The object of measuring velocity distribution is to show the characteristics of turbulent flow velocity field in recoil mechanism, so as to make some Suggestions for the design of recoil mechanism.

Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.

Threaded seat rings for valves in services with high velocity turbulent flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.