Yaw Calibration Of Hot Wire Anemometers

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Yaw Calibration Of Hot Wire Anemometers

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Author : K.E. Scrase (University of Manitoba student)
language : en
Publisher:
Release Date : 1986

Yaw Calibration Of Hot Wire Anemometers written by K.E. Scrase (University of Manitoba student) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.

Fundamentals Of Hot Wire Anemometry

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Author : Charles G. Lomas
language : en
Publisher: Cambridge University Press
Release Date : 2011-06-09

Fundamentals Of Hot Wire Anemometry written by Charles G. Lomas and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-09 with Science categories.

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.

A Calibration Technique For A Hot Wire Probe Vector Anemometer

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Author : James Scheiman
language : en
Publisher:
Release Date : 1982

A Calibration Technique For A Hot Wire Probe Vector Anemometer written by James Scheiman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Hot-wire anemometer categories.

Development Of An Automated Calibration System For Hotwire Anemometers

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Author : Constantin Schosser
language : en
Publisher: diplom.de
Release Date : 2010-01-22

Development Of An Automated Calibration System For Hotwire Anemometers written by Constantin Schosser and has been published by diplom.de this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-22 with Technology & Engineering categories.

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 [...]

Calibration Of Hot Wires And Hot Films For Velocity Fluctuations

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Author : Marvin Francis Young
language : en
Publisher:
Release Date : 1976

Calibration Of Hot Wires And Hot Films For Velocity Fluctuations written by Marvin Francis Young and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Hot-wire anemometer categories.

Calibration And Comparison Of Cobra Probe And Hot Wire Anemometer For Flow Measurements In Turbomachinery

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Author : John H. Perry
language : en
Publisher:
Release Date : 1974

Calibration And Comparison Of Cobra Probe And Hot Wire Anemometer For Flow Measurements In Turbomachinery written by John H. Perry and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Anemometer categories.

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.

Calibration Of Hot Wires And Hot Films For Velocity Fluctuations

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Author : M. E. Taslim
language : en
Publisher:
Release Date : 1978

Calibration Of Hot Wires And Hot Films For Velocity Fluctuations written by M. E. Taslim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Anemometer categories.

A fully-developed, two-dimensional, incompressible channel flow was used as the calibration standard to investigate a number of configurations of hot-wire and hot-film anemometer probes of the two principal manufacturers.

Hot Wire Anemometry

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Author : Anthony Edward Perry
language : en
Publisher: Oxford University Press, USA
Release Date : 1982

Hot Wire Anemometry written by Anthony Edward Perry and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Language Arts & Disciplines categories.

Development Of Calibration Method For Hot Wire Anemometer

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Author : Mohammad Izat Abdul Rahaman
language : en
Publisher:
Release Date : 2008

Development Of Calibration Method For Hot Wire Anemometer written by Mohammad Izat Abdul Rahaman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Anemometer categories.

The Calibration Of Hot Wire Anemometers At Low Speed

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Author : D. Booth
language : en
Publisher:
Release Date : 1978

The Calibration Of Hot Wire Anemometers At Low Speed written by D. Booth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.