S.I.Kril, V.P.Berman Relationship between probabilistic and spatial-temporal mean values for turbulent suspension flow |
Applied hydromechanics, Vol. 3 (75) ¹ 3, (2001) |
| A partial differential equation has been set up relating the probability-averaged mean value to the spatial-temporal-averaged one for the nonuniform stationary field of an averaged hydrodynamic quantity of turbulent suspension flow. Based on it, a method has been developed of transformation of empirical spatial-temporal mean values into probabilistic ones with allowance made for the influence of hydrodynamic quantity field nonuniformity as well as of the averaging volume form and size on the relative difference of the studied mean values from each other. A condition has been found wherein empirical spatial-temporal mean values by its magnitude practically coincide with probabilistic ones, and in this case the spatial-temporal mean values measured can be used for comparing results of the turbulence statistical model. |
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| TEXT LANGUAGE: Russian |