A scheme is proposed for correcting the hot-wire attenuation in turbulence measurements in both frequency and time domains. The scheme is tested for simulated hot-wire signals under velocity impulse and sinusoidal perturbations of various frequencies. It is found that the frequency response of the hotwire system and the calculated central moments, after applying the correction, can be greatly i...

This paper describes HoLiSwap a method to reduce L1 cache wire energy, a significant fraction of total cache energy, by swapping hot lines to the cache way nearest to the processor. We observe that (i) a small fraction (<3%) of cache lines (hot lines) serve over 60% of the L1 cache accesses and (ii) the difference in wire energy between the nearest and farthest cache subarray can be over 6×. Ou...

To control the Karman vortex street formed behind a thin airfoil at a certain incidence, a control cylinder was placed at the suction side apart from the airfoil in the downstream region. Both smoke visualization and hot-wire measurements confirmed that the Karman vortex street was completely suppressed. The mechanism for suppression of the vortex street was examined with a hot-wire survey.

The turbulent flow in the wake of a discontinuous cylinder (DC) was investigated. DC geometry consisted segments $5D$ long (with $D$ being diameter cylinder) separated by gaps width $2.5D$ . Particle image velocimetry and hot-wire anemometry were used to analyse at two Reynolds numbers, $Re = 4000$ $10\,000$ , for $x/D \le 180$ Large eddy simulations both infinite continuous (CC) wakes also car...

Experiments have been conducted on a swept wing model in low-turbulence wind tunnel at chord Reynolds number of $2.17 \times 10^{6}$ to investigate the unsteady interaction forward-facing step (FFS) with incoming stationary crossflow (CF) vortices. The impact varying FFS height development and growth primary secondary CF disturbances ensuing laminar–turbulent transition is quantified through de...

A new apparatus for measuring both the thermal conductivity and thermal diffusivity of fluids at temperatures from 220 to 775 K at pressures to 70 MPa is described. The instrument is based on the step-power-forced transient hot-wire technique. Two hot wires are arranged in different arms of a Wheatstone bridge such that the response of the shorter compensating wire is subtracted from the respon...