Letter to the Editor
Copyright ©The Author(s) 2025.
World J Gastroenterol. Mar 21, 2025; 31(11): 101743
Published online Mar 21, 2025. doi: 10.3748/wjg.v31.i11.101743
Table 1 Flow rate related to Hagen-Poiseuille’s laminar flow
Q= (πR4 ΔP)/8 μL
Q = Volumetric flow rate (m³/second)
R = Tube radius (m)
ΔP = Pressure difference across the tube (Pa)
μ = Dynamic viscosity of the fluid (Pa)
L = Tube length (m)