In wind tunnel tests, low-pressure differential readings in the range of 1.0-120 Pa, spanning speeds of 3 to 10 m/s at angles of attack of 20 to +25, were fully functional.
To calculate the wind pressure on a structure, use the formula below: q = K x V2 = coefficient of exposure x fundamental wind speed c fundamental wind speed. Although the train moves a lot of air, it cannot escape the tunnel quickly enough. Pressure increases as a result. Commonly used to express pressure readings is the unit of psi, which can be either imperial or English. It stands for pounds per square inch and is equivalent to about 6890 Pascals. The speed of the wind and atmospheric pressure are closely correlated. The pressure gradient is steeper and the wind speed is larger the bigger the difference in air pressure between the two places. slower is the pressure gradient the softer
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