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Pressure Loss due to Sudden Contraction at point 1 due to friction is the decrease in the value of the pressure due to the influence of friction when there's a sudden reduction in cross-sectional area in a flow system.
The calculator uses the formula:
Where:
Explanation: The formula calculates the pressure loss that occurs when fluid flows through a sudden contraction in a pipe or duct system, accounting for the velocity at the upstream section and the dynamic loss coefficient.
Details: Accurate pressure loss calculation is crucial for designing efficient fluid flow systems, optimizing energy consumption, and ensuring proper system performance in HVAC, plumbing, and industrial applications.
Tips: Enter velocity of air at section 1 in m/s and dynamic loss coefficient. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What causes pressure loss in sudden contractions?
A: Pressure loss occurs due to flow separation, turbulence, and energy dissipation when fluid passes through a sudden reduction in cross-sectional area.
Q2: How is the dynamic loss coefficient determined?
A: The dynamic loss coefficient is typically determined experimentally and depends on the contraction ratio and flow conditions.
Q3: Does this formula apply to liquids as well as air?
A: Yes, the formula applies to both gases and liquids, though the constant (0.6) and loss coefficient may vary depending on fluid properties.
Q4: What are typical values for dynamic loss coefficient?
A: Dynamic loss coefficients for sudden contractions typically range from 0.1 to 0.5, depending on the contraction ratio and flow conditions.
Q5: How does this pressure loss affect system design?
A: Pressure losses must be accounted for when sizing pumps, fans, and other equipment to ensure adequate flow rates throughout the system.