I'm trying to find out too :P But iv'e found this link :)
http://www.geographyteachingtoday.org.uk/fieldwork/resource/fieldwork-techniques/rivers/cross-sections/
With wetted perimeter you simple use a measure tape and starting from one bank you run the tape along the sides and base of the channel including any bumps/holes you come across.
It is important to measure area and perimeter or perimeter and area same thing any ways it's important because if you don't you will never find your answer
4 yards/12 feet
A perimeter is a length. It cannot be expressed in terms of area.
Cellulose acetate is easily wetted.
The width of a river will generally be measured in feet or meters, depending on if you use Imperial or Metric.
The greater the wetted perimeter, the more friction the water encounters with the bed and sides. This reduces the speed of the river.
Because the Width and Depth both increase downstream. This means the wetted perimeter will also increase.
The speed of a river is affected by the amount of friction slowing down the water and the grade or fall of the river. The amount of friction is determined by how rough the bed or wetted perimeter is, and how big the perimeter is. A wide shallow river or a very deep and narrow river with the same volume and grade will be in contact with similar areas of river bed, causing the same amount of friction. But a river with a semi circular shape in cross section and the same volume and grade will have less contact area with the river bed and will therefore have less friction and be faster. The steeper the grade of the river, the faster it will flow.
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
No, it increases as there is more water in the channel.
Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.
to measure the perimeter we need a figure with boundaries and all the sides with dimensions
in math terms, the perimeter is the measure around the shape.
measure the length and the width
Perimeter is in feet and not in square feet
The measure of a perimeter can be any positive number.
It is important to measure area and perimeter or perimeter and area same thing any ways it's important because if you don't you will never find your answer