He's asking for higher than 40m/s.anorlunda said:
The alternative to an anemometer I suggested above is a DIY pito-static tube, but for a commercial version of it, you can buy a pito-static tube and digital manometer. I have these:anorlunda said:
How? 12 inch diameter means 6 inch radius and that means 15.24 cm i.e. 0.1524 m. Therefore area is 3.14 X (0.1524)^2. 65% of 60 W is 39 W. Now, it's (39/(0.5 X 1.2474 X 3.14 X (0.1524)^2)^(1/3). Calculate it yourself.russ_watters said:
Don't be so aggressive, I'm trying to help. Of course I calculated it myself. But yep, you're right, I did a conversion wrong. 9.5 m/s is correct.T C said:
anorlunda said:
russ_watters said:
Tom.G said:Measure the force of the air hitting a flat surface and use an online wind force calculator.
https://www.engineeringtoolbox.com/wind-load-d_1775.html
That one is in metric so if you use a square of cardboard 3 inches on a side the area is 0.0058 Sq. meters. plugging that in, a 40m/s wind would yield a force of 5.57n, or 1.252lbs, or 20oz.
There are probably other websites that use English units and can convert the other direction, but I had to leave SOME of the work to you!
Cheers,
Tom
p.s. Please let us know the measurement/calculated results you get.
boneh3ad said:
Tom.G said:
Ouch! Do you know of one that is accurate?
As for who makes them, a WhoIs lookup shows: "Registrant Name: Registration Private"
High velocity airflow is typically measured using an anemometer, which is a device that measures the speed of airflow. There are different types of anemometers, such as hot wire, pitot tube, and vane anemometers, that use different principles to measure airflow.
High velocity airflow is typically measured in meters per second (m/s) or feet per minute (ft/min). Other units such as kilometers per hour (km/h) or miles per hour (mph) may also be used, depending on the specific application.
The definition of high velocity airflow may vary depending on the context and application. Generally, an airflow with a speed above 10 meters per second (m/s) or 2000 feet per minute (ft/min) can be considered high velocity. However, this may differ for specific industries or research purposes.
The accuracy of measurements of high velocity airflow depends on several factors, such as the type of anemometer used, the calibration of the instrument, and the environmental conditions. Generally, modern anemometers have a high level of accuracy, with some models having an error margin of less than 1%.
Measuring high velocity airflow is important in various industries, such as aerospace, HVAC (heating, ventilation, and air conditioning), and automotive. It is also used in research and development for studying fluid dynamics and aerodynamics. Additionally, measuring high velocity airflow is crucial for safety and efficiency in wind tunnels, wind farms, and other similar environments.