Zobrazeno 1 - 10
of 35
pro vyhledávání: '"L E, Johns"'
Publikováno v:
Physical Review E. 101
Assuming that we wish to measure the surface tension between two liquids by running a pendent drop experiment, we present calculations supporting the case for spinning the drop. For bridges, jets, etc., spinning a heavy fluid surrounded by a lighter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72c07259b788f89c966ed67c8b6887ae
https://doi.org/10.1103/physreve.101.043116
https://doi.org/10.1103/physreve.101.043116
Publikováno v:
Physical Review Fluids. 4
We show that the shape and stability of any static liquid bridge can be solved from a master problem obtained from a model of a pressure-controlled experiment.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::547fedab5883ac4d638e36bb695efb67
https://doi.org/10.1103/physrevfluids.4.123904
https://doi.org/10.1103/physrevfluids.4.123904
Autor:
L. E. Johns
Publikováno v:
International Journal of Engineering Science. 109:106-114
Simple flows can be used to measure viscosities. If the viscosity is high enough and depends on temperature, frictional heating presents a technical difficulty. Yet in many viscometric flows formulas predicting the temperature and the velocity distri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8c998b85a90ed5af39ffb928665a07
https://doi.org/10.1016/j.ijengsci.2016.08.007
https://doi.org/10.1016/j.ijengsci.2016.08.007
Autor:
L. E. Johns, Ranga Narayanan
Publikováno v:
Journal of Colloid and Interface Science. 449:327-331
We investigate the possibility of stabilizing a Rayleigh–Taylor experiment by imposing a small upward temperature gradient. We find that if the two fluids have equal thermal conductivities nothing can be accomplished. If either thermal conductivity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c352b6873e166d669f2a0091de30e8f3
https://doi.org/10.1016/j.jcis.2014.11.055
https://doi.org/10.1016/j.jcis.2014.11.055
Publikováno v:
Physical Review Fluids. 2
We show that the critical point of a static pendent drop pinned at a curve under volume or pressure control is bounded independent of the curve symmetry. If the curve is symmetric and the base drop shape known, the critical points for symmetric or as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3c464380d3665e1e806a25460618979
https://doi.org/10.1103/physrevfluids.2.113605
https://doi.org/10.1103/physrevfluids.2.113605
Publikováno v:
International Journal of Engineering Science. 75:85-89
We present a long wavelength model in order to derive a simple formula for the amplitude at the onset of circulation cells in flow past a wavy wall. The flow takes place between a wavy wall and a plane wall and is driven by moving the plane wall. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f34f9b9be203507fe7d5c07b350e9690
https://doi.org/10.1016/j.ijengsci.2013.11.007
https://doi.org/10.1016/j.ijengsci.2013.11.007
Autor:
L. E. Johns, Ranga Narayanan
Publikováno v:
European Journal of Mechanics - B/Fluids. 32:91-100
Miscible displacement in a bounded fluid layer introduces instabilities due to viscosity variation in the layer and due to viscosity difference across the surfaces separating the layer from surrounding fluid. We find that the problem in the layer its
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07003b2a82c149febaebb40f1d7dc1e2
https://doi.org/10.1016/j.euromechflu.2011.09.005
https://doi.org/10.1016/j.euromechflu.2011.09.005
Publikováno v:
Industrial & Engineering Chemistry Research. 50:13250-13257
We can stabilize the Rayleigh–Taylor instability to perturbations of any wavelength by heating from above. The same is true for the Saffman–Taylor instability. We present formulas for estimating th...
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https://doi.org/10.1021/ie200473p
https://doi.org/10.1021/ie200473p
Publikováno v:
Industrial & Engineering Chemistry Research. 50:13244-13249
A region heated by a temperature-dependent source is said to be stable if the heat conducted to the surroundings can balance the heat generated in the region. The critical value of the Frank-Kamenetskii number gives the limit of stability, the point
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff2897bed47016dbdf0f095128ca4d73
https://doi.org/10.1021/ie200458r
https://doi.org/10.1021/ie200458r
Publikováno v:
Journal of Medical Screening. 17:37-43
Background The Age trial was a randomized controlled trial to study the effect on breast cancer mortality of invitation to annual mammography from age 40 to 41. Uptake of invitation to screening mammography in UK women aged below 50 is of interest, p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fda88a158ed1f0b9900e961e16be79b3
https://doi.org/10.1258/jms.2010.009091
https://doi.org/10.1258/jms.2010.009091