Response of Turbulent Pipe Flow to an Axisymmetric Body*

To better understand the effects of pressure gradient, streamline convergence/divergence, and streamline curvature in wall-bounded flows, a body-of-revolution (BOR) is placed on the axis of the Superpipe at Princeton University. Three different bodies are tested, with blockage ratios of 1/9, 2/9 and 3/9. Measurements using a nano-scale thermal anemometry probe (NSTAP) are made in the flow over the body and in the wake recovery region. The Reynolds numbers of the incoming pipe flow are varied from 0.5x10⁶ to 5x10⁶.