Abstract
We present results from highly resolved three-dimensional spatio-temporal measurements of the conserved scalar field ζ(x, t) in a turbulent shear flow. Each of these experiments consists of 2563 individual point measurements of the local instantaneous conserved scalar value in the flow. The spatial and temporal resolution of these measurements reach beyond the local Kolmogorov scale and resolve the local strain-limited molecular diffusion scale in the flow. This resolution capability, together with the signal quality achieved, allows spatial derivatives involved in determining the instantaneous local molecular mixing rate field ∇ζ·ζ((x, t) to be accurately obtained at each point in the resulting data volume. These results clearly show molecular mixing occurring in thin strained laminar diffusion layers in a turbulent flow.
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References
Biringen, S. (1965): An experimental investigation of a turbulent axisymmetric jet issuing into a coflowing airstream. VKI Tech. Note 110
Burgers, J. M. (1948): A mathematical model illustrating the theory of turbulence, pp. 171–199, In Adv. Applied Mech. (R. von Mises, T. von Kármán, eds), Academic Press, New York
Corcos, G. M., Sherman, F. S. (1984): The mixing layer: deterministic models of a turbulent flow. Part 1. Introduction and the two-dimensional flow. J Fluid Mech. 139, 29–65
Dahm, W. J. A. (1985): Experiments on entrainment, mixing and chemical reactions in turbulent jets at large Schmidt number. Ph.D. thesis, Caltech
Dahm, W. J. A., Dimotakis, P. E. (1986): Measurements of entrainment and mixing in turbulent jets. AIAA J 25, 1216–1223
Dowling, D. R. (1988): Mixing in gas phase turbulent jets. Ph.D. thesis, Caltech
Dowling, D. R., Dimotakis, P. E. (1988): On mixing and structure of the concentration field of turbulent jets. Proc. 1st Nat. Fluid Dyn. Congr., AIAA, Washington
Hanson, R. K. (1986): Combustion diagnostics: planar imaging techniques. Proc. 21st Intl. Symp. on Comb., The Combustion Institute, 1677–1691
Maczynski, J. F. J. (1962): A round jet in an ambient co-axial stream. J. Fluid Mech. 13, 597–608
Reichardt, H. (1975): Turbulente Strahlausbreitung in gleich-gerichteter Grundströmung. Forsch. Ingenieurwesen 30, 133–139
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© 1991 Springer-Verlag Berlin Heidelberg
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Dahm, W.J.A., Buch, K.A. (1991). High Resolution Three-Dimensional (2563) Spatio-Temporal Measurements of the Conserved Scalar Field in Turbulent Shear Flows. In: Durst, F., Launder, B.E., Reynolds, W.C., Schmidt, F.W., Whitelaw, J.H. (eds) Turbulent Shear Flows 7. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76087-7_3
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DOI: https://doi.org/10.1007/978-3-642-76087-7_3
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-76089-1
Online ISBN: 978-3-642-76087-7
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