The visualization of turbulent flows by means of flow birefringence
E. B. Miller · NASA Technical Reports Server (NASA) · 1967
Flow birefringence i s discussed as a technique for the qualitative investigation of separated flows.The results of high speed motion picture studies of unsteady flows through various geometries are discussed.observed phenomena are also presented.Recommendations are made for the design of an optimum flow system.It i s concluded that the technique i s of great value qualitatively and holds promise for development into a quantitative method for studying unsteady flows.An approach i s suggested whereby the birefringent visualization of two dimensional flows could be extended more readily to three dimensional flows.Further study into the relationships between large eddies i n turbulent shear regions and the associated mean flow properties i s recommended.Photographs of many of the ..