Last edited by Kajilar
Wednesday, August 25, 2021 | History

3 edition of vapor generator for transonic flow visualization found in the catalog.

vapor generator for transonic flow visualization

Robert A. Bruce

vapor generator for transonic flow visualization

  • 71 Want to read
  • 35 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center in Hampton, Va .
Written in English

    Subjects:
  • Physical vapor deposition,
  • Wind tunnels -- Flow visualization,
  • Aerodynamics, Transonic

  • Edition Notes

    StatementRobert A. Bruce, Robert W. Hess, and José A. Rivera, Jr.
    SeriesNASA technical memorandum -- 101670.
    ContributionsHess, R. W., Rivera, José A., Jr., Langley Research Center.
    The Physical Object
    Pagination17 p. :
    Number of Pages17
    ID Numbers
    Open LibraryOL17630319M
    OCLC/WorldCa25698949

    Quantitatively the flow away from the hub region agreed the best. The general trends of the severe hub endwall stail were predicted, although the shape and size did not match experiment exactly. The S1-S2 system was unable to predict the hub endwall stall, since it arises from fully 3D flow effects. Investigation of Vapor-Phase Lubrication in a Gas Turbine Engine. Kenneth W. Van Investigation of Tip Leakage Effects in Transonic Flow Using a Parallel Unstructured Navier-Stokes Code. C-W , Design, Flow (Dynamics), Turbines, Flow visualization, Blades, Clearances (Engineering), Pressure. Grid Dependency Study for the NASA Rotor. Supersonic Combustion of Pylon-Injected Hydrogen in High-Enthalpy Flow with Imposed Vortex Dynamics, Journal of Propulsion and Power, Chung K-M, Chang P-H, Chang K-C, Lu FK. Investigation on transonic round convex-corner flows, Aerospace Science and Technology, 37 (1)–25, Liquid-liquid contact in vapor explosion. (), by Aryeh Segev (page images at HathiTrust; US access only) Nonsteady supercritical discharge through an orifice. (Buffalo, Cornell Aeronautical Laboratory, ), by George Rudlinger and Project Squid (page images at HathiTrust).


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vapor generator for transonic flow visualization by Robert A. Bruce Download PDF EPUB FB2

A vapor generator was developed for use in the NASA Langley Transonic Dynamics Tunnel (TDT). Propylene glycol was used as the vapor material. The vapor generator system was evaluated in a laboratory setting and then used in the TDT as part of a laser light sheet flow visualization system.

The vapor generator provided satisfactory seeding of the air flow vapor generator for transonic flow visualization book visible condensate particles, smoke Cited by: 4. Related papers. Page number 20 the flow-field properties. A species equation for the conservation of water vapor is also included, as well as an empirical method of predicting the onset of condensation.

To evaluate the versatility of the code, calculations of the transonic flow field about a two-dimensional airfoil, a cone at angle of attack, and the flow in plana~ two. Smoke flow visualization (Barlow et al.) involves the injection of streams of vapor into the flow.

The vapor follows filament lines (lines made up of all the fluid particles passing through the injection point). In steady flow the filament lines are identical to streamlines (lines everywhere tangent to the velocity vector).

Flow Visualization, Second Edition focuses on developments, applications, and results in the field of flow visualization. Organized into four chapters, this book begins with the principles of flow visualization and image processing. Subsequent chapters describe the methods of flow visualization, particularly the addition of foreign material to.

Visualization of flow pattern over or around immersed objects in open channel flow. II THEORY AND EQUATION: Open channel: An open channel is a passage in which liquid flows with vapor generator for transonic flow visualization book upper surface exposed to atmosphere.

In comparison to pipe flow, where flow occurs in closed passages under pressure, the flow in open. Vapor Power International. Vapor Powers six distinctive product lines provide steam generator, thermal fluid heater, hot water and superheated steam solutions, to meet every industry need and application.

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Circulatic Steam Generator Documents. Circulatic Steam Generator Installation Manual Circulatic Steam Generator Brochure.

Circulatic Specs Sheets. 75 BHP BHP BHP BHP BHP BHP BHP BHP Nanoprobes are specialized, miniature PS series Flowprobes, designed to measure mouse-sized blood flows of Transonic Systems signature high resolution quality.

The MAVB FLEX is suitable for vessels of diameters mm, such as the femoral or hepatic artery in mice or rats. Book. Jan ; J Eng Ind Trans ASME A vapor generator for transonic flow visualization. used in the TDT as part of a laser light sheet flow visualization system.

The vapor generator. Easy to maintain-continuous flow ensures self-cleaning; only maintenance required is to wash the system with de-ionized or distilled water when analysis is complete. Available VP Vapor Generator Consumables. Mercury Absorption Cell, 15cm (requires accessory mount) Spare Silica T Cells (2), also used for VP90 and EC90 Vapor Generators.

Flow visualization can be used to show how the air moves over and around the model. The methods below are readily available. Other methods can be accommodated please contact KWT. A summary of flow visualization methods is included in the table below: Flow Visualization comparison: Method.

Flow Vis. On Model. in Transonic Flows By C. MORAWETZ and I. KOLODNER We consider flows past airfoils which are irrotationai and subsonic for low Mach numbers at large distances from the airfoil.

If the Mach number at infinity is gradually increased, at some particular value a small supersonic region appears in the flow. This is a transonic flow case for which experimental results are available in the literature to compare [7]. At inflow Mach number of and angle of attack of degrees, the adapted meshes and Mach number contours for levels 2 and 3 are shown in Figure 3, along with the initial mesh increased sharpness of the shock regions is evident from the results.

Diagram illustrating the flow path of the analyte in an aqueous solution as it moves from the sample introduction vessels on the Trace Vapor Generator for Explosives and Narcotics (TV-Gen) control box, through the nebulizer interface, where the analyte is vaporized and continues through the TV-Gen oven, dual manifold system.

For Accurate Non-biased Air Flow Visualization Studies in Cleanrooms a Highly Visible Cloud of Neutrally Buoyant Tracer Particles are Required. The TPG-M1 has been scientifically designed, tested, and calibrated to meet these requirements. The Science. Flow Visualization: Techniques and Examples.

Figure Chemical structure and emission spectra for 1-BrNp in CDs with (B) and without (A) added alcohol (from Gendrich, ). rience m of displacement after 5 ms. Such a displacement is readily mea-surable. Obviously, displacement, and, correspondingly, measurement accuracy, increases as.

Visualization and PIV study of wing-tip vortices for three different tip configurations Aerospace Science and Technology, Vol. 16, No. 1 Natural Ventilation and Space Subdivision: Documentation and Simulation using Building Information Modelling Analytics and a Subsonic Wind Tunnel for Internal Spaces.

Visualization of 2D unsteady flow using streamline-based concepts in space-time 4 April | Journal of Visualization, Vol. 19, No. 1 NASA CFD Vision Visualization and Knowledge Extraction: Panel Summary from AIAA AVIATION Conference. Flow visualization results are presented for secondary flow in curved, heated, and rotating channels, as well as for internal flow in rotating machinery.

Measurement methods unqiue to flow in rotating devices are also introduced. Rotating tubes, channels, and heat pipes are the subjects of Part 3, which treats phase changes, turbulence, and.

The U. Naval Research Laboratory has built a compact trace vapor generator for explosives and narcotics (TV-Gen) for testing and calibrating trace chemical detectors used by law enforcement officials.

The trace vapor detection of explosives and narcotics is. Flow visualization was the earliest method employed to study the vortex wakes. Miau et al. [17] employed dye visualization techniques to understand the vortex shedding mechanism with ring shaped bluff bodies. Flow visualization images revealed that the presence of the pipe wall affects the vortex shedding mechanism and for blockage ratio above.

The figure shows five flow visualization techniques that are used in wind tunnel testing; smoke, tufts, laser sheet, surface oil flow, and schlieren photography.

Tufts and surface oil flow are used to provide information about the state of the boundary layer on the surface, particularly to detect flow separation and re-attachment.

A detailed numerical analysis of secondary flows in a transonic turbine is presented in this paper. The turbine stage is optimized by mitigating secondary flow through the method of non-axisymmetric endwall design.

An automated optimization platform of NUMECADesign3D was coupled with Euranus as a flow solver for the numerical investigation. Design and Development of Transonic Axial Flow Compressor Rotor Blade 1. International Journal of Engineering Research and Development e-ISSN: X, p-ISSN: X, Vol Issue 4 (April ), PP 22 Design and Development of Transonic Axial Flow Compressor Rotor Blade K Balaji1, S Emilon Zeon Rajan2, C Ganesan3, M.

  Measurements were performed by means of five-hole-probes, static wall pressure taps, and oil flow visualization at the duct endwalls. For a better understanding of the flow behavior the vortex generators were also investigated in a two-dimensional rectangular S-shaped duct using the same Mach number level.

Quantitative Flow Visualization. Objectives. The main objective of this project is to use the quantitative flow visualization technique into the teaching of thermal and fluids related disciplines by providing visualization-enhanced courseware.

This web-based package allows the students to learn many important subjects interactively by using. C Vapor Source Mass Flow Controller with Viscous Choked Flow.

Deliver source vapor without the need of a carrier gas system. Viscous flow through a choked orifice. Wide 30 to °C operating temperature range. 1 Products. C Vapor Source Mass Flow Controller with Viscous Choked Flow. The vapor generator system was evaluated in a laboratory setting and then used in the TDT as part of a laser light sheet flow visualization system.

The vapor generator provided satisfactory. Flow-field interactions are studied in a high-through-flow, axial-flow transonic compressor using Digital Particle Image Velocimetry (DPIV). Measurement of instantaneous velocities in two-dimensional (2D) planes in the main flow direction allows characterization of the unsteadiness of spatial structures from an upstream blade row and their interaction with the downstream rotor.

Transonic flows in astronomy and astrophysics. In astrophysics, wherever there is evidence of shocks (standing, propagating or oscillating), the flow close by must be transonic, as only supersonic flows form shocks.

All black hole accretions are transonic. Many such. Engineering. Feb. 21, 5, views. Fluid flow visualization is a technique to actually see the flow patterns and get an insight in the possible theory to be applied.

To see is to believe, it's said, hence this technique is very effective in understanding of fluid flow.

Static-pressure measurements and Pitot-pressure measurements were obtained for different nose configurations during wind tunnel tests. The test conditions included free-stream Mach numbers from to over a range of free-stream densities simulating altitudes f m to 21, m. The pressure data from these tests were analyzed to describe the internal and the external flow fields.

Part 1 presents invited lectures covering topics such as separated flow, porous flow, and turbulence modeling. Part 2 contains papers dealing with turbulence. Parts 3, 4, and 5 include studies on flow stability and transition, transonic flow, and boundary layer flows and shock waves, respectively.

Part 6 is devoted to aerodynamics and gas dynamics. Abstract. The design and performance of a vapor generator for calibration and testing of trace chemical sensors are described.

The device utilizes piezoelectric nozzles to dispense and vaporize precisely known amounts of analytic solutions onto a hot ceramic surface, where the generated vapors are mixed with air before exiting the device.

A linear cascade experiment has been conducted to investigate transonic flow losses of two nozzle blade profiles for high-pressure steam turbines.

Experimental incidences were changed from 34° to 35°, while exit Mach numbers were varied from to Reynolds numbers were tested between ×10 5 and ×10 6. Flow visualization. National Technical Reports Library - NTIS.

It is based on thin-film, amorphous silicon alloy, multijunction, solar cells deposited on a thin metal or polymer by a proprietary, roll-to-roll process.

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High-speed flow visualization in hypersonic, transonic, and shock tube flows H. Kleine, H. Olivier Proc. SPIESelected Papers from the 31st International Congress on High-Speed Imaging and Photonics, I (20 February ); doi:   Heat transfer measurements have been made in the Oxford University Cold Heat transfer Tunnel employing the transient liquid crystal technique.

Complete contours of that transfer coefficient have been obtained on the aerofoil surfaces of a large annular cascade of. The so-called pressure based method was originally developed for incompressible flow (M =), and later extended to subsonic and transonic flows. (5). The compressible flow methods (which include the density as the primitive variable) was originally developed for supersonic flows, and later extended to low Mach number flows.A SHORT HISTORY OF FLIGHT The theory of aerodynamics is the culmination of the works of many individuals.

It probably began with prehistoric man's desire to copy the actions of the bird and fly through the air. Early man, being unable to soar into the heavens himself, attributed to his gods the ability to fly. Posts: Rep Power: 5. Hi, I am modeling water and air evaporation. I read that I can use standard state enthalpy to model latent heat.

Water vapor and water SSE should be defined somehow the difference between them become latent heat.

So, if we consider that the SSE is J/Kmol, how should I define this for both of them? and what is.