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Static Pressure Formula:
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Static Pressure at Point 1 refers to the pressure exerted by a fluid at a specific location in a system, where the fluid is not in motion or has zero velocity. In incompressible flow, it represents the actual thermodynamic pressure at that point.
The calculator uses the Static Pressure formula:
Where:
Explanation: The equation calculates static pressure by subtracting the dynamic pressure component from the total pressure in the fluid flow system.
Details: Accurate static pressure calculation is crucial for fluid system design, flow measurement, and understanding pressure distribution in piping systems and aerodynamic applications.
Tips: Enter total pressure and dynamic pressure values in Pascal units. Both values must be valid non-negative numbers.
Q1: What is the difference between static and dynamic pressure?
A: Static pressure is the pressure when the fluid is at rest, while dynamic pressure represents the kinetic energy per unit volume of the moving fluid.
Q2: When is the incompressible flow assumption valid?
A: The incompressible flow assumption is generally valid for liquids and for gases at low Mach numbers (typically Ma < 0.3).
Q3: What are typical units for pressure measurement?
A: While Pascal is the SI unit, pressure is often measured in bars, psi, mmHg, or atm depending on the application field.
Q4: How does static pressure relate to Bernoulli's principle?
A: Bernoulli's principle states that an increase in fluid speed occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy.
Q5: Can this calculator be used for compressible flows?
A: No, this calculator uses the incompressible flow assumption. For compressible flows, more complex equations involving density changes are required.