O.A.Riabenko Problems and paradoxes of near critical fluid flow |
Applied hydromechanics, Vol. 13 (85) ¹ 4, (2011) |
| Near-critical fluid flows are considered which had been studied insufficiently in theoretical and experimental aspects. A concise review of works is given, the actuality of the problem is pointed out. Existing relationships used to describe the profile of flow free surface are analyzed in detail. Problems are elucidated of the present-day state of the theory practice of near-critical flows. Paradoxes are formulated emerging at the attempt do describe all phenomena of the discussed class from common positions. The essence of revealed paradoxes is displayed on the basis of experimental research. It is shown that for the proper description of fluid near-critical flows in addition to Froude number in the initial section of these flows it is necessary to take into account also the streamline inclination and curvature in the same section. |
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KEY WORDS: near-critical fluid flows, profile of flow free surface |
| TEXT LANGUAGE: Ukrainian |