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channel flow-velocity in the wall

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Old   July 1, 2010, 13:20
Default channel flow-velocity in the wall
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Hi all.

I am modelling a channel where the bottom consists of many triangles equally spaced. I have already a solution. When I plot a velocity vector the profile seems correct because there`s no velocity in the bottom (using hybrid values). However, when I export a .dat profile (using hybrid or conservative) the velocity in the wall (y=0) is not zero. In the documentation it says that for quantitative calculations one should use conservative values. My objective is to do a spatial average of several velocity profiles along the channel.

What is the best option/way for this objective?Using conservative values and consider the first point where y=0 (with u different from zero) garbage? A light would be very helpful.

Many thanks

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