Universal expression for the drag on a fluid sphere.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29659596.
- Also identified by DOI 10.1371/journal.pone.0194907 and PMC identifier 5901779.
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Abstract
An expression was developed for prediction of drag coefficients for any spherical particle, drop or bubble in an infinite, homogeneous liquid. The formula reproduces the limiting cases for gas bubbles and solid spheres, as well as the exact Hadamard-Rybczynski solution. The accuracy of the expression, which is valid for Reynolds numbers up to a few hundred, was confirmed by comparison with published numerical predictions of the drag coefficient for a range of physical circumstances.
Medical subject headings
- Gravitation
- Hydrodynamics
- Microbubbles
- Microspheres
- Models, Theoretical