Horizontal Osborne Reynolds Experiment - fluid mechanics

a fluid mechanic lab experiment, the Osborne Reynolds experiment, used to find the Reynolds number value to define the stat of the flow of fluid.
fluid flow can be classified into three regimes which are laminar, transitional, and turbulent regimes. The laminar flow is characterized by smooth streamlines and highly ordered motion, such that at any instant the velocity at all the points in particular lamina is the same. Usually, the lamina near the flow boundary moves at a slower rate as compared to those near the center of the flow passage. This type of flow occurs in viscous fluids. Turbulent flow is characterized by velocity fluctuations, intermixing of fluid particles, and highly disordered motion. The velocity of the particles changes from point to point and even at the same point from time to time. The transitional regime is where the flow fluctuates between laminar and turbulent before it becomes a fully turbulent flow. The transitional from laminar to turbulent flow is mainly dependent on flow velocity, surface temperature, geometry, surface roughness, and type of fluid. However, Osborne Reynolds confirmed that the flow regime mainly depends on the ratio of inertial forces to viscous forces. This ratio is what we call a Reynolds number.