Experimental results are presented for the flow of an incompressible Newtonian fluid, with full admission, between closely spaced corotating disks. The radial pressure distribution is shown to coincide very closely with analytical results for laminar flow earlier presented by other investigators, over a wide range of the parameters pertinent to the flow description. A referenced analytical model for laminar flow between corotating disks is thus given credence. The experimental arrangement and procedure are described and a supporting uncertainty analysis is presented.

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