This research presents a case study of the biases and discontinuities that were introduced in observed long-term mean wind-speed gust data-series due to anemometer changes meteorological station northern Spain, operated by Spanish State Meteorological Agency: San Sebastian-Igueldo. Field wind-tunnel experiments with predefined conditions have been presented literature, however this uses real as...

The ability of a thermal anemometry system to accurately measure unsteady fluid velocity depends on the electrical control system as well as the thermal properties of the sensor. The present work is a numerical study of the thermal transient response of a hot-wire. A conventional constant temperature anemometer with an ideal feedback amplifier as well as a pulse width modulated system were used...

Abstract Environmental wind measurements are essential for ensuring the operational safety of rail vehicles. In our previous work, an anemometer that can be mounted on top a train to achieve real-time speed and direction was proposed based pressure distributions around cylindrical anemometer. However, flow field is significantly influenced by train; thus, measured data might differ from actual ...

Air flow measurement at the outlets of air terminal devices installed in ventilation systems is very difficult. At anemostats, swirl diffusers, grilles, can swirl, contract, or expand sharply, change its direction, etc., which causes great errors. Therefore, it was necessary to develop a universal measuring device that would make possible measure rate with high accuracy. It should consist an co...

Instantaneous velocity of pulmonary artery blood was measured using a thin-film resistance anemometer mounted on a hypodermic needle. Studies were performed, at thoracotomy, in five dogs and five patients. Instantaneous blood velocity was recorded at several sites across die transverse axis of the main pulmonary artery to determine the shape of the velocity profile. We found the velocity profil...