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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's a concept in fluid dynamics that represents the pressure increase when a fluid in motion is brought to rest isentropically.
The calculator uses the dynamic pressure equation:
Where:
Explanation: The equation calculates the pressure resulting from fluid motion, which is proportional to the square of the velocity and directly proportional to the fluid density.
Details: Dynamic pressure is crucial in aerodynamics, hydrodynamics, and various engineering applications. It's used in calculating lift and drag forces, designing piping systems, and analyzing fluid flow in various contexts.
Tips: Enter fluid density in kg/m³ and velocity in m/s. Both values must be positive numbers. Common fluid densities: air ≈ 1.225 kg/m³, water ≈ 1000 kg/m³.
Q1: What's the difference between static and dynamic pressure?
A: Static pressure is the pressure of a fluid at rest, while dynamic pressure is the pressure component due to the fluid's motion.
Q2: How is dynamic pressure related to Bernoulli's principle?
A: Bernoulli's equation states that the sum of static pressure, dynamic pressure, and hydrostatic pressure remains constant along a streamline for an incompressible fluid.
Q3: What are typical applications of dynamic pressure calculations?
A: Aircraft design, wind load calculations, HVAC systems, water distribution networks, and many fluid flow analyses in engineering.
Q4: Why does dynamic pressure increase with the square of velocity?
A: Because kinetic energy (½mv²) increases with velocity squared, and dynamic pressure represents kinetic energy per unit volume.
Q5: How does fluid density affect dynamic pressure?
A: Higher density fluids generate higher dynamic pressures at the same velocity because they contain more mass per unit volume.