What is the difference between laminar and turbulent airflow




















In Turbulent flow fluid layers do not moves in Straight. Turbulent flow is mixing with each other during flow time. Reynolds numbe Of laminar flow low than turbulent flow. Reynolds number of turbulent flow is more than laminar flow. In laminar flow Fluid particles not mixed. Laminar flow is move continuously and constant. Turbulent flow is move randomly in zigzag manner. Laminar flow shear stress depend on only viscosity of fluid.

Turbulent flow shear stress depend on density of the fluid. Laminar flow is occurs when fluid flows with Low velocity. Turbulent flow is occurs when fluid flows with high velocity.

Laminar flow is generally occurs when Flow pipe diameter is small. Turbulent flow is generally occurs when flow pipe diameter is larger. Laminar flow Velocity Profile is parabolical curve. Turbulent flow velocity profile is longtime curve. The water spreads, to cover more area but the flow becomes irregular. Another difference between the flows is that laminar flow is maximum at the center while the rate becomes low at the ends.

In the case of turbulent flow, the rate of flow is maximum at the ends while it is the slowest in the middle. When a person smokes a cigarette, the smoke comes out of it. If careful observation is made it can be seen that the smoke is not irregular and follows a similar trajectory, this is known as laminar flow.

One, in which the fluid follows a straight path and there are no distractions in the flow, this can be made possible in industry by using another fluid which keeps the surface of pipes smooth. Velocity is constant at every point in a laminar flow and the flow reaches its maximum in the middle and slows down when it reaches the end surfaces. Once the smoke from the cigarette is out after following a straight path for some time it tends to waver at a particular point, this then becomes a turbulent flow.

One, in which there is no smoothness in the way the fluid flows and the pipes which are used in industry have rough surfaces. This flow can be helpful in some applications but mostly is considered inefficient. The velocity changes at every instant in the turbulent flow while it has the maximum rate at the end, the rate is slower in the central region because of many irregularities.

The fluid flow is laminar when the value of Reynolds number Re is less than The fluid flow is turbulent when the value of Reynolds number is greater than Shear stress in laminar flow depends only on the viscosity of the fluid and independent of the density. Shear stress in the turbulent flow depends upon the density of the fluid. The fluid flow is very orderly i. The fluid flow is not orderly i. For better explanation watch the video given below:. This is all about the difference between laminar and turbulent flow.



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