A 3D laser doppler velocimetry study of the upstream velocity profile effects upon the flow field inside an orifice flowmeter.
(P=0.5) at a Reynolds number of 91,100 with three different
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (P=0.5) at a Reynolds number of 91,100 with three different and turbulent kinetic energy. In addition, particularities calculated by observing the pressure drop across an orifice calculation of the mean velocity components, the complete Changes in q are undesirable because they cause inaccuracies correlations, the rate of turbulence production, vorticity, Doppler Velocimeter) was used to obtain detailed velocity and effects upon the orifice plate discharge coefficients Cd- estimated tens of millions of dollars of annual mischarges field inside a standard orifice flowmeter. A 3-D LDV (Laser for gas companies. This has led to basic research on methods in flow measurement. This study was undertaken to determine inlet velocity profiles. Analysis of the correlated, instantaneous velocities in three dimensions enabled maximum velocity (vena contracta). of such a turbulent flow were determined: the point of Orifice meters are used for the measurement of flow rate, particularly in the natural gas industry. They are plate. Uncertainty of metering accuracy has resulted in an reattachment, the downstream primary recirculation zone and relatively simple and inexpensive devices; the flow rate is Reynolds stress tensor for compressible flow: [], the triple the effect of the upstream velocity profile upon the flow the upstream recirculation zone, the axial location of to improve orifice meter accuracy. Those investigations turbulence measurements for a flow of air in an orifice meter underline the importance of the upstream velocity profile |
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| Item Description: | "Major subject: Mechanical Engineering". In title, numerals are used. Vita. |
| Physical Description: | xvi, 123 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |