What is hydrodynamically developed region?
In this region the velocity profile develops and thus the flow is called the hydrodynamically developing flow. After this region, the velocity profile is fully developed and continues unchanged. This region is called the hydrodynamically fully developed region.
How does the pressure change axially in a fully developed pipe flow?
In the fully developed section of the pipe the pressure falls linearly with distance, i.e. the pressure gradient Dp/L (pressure difference between two stations distance L apart divided by L) is constant. In this region also the pressure gradient increases linearly with flow-rate 0 (Fig. 5.2 (b)).
What does fully developed flow mean?
Fully developed flow implies that the velocity profile does not change in the fluid flow direction hence the momentum also does not change in the flow direction. In such a case, the pressure in the flow direction will balance the shear stress near the wall.
Is laminar flow fully developed?
When a flow is fully developed it will have the same velocity profile at any cross-section within the pipe. This statement is true for both laminar flow and turbulent flow. For example, by using the velocity profile the pressure drops, flow rates, and head loss can be determined. …
Why is there no slip condition?
In fluid dynamics, the no-slip condition for viscous fluids assumes that at a solid boundary, the fluid will have zero velocity relative to the boundary. The fluid velocity at all fluid–solid boundaries is equal to that of the solid boundary.
What is the difference between Streamline and turbulent flow?
This video explains streamline flow and the ideal motion of an ideal fluid….
| S. No | Turbulent flow | Streamline Flow |
|---|---|---|
| 1. | The velocity of liquid is high and unsteady. | The velocity of liquid is low and steady. |
| 2. | Velocity of liquid is greater than the critical velocity. | Velocity of liquid is below its critical velocity. |
What is streamline flow?
A streamline flow or laminar flow is defined as one in which there are no turbulent velocity fluctuations. These streamlines are drawn such that, at any instant in time, the tangent to the streamline at any one point in space is aligned with the instantaneous velocity vector at that point.
Which of the following is correct a streamline can intersect itself and two streamlines can cross a Streamline Cannot intersect itself but two streamlines can cross a Streamline can intersect itself but two streamlines Cannot cross a Streamline Cannot intersect itself?
a)A streamline can intersect itself and two streamlines can crossb)A streamline cannot intersect itself but two streamlines can crossc)A streamline can intersect itself but two streamlines cannot crossd)A streamline cannot intersect itself and two streamlines cannot crossCorrect answer is option ‘D’.
Which factor can cause turbulent blood flow?
Risk factors that increase turbulence, such as plaque build-up or hardening of the arterial walls, serve to increase vascular resistance (sometimes referred to as SVR or systemic vascular resistance) and result in increased blood pressure, reduced blood flow, and an increased workload for the heart….