Investigation of heat transfer from thin wires in air and a new method for temperature correction of hot-wire anemometers

• 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 proposed over years, no consensus seems reached regarding correction methods. In this paper new precision on heat transfer heated wires confirmed that, provided between temperatures, Nusselt number is a consistent function Reynolds without any further corrections. Based knowledge calibration which accounts dependencies proposed. The aim has come up with that useful practical anemometry. parameters air- Velocity necessary one because conductivity viscosity incorporated function.