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Updated: Aug 6, 2026
10:03
Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
Published on: October 5, 2018
Convection in two-layer systems with an anomalous thermocapillary effect
Braverman1, Eckert, Nepomnyashchy
1Department of Computer Science, Carmiel ORT College, Carmiel, Israel.
Summary
This study investigates buoyancy and thermocapillary instability in liquid systems with anomalous thermocapillary effects. A novel oscillatory instability was discovered and analyzed in both linear and nonlinear models.
Area of Science:
- Fluid Dynamics
- Thermodynamics
- Interfacial Phenomena
Background:
- Anomalous thermocapillary effect (interfacial tension increases with temperature) is common in liquid-liquid systems.
- Understanding combined buoyancy and thermocapillary effects is crucial for predicting fluid behavior.
Purpose of the Study:
- To analyze the combined action of buoyancy and thermocapillary instability mechanisms.
- To investigate systems exhibiting an anomalous thermocapillary effect.
- To explore both linear and nonlinear formulations of the problem.
Main Methods:
- Theoretical analysis using linear and nonlinear formulations.
- Investigation of fluid dynamics at interfaces.
- Modeling of thermocapillary and buoyancy-driven instabilities.
Main Results:
- Identified and characterized a unique type of oscillatory instability.
- Demonstrated the interplay between buoyancy and anomalous thermocapillary effects.
- Provided insights into the stability of liquid-liquid interfaces under thermal gradients.
Conclusions:
- The combined action of buoyancy and anomalous thermocapillary effects can lead to complex instability phenomena.
- A novel oscillatory instability mechanism has been revealed, contributing to the understanding of interfacial fluid dynamics.
- This research advances the knowledge of thermocapillary-driven instabilities in multiphase systems.
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