Abstract
Measurement of velocity upstream and downstream a special wire mesh was performed to ascertain the effect of the mesh on the flow. The mesh consisted of two components, a basic rectangular mesh with mesh width 1.22 mm and wire diameter 0.2 mm, and a top steel wool with random position of wires and wire diameter 0.05 mm. The velocity was measured by Constant Temperature Anemometry using single wire probe in a Plexiglas channel of rectangular cross-section. As a first step, measurement of one horizontal and one vertical measuring line was performed 10 mm upstream and 6 mm downstream the wire mesh. A spatial velocity profile upstream of the wire mesh was smooth, while the downstream velocity profile was highly disturbed. However, velocity fluctuations expressed in terms of turbulence intensity downstream of the wire mesh were attenuated down to 1%. Further measurements of the area downstream the wire mesh will be performed to describe the development of the flow.
Highlights
Wire meshes are commonly used to modify the flow conditions, often to remove particles from the flow or to adjust the level of velocity fluctuations
The measurement of horizontal line downstream the wire mesh was performed twice to verify the accuracy of positioning of the CTA probe and to verify stability of the measured velocity profile
The measurement revealed series of high-velocity jets behind outlets of mini-channels created by wires of the top steel wool and wakes behind clusters of wires
Summary
Wire meshes are commonly used to modify the flow conditions, often to remove particles from the flow or to adjust the level of velocity fluctuations. They are applied as parts of deposition devices [1] or as gas burners [2]. The most detailed attention was devoted to wire meshes used for generation or reduction of turbulence in wind tunnels. Current study was performed on a wire mesh with more complicated structure than the meshes used in wind tunnels. The current mesh is being used for an industrial application, where the flow field immediately downstream is significant. Data presented here are result of the first preliminary measurement and will be supplemented in near future with more detailed measurement in multiple downstream positions
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
