huangyhg

fluid force on tank baffle plates
hello,
i am looking for a good reference for hand calculation of fluid forces acting on baffle plates for a tank with 4 mixers. i have read in several places that there are a couple of approaches to determining the baffle plate loads. this involves using either the torque/power input from the mixers or using the fluid velocity, presumably from a cfd, unless there is a way to calculate it based on the mixer tip velocity. i just can't find any formulas online for estimating these loads. thanks for any help.


i noticed at one of the trade shows, one of the mixer manufacturers had artwork from a cfd analysis showing how their mixer was better than the other guy's. this suggests that the mixer manufacturers might be a good place to start for this kind of information.
i also seem to recall that in boundary layer methods class, the analysis of a jet impinging on a flat plate was one of the classic problems considered. if your geometry is such that you can approximate it as this case, you can perhaps find a ready-made solution in a textbook or reference book dealing with the topic.
on the mixer company's cfd artwork, i believe one of the points they were pushing was that their mixer made a less diffused flow- ie, more focused stream- which would be one thing to consider in dealing with the blm solution.
"when a jet of water strikes a flat plate perpendicularly to its surface, the force exerted by the water on the plate is wv/g, where w is the weight of water striking the plate in a unit of time and v is the velocity" (marks standard handbook for mechanical engineers, ninth edition, page 3-22)

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