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Dynamic Pressure Formula:
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Dynamic Pressure is a property of a moving fluid flow. It is defined as the kinetic energy per unit volume of a fluid. In incompressible flow, it represents the pressure increase when fluid velocity is reduced to zero isentropically.
The calculator uses the dynamic pressure formula:
Where:
Explanation: The formula calculates dynamic pressure by subtracting the static pressure from the total pressure at a given point in the fluid flow.
Details: Dynamic pressure calculation is crucial in fluid dynamics for determining flow energy, designing aerodynamic systems, calculating lift and drag forces, and analyzing fluid flow behavior in various engineering applications.
Tips: Enter total pressure and static pressure values in Pascal units. Both values must be non-negative numbers. The calculator will compute the dynamic pressure difference between these two values.
Q1: What is the difference between static and dynamic pressure?
A: Static pressure is the pressure exerted by a fluid when it is at rest, while dynamic pressure is the pressure component due to the fluid's motion.
Q2: Can dynamic pressure be negative?
A: No, dynamic pressure represents kinetic energy and is always a positive value or zero when there's no flow.
Q3: How is dynamic pressure related to fluid velocity?
A: For incompressible flow, dynamic pressure is directly proportional to the square of the fluid velocity (\( q = \frac{1}{2}\rho v^2 \)), where ρ is fluid density.
Q4: What are typical applications of dynamic pressure measurement?
A: Applications include aircraft airspeed indicators, wind tunnel testing, HVAC system design, and flow measurement in pipes and channels.
Q5: Does this formula work for compressible flows?
A: This simple formula is specifically for incompressible flows. Compressible flows require more complex equations that account for density changes.