We present a combined Direct Numerical Simulation and Hot Wire Anemometry study of an axisymmetric turbulent wake. The data lead to a revised theory of axisymmetric turbulent wakes which relies on the mean streamwise momentum and turbulent kinetic energy equations, self-similarity of the mean flow, turbulent kinetic energy, Reynolds shear stress and turbulent dissipation profiles, non-equilibri...

• Hot wire anemometers are sensitive to absolute values of air and sensor temperatures. Air properties should be evaluated at the mean Actual for need not determined, only temperature derivatives. Influence from expressed as functions Variations in fluid most important error source hot-wire anemometer measurements must sometimes compensated for. Although many compensation schemes have been prop...

This paper reports the construction of an axisymmetric nonpremixed piloted jet burner, with well-defined initial and boundary conditions, known as the Delft burner, to assess turbulence-chemistry interaction in non-premixed turbulent flames. Detailed experimental information is described, involving hot-wire anemometry, thin-wire thermocouples and chemiluminescence visualization measurements. Ra...

Cross correlations of the fluctuating wall-shear stress and the streamwise velocity in the logarithmic region of turbulent boundary layers are reported over 3 orders of magnitude change in Reynolds number. These results are obtained using hot-film and hot-wire anemometry in a wind tunnel facility, and sonic anemometers and a purpose-built wall-shear stress sensor in the near-neutral atmospheric...

Aeraulic, air movement, and wind effects studies are of high importance when assessing building performances. Indeed, several have been conducted using tunnels to better understand aerodynamics inside around buildings. The objective this study is accurately characterize the velocity field test chamber a tunnel at different locations Hot-Wire-Anemometry technique propose an experimental protocol...

This paper deals with active control of a continuous jet issuing from long pipe nozzle by means concentrically placed annular synthetic jet. The experiments in air cover regimes laminar, transitional, and turbulent main flows (Reynolds number ranges 1082–5181). velocity profiles (time-mean fluctuation components) unforced forced jets were measured using hot-wire anemometry. Six flow are disting...

Upon its development and initial characterization, the supersonic variant of nanoscale thermal anemometry probe (S-NSTAP) was deployed in a wind tunnel facility, where both freestream boundary layer measurements were obtained at $$M_\infty =2$$ . The low operating stagnation pressures generated reliable data, effects Reynolds number, Mach number overheat ratio on sensor’s heat transfer investig...