Multi-Hotwire Probe Sensitivity Optimization in Constant Temperature Anemometry (Cta) for Transonic Flows

Efim Yablochkin
Work towards MSc degree under the supervision of Asst. Prof. Beni Cukurel
Department of Aerospace Engineering
Technion – Israel Institute of Technology

A simple optimization method is proposed for multi-wire CTA probe design. The optimization computes the sensitivities to density, velocity and total temperature for each wire, based on empirical Nu – M – Re and ƞ – M – Re correlation for heated cylinders in compressible flow. This correlation is a reasonable estimator for the compressibility effect, enabling the reduction to M-independent relation. The output is a set of optimal wire temperatures and diameters, recommended for probe production. Following the manufacturing, it is necessary to calibrate each wire for Re – Nu relationship and apply together with the empirical compressibility relation. The technique allows the use of a single probe with multiple wires across a range of transonic flows with various conditions.

The talk will be given in English

Wed, 23-08-2017, 16:30 (Gathering at 16:00)

Classroom 165, ground floor, Library, Aerospace Eng.

Light refreshments will be served before the lecture


Multi-Hotwire Probe Sensitivity Optimization in Constant Temperature Anemometry (Cta) for Transonic Flows