伯努利动压降与文丘里流量压差计算器
利用 ΔP = 0.5 × ρ × (v₂² - v₁²) 计算文丘里管静压降、流体密度、上游流速或喉部流速。
Pressure differential P₁ - P₂ in Pascals
Fluid mass density in kg/m³ (Water = 1000, Air = 1.225)
Constricted high-speed flow velocity in m/s
Inlet approach velocity in m/s
分步代入计算过程
Along a horizontal streamline of inviscid incompressible flow, Bernoulli's principle states that accelerating a fluid from velocity v₁ to throat velocity v₂ produces a static pressure drop ΔP = 0.5 × ρ × (v₂² - v₁²).
常见参考标准值
Aircraft airspeed indicator fundamental equation
Low permanent head loss vs orifice plates (C_d ≈ 0.61)
Excessive throat velocity flashes liquid into vapor bubbles
20 行数值对照表
Static Pressure Drop (ΔP) · Fluid Density (ρ (kg/m³))
| # | Fluid Density (ρ (kg/m³)) | Static Pressure Drop (Pa) | Δ % |
|---|---|---|---|
| 01 | 0.1 | 1.8 Pa | -99.99% |
| 02 | 161.2782 | 2,903.01 Pa | -83.87% |
| 03 | 322.4564 | 5,804.22 Pa | -67.75% |
| 04 | 483.6347 | 8,705.42 Pa | -51.64% |
| 05 | 644.8129 | 11,606.63 Pa | -35.52% |
| 06 | 805.9911 | 14,507.84 Pa | -19.40% |
| 07 | 1,000.00 当前 | 18,000.00 Pa | 0.00% |
| 08 | 1,128.35 | 20,310.25 Pa | +12.83% |
| 09 | 1,289.53 | 23,211.46 Pa | +28.95% |
| 10 | 1,450.70 | 26,112.67 Pa | +45.07% |
| 11 | 1,611.88 | 29,013.88 Pa | +61.19% |
| 12 | 1,773.06 | 31,915.08 Pa | +77.31% |
| 13 | 1,934.24 | 34,816.29 Pa | +93.42% |
| 14 | 2,095.42 | 37,717.50 Pa | +109.54% |
| 15 | 2,256.60 | 40,618.71 Pa | +125.66% |
| 16 | 2,417.77 | 43,519.92 Pa | +141.78% |
| 17 | 2,578.95 | 46,421.12 Pa | +157.90% |
| 18 | 2,740.13 | 49,322.33 Pa | +174.01% |
| 19 | 2,901.31 | 52,223.54 Pa | +190.13% |
| 20 | 3,062.49 | 55,124.75 Pa | +206.25% |
常见问题解答 (FAQ)
如何使用在线 伯努利动压降与文丘里流量压差计算器 工具？+
输入已知参数或拖动滑块，即可在浏览器中实时计算并可视化 伯努利动压降与文丘里流量压差计算器（基于关系式 ΔP = 0.5 × ρ × (v₂² - v₁²)）。利用 ΔP = 0.5 × ρ × (v₂² - v₁²) 计算文丘里管静压降、流体密度、上游流速或喉部流速。
可以导出或打印 伯努利动压降与文丘里流量压差计算器 的结果吗？+
可以。支持一键复制数据、打印计算工作表或导出高清 SVG、PNG 和 CSV 文件。
我可以清空 伯努利动压降与文丘里流量压差计算器 中的示例数据并从空白状态开始吗？+
可以。点击工具顶部的“清空 / 空白开始”按钮即可重置所有输入项，随时也可一键重新加载示例数据。