A study by a double-refraction method of the development of turbulence in a long circular tube | Zendy

A. M. Binnie | Zendy; Joanna S. Fowler | Zendy

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A study by a double-refraction method of the development of turbulence in a long circular tube

Author(s) -

A. M. Binnie,

Joanna S. Fowler

Publication year - 1947

Publication title -

proceedings of the royal society of london a mathematical and physical sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.814

H-Index - 135

eISSN - 2053-9169

pISSN - 0080-4630

DOI - 10.1098/rspa.1947.0137

Subject(s) - laminar flow , turbulence , tube (container) , reynolds number , mechanics , cross section (physics) , refraction , inlet , flow (mathematics) , physics , materials science , optics , engineering , mechanical engineering , composite material , quantum mechanics

A streaming double-refraction method was employed to examine the flow in a long glass tube of a very weak solution of benzopurpurin in water. Two kinds of turbulent entry were used: with one, laminar flow at a Reynolds number of about 1900 was observed at cross-sections more than 120 diameters from the entry; with the other the corresponding distance was 90 diameters. The nature of the breakdown of laminar flow at a cross-section was found to depend upon the kind of entry and upon the distance of the cross-section from the inlet. The development of complete turbulence at various cross-sections was also investigated.

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