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Falling Speed refers to the constant speed at which a particle falls through a fluid (liquid or gas) when the force of gravity is balanced by the drag force and buoyant force acting on the particle.
The calculator uses the formula:
Where:
Explanation: This formula calculates the falling speed of a particle by multiplying the settling velocity by the area and dividing by the cross-sectional area.
Details: Calculating falling speed is crucial for understanding particle behavior in fluids, designing sedimentation systems, and analyzing fluid dynamics in various engineering applications.
Tips: Enter settling velocity in m/s, area in m², and cross-sectional area in m². All values must be positive numbers greater than zero.
Q1: What is the difference between falling speed and settling velocity?
A: Settling velocity refers to the terminal velocity of a particle in still fluid, while falling speed is the calculated speed based on the given formula that considers surface area relationships.
Q2: What units should be used for input values?
A: All input values should use consistent SI units: meters per second (m/s) for velocities and square meters (m²) for areas.
Q3: When is this calculation typically used?
A: This calculation is commonly used in fluid mechanics, sedimentation studies, particle analysis, and environmental engineering applications.
Q4: Are there limitations to this formula?
A: This formula assumes ideal conditions and may need adjustments for non-spherical particles, turbulent flow conditions, or highly viscous fluids.
Q5: Can this calculator be used for gases as well as liquids?
A: Yes, the formula applies to both liquid and gas fluids, though the settling velocity value should be appropriate for the specific fluid medium.