The term “Volume flow rate per unit length” refers to the amount of fluid that flows through a given cross-sectional area in a pipe or conduit per unit length of that pipe. It is often denoted by the symbol Λ (capital lambda). Volume flow rate per unit length (Λ) is a measure of the amount of fluid that passes through a specific cross-sectional area of a pipe or conduit per unit length of that pipe. It is a parameter used to characterize and compare fluid flow in different pipes or channels while accounting for their varying lengths.
- Λ is the volume flow rate per unit length
- v̇ is the rate of volume flow
- l is the length