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Calibration And Comparison Of Cobra Probe And Hot Wire Anemometer For Flow Measurements In Turbomachinery
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Book Synopsis Calibration and Comparison of Cobra Probe and Hot Wire Anemometer for Flow Measurements in Turbomachinery by : John H. Perry
Download or read book Calibration and Comparison of Cobra Probe and Hot Wire Anemometer for Flow Measurements in Turbomachinery written by John H. Perry and published by . This book was released on 1974 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alternative methods of measuring mean airflow properties within a turbomachine are considered. A three-tube impact pressure probe (Cobra tube) has been calibrated to relate functions of the three tube impact pressures, total pressure and velocity to the angle at which the instrument is yawed to the calibration stream direction for angles between + 60 deg. This permits the flow properties of total pressure, velocity and yaw angle to be established from probe readings obtained by traversing a flow annulus with a tube aligned with the tunnel axis. Curve fitting functions have been developed to enable the calibration relations to be applied to computer orientated data reduction programs. Similarly, calibration functions relating flow direction to velocity and wire angle of a hot wire anemometer probe in terms of bridge voltage, have been assessed. Reynolds number influences are shown to be small for the Cobra tube and negligible for the hot wire anemometer. The two measurement systems have been compared by using the two instruments independently, to measure properties of flow and angle upstream and downstream of a single stage axial flow rotor/ stator research fan. Good agreement was obtained.
Book Synopsis Fundamentals of Hot Wire Anemometry by : Charles G. Lomas
Download or read book Fundamentals of Hot Wire Anemometry written by Charles G. Lomas and published by Cambridge University Press. This book was released on 2011-06-09 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1985 book provides a summary of the theory and practice of the hot wire anemometer, an instrument used to measure the speed of fluid flow. Many techniques and uses of this instrument are discussed in detail. The author considers such topics as probe fouling, probe design, and circuit design, as well as the thermodynamics of heated wires and thin films. He also discusses measurements of turbulence, shear flows, vorticity, temperature, combined temperature and velocity, two-phase flows, and compressible flows for measurements in air, water, mercury, blood, glycerine, oil, luminous gases, and polymer solutions. The book concludes with a section on the pulsed wire anemometer and other wake-sensing anemometers. This book assumes a familiarity with basic fluid mechanics. However, mathematical descriptions occur near the end of each chapter thus allowing those with a limited mathematical background to make use of the practical details at the beginning of each chapter.
Book Synopsis Development of an automated calibration system for hotwire anemometers by : Constantin Schosser
Download or read book Development of an automated calibration system for hotwire anemometers written by Constantin Schosser and published by diplom.de. This book was released on 2010-01-22 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inhaltsangabe:Introduction: In experimental fluid dynamic measurements hot-wire anemometry is used to record information about flow fields. Furthermore one can obtain the magnitude, the direction and even the time dependant behaviour of the fluid flow, if multiple-wire probes are in operation. The hot-wire measurement technique is based on the convective heat transfer from a heated element to the fluid flow, which is actually proportional to the velocity of the flow. So HWA is an indirect measurement technique. There are miscellaneous sensors which work properly in water or other liquids, air or in gas flows. As an example, Fig. 1.1 shows a cross-wire probe in a fluid flow, which can detect the velocity and its direction in two components, if the main flow direction is in one plane (2D flow). Predominantly HWA is a research tool for turbulent flow studies, especially transient procedures. Turbulence models have to be built to represent the characteristics of the flow in numerical simulations (CFD). Therefore only detailed experimental measurements lead to reliable information about the local velocity of a turbulent flow. This can be provided by HWA on the basis of its very high spatial and temporal resolution. Although the development of HWA started at the beginning of the 19th century and new techniques like PIV or LDA (direct methods) have been established, it is still a common device in all wind tunnel labs. The analogue output signal can be optimized by filters before signal processing. It can also be deployed to arrange a spectrum analysis, due to the high temporal resolution. Moreover, unlike the digital devices the analogue signal is densely packed. The range of application is large and leads from sub- and supersonic flows, the independency of the medium to high-temperature measurements. HWA is also affordable in contrast to LDA and PIV systems. In spite of these advantages the natural contamination of the hot-wire probe increases by and by, since the particles in the fluid flow mature themselves to the probe and finally isolate it. As this effect of disturbance causes measuring errors, the hot-wire probes have to be calibrated at frequent intervals - best before and after every data acquisition series. However, HWA is an intrusive measurement technique, thus disturbing the flow. Another disadvantage is that it is not applicable in separation and backward flow regions. The aim of this thesis is to develop an automated calibration system to [...]
Book Synopsis Hot-wire Anemometry by : Anthony Edward Perry
Download or read book Hot-wire Anemometry written by Anthony Edward Perry and published by Oxford University Press, USA. This book was released on 1982 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A calibration technique for a hot-wire-probe vector anemometer by : James Scheiman
Download or read book A calibration technique for a hot-wire-probe vector anemometer written by James Scheiman and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Commonwealth Scientific and Industrial Research Organization (Australia). Division of Mechanical Engineering Publisher : ISBN 13 : Total Pages :448 pages Book Rating :4.:/5 (38 download)
Book Synopsis Report by : Commonwealth Scientific and Industrial Research Organization (Australia). Division of Mechanical Engineering
Download or read book Report written by Commonwealth Scientific and Industrial Research Organization (Australia). Division of Mechanical Engineering and published by . This book was released on 1970 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fifth Australasian Conference on Hydraulics and Fluid Mechanics, University of Canterbury, Christchurch, New Zealand, 9-13 December, 1974 by :
Download or read book Fifth Australasian Conference on Hydraulics and Fluid Mechanics, University of Canterbury, Christchurch, New Zealand, 9-13 December, 1974 written by and published by . This book was released on 1974 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference Proceedings written by and published by . This book was released on 1975* with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Axial Flow Fans and Ducts by : R. A. Wallis
Download or read book Axial Flow Fans and Ducts written by R. A. Wallis and published by Wiley-Interscience. This book was released on 1983-09-23 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the theory, design, analysis, testing, and research of axial flow fans. Contains up-to-date data on recent developments in the field. Interrelates fan and duct design techniques. Discusses commercial and product development test procedures. Covers future experimental research objectives. Includes a reference section on F-series of airfoils.
Download or read book CSIRO Index written by and published by . This book was released on 1975 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Commonwealth Scientific and Industrial Research Organization (Australia) Publisher : ISBN 13 : Total Pages :716 pages Book Rating :4.3/5 (91 download)
Book Synopsis CSIRO Index by : Commonwealth Scientific and Industrial Research Organization (Australia)
Download or read book CSIRO Index written by Commonwealth Scientific and Industrial Research Organization (Australia) and published by . This book was released on 1975 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASME 69-HT-A written by R. P. Dring and published by . This book was released on 1969 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report by : CSIRO. Division of Mechanical Engineering
Download or read book Annual Report written by CSIRO. Division of Mechanical Engineering and published by . This book was released on 1973 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Annual Report - Division of Mechanical Engineering by : CSIRO (Australia). Division of Mechanical Engineering
Download or read book Annual Report - Division of Mechanical Engineering written by CSIRO (Australia). Division of Mechanical Engineering and published by . This book was released on 1974 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Australian Government Publications by :
Download or read book Australian Government Publications written by and published by . This book was released on 1976 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Hot-wire Anemometer for Measuring Air Flow Through Engine Radiators by : Carl George Frederick Zobel
Download or read book A Hot-wire Anemometer for Measuring Air Flow Through Engine Radiators written by Carl George Frederick Zobel and published by . This book was released on 1925 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Calibration of a Hot Wire Anemometer Probe by : Gerald Simmons Kirby
Download or read book The Calibration of a Hot Wire Anemometer Probe written by Gerald Simmons Kirby and published by . This book was released on 1964 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
