物理

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Bernoulli Equation Calculator.

Solve the ideal incompressible Bernoulli equation for outlet pressure.

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02 / 答案

Point 1 pressure

Point 1 velocity

Point 1 elevation

Point 2 velocity

Point 2 elevation

Fluid density

Gravitational acceleration

pressure2

179,693.350000

pressureHead2

18.323622

Use Cases

Engineering Fluid Flow Analysis

Determine the pressure at a downstream point in a pipe or channel when flow conditions and elevations are known, assuming ideal flow.

Example: Calculate outlet pressure in a water pipe with known inlet pressure and velocities.

Educational Problem Solving

Verify textbook or homework problems involving Bernoulli's principle for incompressible flow.

Example: Check the pressure change when fluid speeds up and rises in elevation.

Frequently Asked Questions

What does the Bernoulli equation calculator do?: It solves the ideal incompressible Bernoulli equation for the outlet pressure (point 2 pressure) given the pressure, velocity, and elevation at point 1, the velocity and elevation at point 2, fluid density, and gravitational acceleration.
What units are used in this calculator?: Pressure is in pascals (Pa), velocity in meters per second (m/s), elevation in meters (m), fluid density in kilograms per cubic meter (kg/m³), and gravitational acceleration in meters per second squared (m/s²).
Can this calculator be used for real fluids?: No, it assumes an ideal incompressible fluid with no viscosity or friction losses. For real fluids, additional terms like head loss would be needed.

Tips & Common Mistakes

Tips

Ensure all input values are in the specified units: Pa, m/s, m, kg/m³, and m/s².
Use consistent reference points: point 1 is upstream, point 2 is downstream.
For accurate results, verify that the flow is steady and frictionless as assumed by the ideal Bernoulli equation.

Common Mistakes to Avoid

Forgetting to convert pressure to pascals if using other units like psi or bar.
Using gauge pressure instead of absolute pressure without adjusting for atmospheric pressure.
Neglecting to account for elevation changes when they are significant.

Last updated: August 13, 2026

Use Cases

Engineering Fluid Flow Analysis

Determine the pressure at a downstream point in a pipe or channel when flow conditions and elevations are known, assuming ideal flow.

Example: Calculate outlet pressure in a water pipe with known inlet pressure and velocities.

Educational Problem Solving

Verify textbook or homework problems involving Bernoulli's principle for incompressible flow.

Example: Check the pressure change when fluid speeds up and rises in elevation.

Frequently Asked Questions

What does the Bernoulli equation calculator do?

It solves the ideal incompressible Bernoulli equation for the outlet pressure (point 2 pressure) given the pressure, velocity, and elevation at point 1, the velocity and elevation at point 2, fluid density, and gravitational acceleration.

What units are used in this calculator?

Pressure is in pascals (Pa), velocity in meters per second (m/s), elevation in meters (m), fluid density in kilograms per cubic meter (kg/m³), and gravitational acceleration in meters per second squared (m/s²).

Can this calculator be used for real fluids?

No, it assumes an ideal incompressible fluid with no viscosity or friction losses. For real fluids, additional terms like head loss would be needed.

Tips & Common Mistakes

Tips

Ensure all input values are in the specified units: Pa, m/s, m, kg/m³, and m/s².
Use consistent reference points: point 1 is upstream, point 2 is downstream.
For accurate results, verify that the flow is steady and frictionless as assumed by the ideal Bernoulli equation.

Common Mistakes to Avoid

Forgetting to convert pressure to pascals if using other units like psi or bar.
Using gauge pressure instead of absolute pressure without adjusting for atmospheric pressure.
Neglecting to account for elevation changes when they are significant.

Use Cases

Engineering Fluid Flow Analysis

Determine the pressure at a downstream point in a pipe or channel when flow conditions and elevations are known, assuming ideal flow.

Example: Calculate outlet pressure in a water pipe with known inlet pressure and velocities.

Educational Problem Solving

Verify textbook or homework problems involving Bernoulli's principle for incompressible flow.

Example: Check the pressure change when fluid speeds up and rises in elevation.

Frequently Asked Questions

What does the Bernoulli equation calculator do?

What units are used in this calculator?

Can this calculator be used for real fluids?

No, it assumes an ideal incompressible fluid with no viscosity or friction losses. For real fluids, additional terms like head loss would be needed.

Tips & Common Mistakes

Tips

Ensure all input values are in the specified units: Pa, m/s, m, kg/m³, and m/s².
Use consistent reference points: point 1 is upstream, point 2 is downstream.
For accurate results, verify that the flow is steady and frictionless as assumed by the ideal Bernoulli equation.

Common Mistakes to Avoid

Forgetting to convert pressure to pascals if using other units like psi or bar.
Using gauge pressure instead of absolute pressure without adjusting for atmospheric pressure.
Neglecting to account for elevation changes when they are significant.