免费文丘里流量计计算器

根据文丘里管的截面和压差计算流量。

Pa
kg/m3
m2
m2

Velocity at Wide Section

1.8257 m/s

体积流量0.018257 m3/s

Velocity at Wide Section vs Pressure Difference

查看公式 →

公式

## Venturi Meter A Venturi meter measures flow rate by measuring the pressure drop in a constriction. ### Formula From Bernoulli + continuity (A1 v1 = A2 v2): **v1 = sqrt(2 dP / (rho ((A1/A2)^2 - 1)))** The flow rate is Q = A1 * v1.

计算示例

Water, A1 = 0.01 m2, A2 = 0.005 m2, dP = 5000 Pa.

  1. 01(A1/A2)^2 = (0.01/0.005)^2 = 4
  2. 02v1 = sqrt(2 * 5000 / (1000 * 3))
  3. 03v1 = sqrt(10000 / 3000)
  4. 04v1 = sqrt(3.333) = 1.826 m/s
  5. 05Q = 0.01 * 1.826 = 0.01826 m3/s