Abstract
Isotropic turbulence has unique properties and is impracticable to realize experimentally. Past experiments in this context have been performed by passing a uniform mean flow through a grid, which yields approximately isotropic decaying turbulence. Here an alternative approach of obtaining approximately isotropic stationary turbulence is described, which utilizes two monoplanar grids oscillating in a homogeneous fluid. It was found that the central region between the grids has certain properties similar to that of isotropic turbulence.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Dickey JD; Mellor GL (1980) Decaying turbulence in neutral and stratified fluids. J Fluid Mech 99: 13–31
DeSilva IPD; Fernando HJS (1993) Note on secondary flows in oscillating-grid, mixing-box experiments. Phys Fluids A 5: 1849–1851
DeSilva IPD; Fernando HJS (1994) Oscillating grids as a source of nearly isotropic turbulence. Phys Fluids 6: 2455–2464
Hopfinger EJ; Toly JA (1976) Spatially decaying turbulence and its relation to mixing across density interfaces. J Fluid Mech 78: 155–175
Mohamed MS; LaRue JC ( 1990) The decay power law in grid-generated turbulence. J Fluid Mech 219: 195–214
Author information
Authors and Affiliations
Additional information
The funding for the particle dispersion studies at Arizona State University (ASU) is provided by the Environmental Protection Agency (Office of Exploratory Research). The stratified and rotating flow research at ASU is funded by the Office of Naval Research and the National Science Foundation.
Rights and permissions
About this article
Cite this article
Srdic, A., Fernando, H.J.S. & Montenegro, L. Generation of nearly isotropic turbulence using two oscillating grids. Experiments in Fluids 20, 395–397 (1996). https://doi.org/10.1007/BF00191022
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00191022