![]() The flow profile is parabolic once laminar flow is fully developed. The lowest velocity (V=0) is found along the vessel wall. The highest velocity (Vmax) is found in the center of the vessel. It is characterized by concentric layers of blood moving in parallel down the length of a blood vessel. Laminar flow is the normal condition for blood flow throughout most of the circulatory system. In turbulent flow should be greater than 4000 Application of laminar and turbulent flow Flow in blood vessel Laminar flow So that the reynolds number in laminar flow should be less than 2000 also we should know the reynolds number ![]() The flow is primarily determined by reynolds number: This ratio is called the Reynolds number. The flow regime depends mainly on the ratio of inertial forces to viscous forces in the fluid. Other plumes behave similarly in below figure The flow regime in the first case is said to be laminar, characterized by smooth streamlines and highly ordered motion, and turbulent in the second case, where it is characterized by velocity fluctuations and highly disordered motion. If you have been around smokers, you probably noticed that the cigarette smoke rises in a smooth plume for the first few centimeters and then starts fluctuating randomly in all directions as it continues its rise. The streak-line also fluctuates randomly with time.so where considerable mixing occurs, velocities are high. When the fluid is moving faster, get an irregular streak-line which blurs and spreads the dye out. This flow situation is called laminar flow so Where the fluid moves slowly in layers in a pipe, without much mixing among the layers. When the fluid is moving slowest, get a well-defined streak-line. 3 Application of laminar and turbulent flow.
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