Is the wet perimeter the perimeter of the water-crossing cross-section? Is that correct?
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Is the wet perimeter the perimeter of the water-crossing cross-section? Is that correct?
The wet perimeter is the perimeter of the water-crossing cross-section; this statement is incorrect. The wet perimeter is actually the perimeter of the part of the solid walls of the water-crossing cross-section that are in contact with the liquid
No, I checked it~ 1. The wet perimeter is the length at which the water flow is in contact with the solid boundary; it is equal to the cross-sectional area A divided by the hydraulic radius R. This is the first formula. 2. A is determined from flow rate and velocity; the hydraulic radius R is half of the radius r of a circle whose circumference equals the wet perimeter~~~~ R can be expressed in terms of the wet perimeter. 3. By combining these two equations, a quadratic function that contains only the unknown wet perimeter X is obtained, allowing the wet perimeter to be calculated~~
The perimeter line where the fluid comes into contact with the solid wall surface at the flow cross-section is called the wetted perimeter. It is commonly denoted by the Greek letter χ. The wetted perimeter is one of the important hydraulic parameters of the flow cross-section; the larger the wetted perimeter, the greater the flow resistance and head loss.