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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Computer Treatment of the Viscometric Data Displaying Apparent Wall Slip Effect
 Večeř, Marek ; Wein, Ondřej
In the present poster and a PC show, we demonstrate such software designe to support all available sensors (Z,PP, and CP) of HAAKE RS rotational rheometres, and including one novel (KK) sensor, designed specially for the liquids displaying AWS effect. The primary data, including the related calibration parameters, are extracted from the HAAKE RheoWin ASCII export and further treated in a plot-supportin dialogue mode, including selection/discrimination of a new 8-parameter model, representing the Fluidity&Slip viscometric material functions.
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Effect of Apparent Wall Slip on Normal-Stress Viscometric Data
 Wein, Ondřej
In the present lecture, we attempt for the first time to analyze the AWS effect on normal-stress data for the parallel-plates rotational instrument, using 2D numerical simulations. The related problem for the viscosity data is recalled from the previous reports. For the narrow-gap configurations, h/R <<1, the simple formulas of the one-gradient approximation give an aceptable agreement of the predicted torque M axial thrust F with the correct 2D theory and, hence, they seem to be acceptable in interpreting the primary rheometical data.
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