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Settling velocity refers to the terminal velocity of a particle in still fluid. It is the constant speed at which a particle falls through a fluid 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: The formula calculates the settling velocity by dividing the falling speed of the particle by the removal ratio, which represents the efficiency of particle removal in sedimentation processes.
Details: Accurate calculation of settling velocity is crucial for designing sedimentation tanks, understanding particle behavior in fluids, and optimizing separation processes in water treatment and industrial applications.
Tips: Enter falling speed in m/s and removal ratio (dimensionless). Both values must be positive numbers greater than zero for accurate calculation.
Q1: What factors affect settling velocity?
A: Settling velocity is affected by particle size, density, fluid viscosity, and fluid density.
Q2: How is removal ratio determined?
A: Removal ratio is typically determined experimentally and represents the proportion of particles removed from a sedimentation system.
Q3: What are typical values for settling velocity?
A: Settling velocity values vary widely depending on particle characteristics, ranging from millimeters per second for fine particles to meters per second for larger particles.
Q4: Can this formula be used for all fluid types?
A: The formula is generally applicable for Newtonian fluids, but may need adjustments for non-Newtonian fluids or extreme conditions.
Q5: How does temperature affect settling velocity?
A: Temperature affects fluid viscosity and density, which in turn influence the settling velocity of particles.