Laminar Flow Pressure Drop Calculator
Laminar Flow Pressure Drop Calculator computes the pressure drop in a laminar flow through a circular pipe. Input the dynamic viscosity, pipe length, volumetric flow rate, and pipe radius, select their units, and calculate the pressure drop.
Enter Parameters
How to Use Laminar Flow Pressure Drop Calculator:
- Enter the dynamic viscosity, pipe length, volumetric flow rate, and pipe radius using the keypad or direct input; use “Next” to switch fields.
- Select appropriate units for each parameter (e.g., Pa·s, mPa·s, cP for viscosity; m, cm, mm for length and radius; m³/s, cm³/s, L/s for flow rate).
- Click “Calculate” to see step-by-step results.
- Use “Share Result” to get shareable text or “Copy Result” to copy to clipboard.
Formula:
Pressure Drop (ΔP):
ΔP = (8 μ L Q) / (π r⁴)
Where: μ = dynamic viscosity (Pa·s), L = pipe length (m), Q = volumetric flow rate (m³/s), r = pipe radius (m)
Important Notes:
- Inputs for viscosity, length, flow rate, and radius must be positive numbers. Invalid inputs will trigger an error.
- The calculator assumes laminar flow in a circular pipe, which is valid for low Reynolds numbers (typically Re < 2000).
- The pressure drop is given in Pascals (Pa).
- Clipboard access requires a secure context (HTTPS). If copying fails, try accessing over HTTPS or copy manually.