Velocity profile is a factor, that you could find the velocity in any depth of fluid by changing the variable.
Basically, the profile of velocity not only shows you the magnitude of velocity but also shows you the characteristics of the flow like direction, change due to shape of the domain or increase-decrease in the velocity magnitude with respect to the geometry and so on. So in general, it helps you to understand how the fluid behave while it is transported through the domain.
Velocity profile is a factor that helps to know the nature of the fluid and direction of the fluid particles.
Basically, the profile of velocity not only shows you the magnitude of velocity but also shows you the characteristics of the flow like direction, change due to shape of the domain or increase-decrease in the velocity magnitude with respect to the geometry and so on. So in general, it helps you to understand how the fluid behave while it is transported through the domain.
velocity profile shows the difference in intensity of resistance of fluid particles across the flow, due to cohesive and adhesive forces.
geometrically it refers to line connecting tip of velocity vectors. It shows the resistance experienced by fluid normal to the direction of relative motion, since for a Newtonian flow it is directly proportional to rate of strain , region with lowest vector will have highest deformation, not because of viscosity but because of greater area of contact as those layer will be moving with lesser velocity,hence having more time to interact.
Sometimes I wonder are the questions are from high school ,undergraduate or postgraduate student...student are just lazy to look for answers from references
Well if you are writting in other than english language..create your site then, forget about sharing the knowledge. Keep the discussion universal.
@Reza Safavi Nick has given a very apt info abt velocity profile.....it simply shows you how the fluid is moving. this helps us in many aspects like......identifying the boundary layer, change in the flow direction, acceleration and deceleration of flow, flow seperation, etc. In other words "as graph is to an equation, same way a velocity profile is to a flow field"
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