[Roule]

hi, i just have a simple question:

does the velocity profile in the y (vertical) and z (lateral) directions have the same shape as the velocity in the x direction (longitudinal)?

is the log law applicable in all the 3 directions, or only in the x-direction?
if they are different, can anyone give me the equations for the y, z directions.

or can anyone just recommend some journal paper or something which has more info. on this. wherever i search i am only getting the profile for x-direction.

thanks a lot :-)

[FMDenaro]

Originally Posted by Roule

hi, i just have a simple question:

does the velocity profile in the y (vertical) and z (lateral) directions have the same shape as the velocity in the x direction (longitudinal)?

is the log law applicable in all the 3 directions, or only in the x-direction?
if they are different, can anyone give me the equations for the y, z directions.

or can anyone just recommend some journal paper or something which has more info. on this. wherever i search i am only getting the profile for x-direction.

thanks a lot :-)

over a wall-bounded turbulen flow, the log law is only for the statistically averaged streamwise velocity component and the profile is represented along the normal-to-wall direction. The other velocity component tend to zero when statistically averaged.

[Roule]

thanks a lot for the answer. solved a lot of other doubts :-)