This experimental study reveals a striking nonlinear-physics phenomenon of fundamental and practical interest—changing conditions at the interface of two swirling immiscible fluids filling a vertical cylindrical container. To this end, we use a new measurement technique significantly advanced compared with prior studies. The rotating bottom disk drives a steady axisymmetric flow of both fluids. The lower fluid makes the centrifugal circulation (CC): It spirals on toroid surfaces going to the periphery near the bottom and going back to the axis near the interface. At a slow rotation (Re = 100), the upper fluid makes the anti-centrifugal circulation. As the rotation intensifies (Re = 175), the upper-fluid flow reverses into CC near the interface-axis intersection. For strong swirl (Re = 500), the CC occurs at the entire interface. In prior studies, the spatial resolution (1 mm) was insufficient to resolve the near-interface velocity field. Here, we use the advanced (light field) measurement technique, which has significantly better resolution (0.14 mm) and clearly shows that the radial velocity at the interface is negative for small Re and becomes zero for large Re. During these metamorphoses, the topology of the lower-fluid flow remains invariant, the interface has no visible deformation, and the flow is steady and axisymmetric.
Skip Nav Destination
,
,
,
Article navigation
March 2023
Letter|
March 16 2023
Changing interface conditions in a two-fluid rotating flow Available to Purchase
Igor V. Naumov
;
Igor V. Naumov
(Conceptualization, Formal analysis, Methodology, Writing – original draft)
1
Kutateladze Institute of Thermophysics
SB RAS 630090, Novosibirsk, Russia
Search for other works by this author on:
Sergey G. Skripkin
;
Sergey G. Skripkin
a)
(Conceptualization, Investigation, Methodology, Writing – original draft)
1
Kutateladze Institute of Thermophysics
SB RAS 630090, Novosibirsk, Russia
a)Author to whom correspondence should be addressed: [email protected]
Search for other works by this author on:
Alexandr Z. Kvon
;
Alexandr Z. Kvon
(Investigation, Methodology, Writing – original draft)
1
Kutateladze Institute of Thermophysics
SB RAS 630090, Novosibirsk, Russia
Search for other works by this author on:
Vladimir N. Shtern
Vladimir N. Shtern
(Conceptualization, Formal analysis, Writing – original draft)
1
Kutateladze Institute of Thermophysics
SB RAS 630090, Novosibirsk, Russia
2
Shtern Research and Consulting
, Houston, Texas 77096, USA
Search for other works by this author on:
Igor V. Naumov
1
Sergey G. Skripkin
1,a)
Alexandr Z. Kvon
1
Vladimir N. Shtern
1,2
1
Kutateladze Institute of Thermophysics
SB RAS 630090, Novosibirsk, Russia
2
Shtern Research and Consulting
, Houston, Texas 77096, USA
a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 35, 031705 (2023)
Article history
Received:
January 09 2023
Accepted:
February 26 2023
Citation
Igor V. Naumov, Sergey G. Skripkin, Alexandr Z. Kvon, Vladimir N. Shtern; Changing interface conditions in a two-fluid rotating flow. Physics of Fluids 1 March 2023; 35 (3): 031705. https://doi.org/10.1063/5.0141821
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
Phase behavior of Cacio e Pepe sauce
G. Bartolucci, D. M. Busiello, et al.
Chinese Academy of Science Journal Ranking System (2015–2023)
Cruz Y. Li (李雨桐), 李雨桐, et al.
Direct numerical simulations of immiscible two-phase flow in rough fractures: Impact of wetting film resolution
R. Krishna, Y. Méheust, et al.
Related Content
Counterflow slip in a two-fluid whirlpool
Physics of Fluids (June 2021)
Topological transformations of meridional motion in a three-liquid vortex
Physics of Fluids (June 2024)
Bifurcation of rotating surface switching at different spin-up accelerations
Physics of Fluids (October 2024)
Hysteresis and bifurcations at spin up and spin down of a two-liquid vortex
Physics of Fluids (May 2025)
Vortex breakdown in the lower fluid of two-fluid swirling flow
Physics of Fluids (January 2020)