PIV of Swirling Flow in a Conical Pipe with Vibrating Wall

PIV Study of Conical Forebody Flow Control Using Plasma Actuators

Duty cycle modulation of the alternate blowing from two opposite facing plasma actuators on the leeward surface near the apex of a cone having semi-apex angle of 10° to control the mean lateral force, moment and the flow control mechanisms are presented. The pressure distributions over the cone forebody are measured using steady pressure-tappings. The flowfields are visualized by a two-dimensio...

Steady Vortex Breakdown in Swirling Flow Inside a Closed Container: Numerical Simulations, PIV and LDV Measurements

Numerical simulations and measurements using PIV and LDV have been carried out for steady vortex breakdown inside a closed container. The numerical solution has been employed as a benchmark to assess the capabilities and limitations of the experimental techniques in a difficult flow case involving a double breakdown in the limit of the

Wall corrections in modeling rotating pipe flow

PIV Measurements of turbulence statistics and near-wall structure of fully developed pipe flow at high Reynolds number

Fully developed turbulent pipe flow at Re=11300 as well as Re=5300 is measured by PIV using water as working fluid. Excellent agreement with DNS (Direct Numerical Simulation) by Satake (2000) is achieved by choosing optimum measurement parameters such as spatial resolution, time separation of two images, and number of samples. The test section is 6.7m long stainless steel pipe with transparent ...

Optimizing naturally driven air flow in a vertical pipe by changing the intensity and location of the wall heat flux

Heat transfer from the internal surfaces of a vertical pipe to the adjacent air gives rise to the air flow establishment within the pipe. With the aim of optimizing the convective air flow rate in a vertical pipe, the details of the flow and thermal fields were investigated in the present study. Conservation equations of mass, momentum, and energy were solved numerically using simple implicit f...