How do you calculate wind force?
Calculating Force Based on Wind Speed The mass of air hitting a surface then equals air density times area. The acceleration (a) equals the square of the wind speed in meters per second (m/s). Use the formula force (F) equals mass (m) times acceleration (a) to calculate the force in Newtons (N).
How do you calculate windage area?
Estimate windage area for a beam wind by multiplying length by freeboard and adding the profile area of the accommodation housing. For a head wind, multiply beam by freeboard and add the area of the bridge front.
How much force does wind exert?
Wind pressure is given by the equation P = 0.00256 x V2, where V is the speed of the wind in miles per hour (mph). The unit for wind pressure is pounds per square foot (psf). For example, if the wind speed is 70 mph, the wind pressure is 0.00256 x 702 = 12.5 psf.
What is windage area of a ship?
The windage area of a vessel or offshore structure is the area that is exposed directly to the wind. As is obvious, this is the area of all items above the waterline. This will include. Part of the hull/offshore structure above the waterline.
What type of force is wind?
In summary, the wind is controlled by the pressure gradient force (differences in barometric pressure), the Coriolis Force and friction. Wind speed is primarily dictated by the pressure gradient force, while all three controllers combine to guide the wind’s direction.
What force is 10 mph wind?
JetStream Max: Beaufort Wind Force Scale
| Beaufort Wind Force | Wind Average | British term |
|---|---|---|
| 0 | 0 | Calm |
| 1 | 2 kt 2 mph 3 km/h | Light air |
| 2 | 5 kt 6 mph 9 km/h | Light breeze |
| 3 | 9 kt 10 mph 16 km/h | Gentle breeze |
How do you calculate the area of a ship?
To find the surface area of the boat, you will first need to find the area of the rectangular part, then the area of the triangular part, and finally add the two together. Remember, as you are calculating the area, your units will be m2.
How do you calculate wind load on a vessel?
The wind forces are obtained by multiplying the projected area of each element, within each height zone by the basic wind pressure for that height zone and by the shape factor for that element. The total force on the vessel is the sum of the forces on all of the elements.
How do you calculate uplift force?
The uplift force on each outer post is (1/2 the span projection + the outer overhang) * (1/2 the span width + the side overhang) = (25% of the roof area) * the net uplift (all the uplift minus the self-weight or ‘dead load’).
What is displacement of a ship?
The displacement of a ship, D, is defined as the number of tones of water it displaces. The volume of displacement, V, is the underwater volume of a ship afloat i.e. the volume below the waterline. The weight and the displacement are equal in magnitude.
What are 4 types of force?
fundamental force, also called fundamental interaction, in physics, any of the four basic forces—gravitational, electromagnetic, strong, and weak—that govern how objects or particles interact and how certain particles decay.
