development continued with the Models 25D and 25G, which included more advanced CJA engines and a Manufacturer: Learjet.

User Review - Flag as inappropriate A great page coloured manual for any pilot learning to fly the LJ35/36 aircraft. The manual includes descriptions of the aircraft's operating systems and emergency procedures and sample exam questions designed to help the reader pass the necessary Aircraft Endorsement exams.

The manual is available for sale at 5/5(1). @article{osti_, title = {Simplified vent sizing methods incorporating two-phase flow}, author = {Leung, J C}, abstractNote = {Venting requirements for both reactive and non-reactive systems are reviewed here with particular reference to multiphase discharge and runaway reactions.

Runaway reaction systems can generally be classified as tempered or non-tempered types. OSHA (29 CFR ) has recognized AIChE/DIERS two-phase flow publications as examples of good engineering practice for process safety management of highly hazardous materials.

The prediction of when two-phase flow venting will occur, and the applicability of various sizing methods for two-phase vapor-liquid flashing flow, is of particular interest when designing emergency relief Author: H.

Fisher. The Learjet has exceptional performance and can operate over a large range of true airspeeds, from m s-1 at sea level to m s-1 at 30, feet.

Due to its high thrust-to-weight ratio, the Learjet can climb at extremely high rates, up to 6, feet per minute at sea level and 2, feet per minute at 25, feet. This work presents the phase fraction and flow rate measurements of oil–water two-phase flows based on the developed apparatus.

Full-range phase fraction can be obtained by the combination of the ECT sensor and the ERT by: 5. The Learjet 24 was designed as an improved version of the Lear which was limited to 12, pounds (5, kg) gross ers designed the model 24 to accept up to the f pounds (6, kg) gross weight permitted by FAR standards.

Other improvements introduced in the Learjet Manufacturer: Learjet. @article{osti_, title = {Two-Phase Mass Flow Measurement Using Noise Analysis}, author = {Evans, Robert Pugmire and Keller, Joseph George and Stephens, A G and Blotter, J}, abstractNote = {The purpose of this work is to develop a low cost, non-intrusive, mass flow measurement sensor for two-phase flow conditions in geothermal applications.

@article{osti_, title = {Sampling a two-phase geothermal brine flow for chemical analysis}, author = {Hill, J H and Morris, C J}, abstractNote = {An experiment designed primarily to define the problems associated with sampling the two-phase flow in a pipeline of geothermal brine is described.

Analyses reported for 26 samples include chemical composition, oxidation potential, pH, density. Conference: Zero-G two phase flow regime modeling in adiabatic flow. Zero-G two phase flow regime modeling in adiabatic flow. Full Record; Other Related Research.

Overall, the Learjet 60 is more stable than the Model 55C, according to the firm’s flight test engineers. The Learjet 60 retains the basic airframe structure of the Mo but it was the first business aircraft to have its shape honed by using the NASA/Boeing Tranair compu-tational fluid dynamics (CFD) software.

Modelling aircraftFile Size: 58KB. The Learjet 60 is an improved version of the Lear with a longer fuselage and more powerful turbofan engines. It first flew on 10 October and received FAA certification in January The modifications that converted the Learjet Model 55 into a Model 60 resulted from an aerodynamics improvement program and a need to increase the capacity of the Learjet product cturer: Bombardier Aerospace.

a Learjet flown by Hank Beaird and Ronald Puckett, with five passengers, set a time-to-climb record reach feet in 7 minutes, 21 seconds. With an engine thrust-to-weight ratio of pounds, the Learjet could outclimb an F fighter.

The first new derivative, the Lear was type certified in March Shortly thereafter, aFile Size: 29KB. Learjet 45XR Limitations study guide by IFLYGVS includes questions covering vocabulary, terms and more.

Quizlet flashcards, activities and games help you improve your grades. PACK High Flow Limitations. Hi Flow must be off with take off power selected, or for landing, anti ice operations and flight ab feet. The Aero-Thermo-Mechanics (ATM) Department of ULB (Université Libre de Bruxelles) is developing an original system to pump and separate a two-phase flow.

Many applications need to extract a certain phase of a multiphase flow: oil extraction, flow in nuclear pumps, flow in aircraft lubrication systems, pulp and paper processing, by: 9.A magnetic densitometer for locating defects and metallic inclusions in materials is described.

The apparatus consists of two primary coils connected in series opposition and adapted te be placed in inductive relation to the material under test, a source of constant frequency alternating current coupled across the primary coil combination, a pick-up coil disposed in symmetrical inductive.

An apparatus and method for measuring the flow rates of each component of two-phase flow consisting of a gas and a liquid or three-phase flow consisting of water, oil and gas, including a first volumetric flow meter stage, and second and third momentum flow meter stages coupled in a series flow path with the volumetric flow meter stage and in which a velocity ratio between the gas and the.