Results 21 to 30 of about 37,617 (247)

Overview of and first observations from the TILDAE High-Altitude Balloon Mission [PDF]

open access: yesAtmospheric Measurement Techniques, 2017
Though the presence of intermittent turbulence in the stratosphere has been well established, much remains unknown about it. In situ observations of this phenomenon, which have provided the greatest details of it, have mostly been achieved via sounding ...
B. A. Maruca   +6 more
doaj   +1 more source

Pressure Measurements in Jets Diffusion using a Developed Hot-Wire Static Pressure Sensor

open access: yesJournal of Fluid Science and Technology, 2009
The aim of this experimental study is to investigate the diffusion of jets, with particular attention focused on the relationship between the static pressure and the stream wise mean velocity on the development of a two-dimensional air jet.
Motoaki KIMURA, Norimasa MIYAGI
doaj   +1 more source

Wireless Real-Time Data Acquisition System for Aerodynamic Characterization of a Wind Turbine

open access: yesIngeniería, 2023
Context:  Wind energy sources utilize renewable, free, and environmentally friendly resources, so there are projects focused on the design of wind turbines to increase their efficiency.
Jhoan S. Casallas   +2 more
doaj   +1 more source

Novel hot-wire based spirometry is highly accurate at low flow rates

open access: yesCurrent Directions in Biomedical Engineering, 2018
Spirometry is the most commonly used pulmonary function test. The aim of this comparative study was to evaluate four commercially available spirometers with different measurement principles (turbine-, ultrasound-, differential pressure- and hot-wire ...
Perera Arshan   +2 more
doaj   +1 more source

Linear-response and simple hot-wire fiber-optic anemometer using high-order cladding mode.

open access: yesOptics Express, 2020
We present a single walled carbon nanotubes (SWCNTs)-coated tilted fiber Bragg grating (TFBG) hot-wire anemometer (HWA) with simple configuration, linear response, and high sensitivity. TFBG is utilized to effectively couple a pumping laser at 1550 nm to
F. Wang   +6 more
semanticscholar   +1 more source

An Automatic Optimiser for Air Flow Direction Measurement

open access: yesMeasurement + Control, 1968
A self-adaptive instrument servomechanism has been devised to enable airflow direction to be automatically determined when using a hot wire anemometer for flow measurements.
A. M. Porter BSc   +2 more
doaj   +1 more source

Initial study of an alternative technology aimed at measuring and controlling the flow rate in air conditioning ducts

open access: yesAdvances in Mechanical Engineering, 2021
This paper states that there might have around 1000 small size business jets (until nine occupants) flying across the world equipped with flow control and regulating shut-off valves that uses hot wire anemometer devices to regulate massflow rate from the
Andrei Testi   +3 more
doaj   +1 more source

Experimental investigation of co-flow jet's airfoil flow control by hot wire anemometer.

open access: yesReview of Scientific Instruments, 2019
An experimental flow control technique is given in this paper to study the jet effect on the coflow jet's airfoil with injection and suction and compared with the jet-off condition.
A. Bahrami   +4 more
semanticscholar   +1 more source

Relaminarization of accelerated turbulent boundary layer under favorable pressure gradient with sink flow type (Coherent structure and two-point statistics)

open access: yesNihon Kikai Gakkai ronbunshu, 2022
The relaminarization process of a turbulent boundary layer under a sink flow was investigated experimentally. The boundary layer was accelerated because of the contraction of the flow area. The mean and fluctuating velocity components were measured using
Masashi ICHIMIYA   +2 more
doaj   +1 more source

Hot-film/hot-wire anemometer calibration for low velocities using image processing

open access: yesScientia Iranica. International Journal of Science and Technology, 2019
Calibration of hot-wire and hot-film probes at low velocities is a difficult task because the dynamic pressure at these velocities is very low and may not be measured easily.
M. Behzadi, M. H. Ahmadi, F. Ommi
semanticscholar   +1 more source

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