Laminar Flow

In fluid dynamics, laminar flow is a flow regime characterized by high momentum diffusion, low momentum convection, and fluid particles travel along well ordered non intersecting paths. It is important to know if the fluid flow is laminar, transitional or turbulent when calculating heat transfer or pressure and head loss. Laminar flow, sometimes known as streamline flow, occurs when a fluid flows in parallel layers, with no disruption between the layers. First, we normally associate a laminar flow with a smooth surface and a turbulent flow with a rough one.