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Dynamic Pressure Equation:
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Dynamic pressure is the kinetic energy per unit volume of a fluid particle. It represents the pressure increase when a flowing fluid is brought to rest isentropically. In pipe flow, it's an important component of the total pressure along with static pressure.
The calculator uses the dynamic pressure equation:
Where:
Explanation: The equation calculates the pressure resulting from fluid motion, where the pressure increases with the square of velocity and linearly with fluid density.
Details: Dynamic pressure calculation is crucial for pipe system design, flow measurement, aerodynamic calculations, and understanding energy distribution in fluid systems. It helps determine pressure losses, pump requirements, and system performance.
Tips: Enter fluid density in kg/m³ (water ≈ 1000 kg/m³, air ≈ 1.2 kg/m³) and velocity in m/s. Both values must be positive numbers.
Q1: What's the difference between dynamic and static pressure?
A: Static pressure is the pressure exerted by a fluid at rest, while dynamic pressure is the pressure due to fluid motion. Total pressure is the sum of both.
Q2: How does dynamic pressure relate to Bernoulli's principle?
A: Bernoulli's principle states that total pressure (static + dynamic) remains constant along a streamline for incompressible, inviscid flow.
Q3: What are typical dynamic pressure values in pipe systems?
A: Values vary widely based on application. Water systems typically have dynamic pressures from 100-10,000 Pa, while HVAC systems range from 10-500 Pa.
Q4: Does dynamic pressure affect pipe material selection?
A: Yes, high dynamic pressures can cause vibration, noise, and fatigue, influencing material choice and pipe support design.
Q5: Can this calculator be used for compressible fluids?
A: This equation is primarily for incompressible fluids. For compressible fluids at high velocities, more complex equations accounting for compressibility effects are needed.