Mean and fluctuating pressure measurements over a circular cylinder in cross flow using plastic tubing

Not only can mean pressures on a surface over which a fluid flows be accurately measured using a plastic tube which connects the surface tapping points to a remote pressure transducer, but the fluctuating pressures can also, provided that the transfer function, which relates the fluctuating pressures at the opposite ends of the tubing, is known. This technique was used here to measure the mean and fluctuating pressures on the surface of a circular cylinder subject to a cross-flowing airstream in the Reynolds number range from 6.8 × 104 to 9.6 × 104 based on cylinder diameter. Good agreement with published results gave confidence in the technique.