The Analysis of Flow Stability in Pipe by Experiment

摘要

Many kinds of fluid were sent by pipes, the stability of the flow was closely related to the exchange of energy. The velocity field of a pipe was tested in the experiment; the curves of standard deviation were obtained from the test. The results show that at low Reynolds number axial and radial standard deviation curves decrease and the stabilization of the flow is better; at high Reynolds number the curves of standard deviation reach its peak at different locations; the downward trend of the curve is relatively gentle after the peak point, it has higher instability.