Experimental analysis of Rayleigh‐Bénard convection in the weakly elastic regime: insights from water‐based liquid bridges

Ahmed Aljanadi; Monica Oliveira; Marcello Lappa

Experimental analysis of Rayleigh‐Bénard convection in the weakly elastic regime: insights from water‐based liquid bridges

Ahmed Aljanadi, Monica Oliveira, Marcello Lappa

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Abstract

This study investigates experimentally the weakly elastic regime (WER) of Rayleigh‐Bénard convection, a domain that remains significantly underexplored in comparison to its extensively studied Newtonian counterpart. Of particular interest is the nature of the primary flow bifurcation from the purely diffusive, motionless state. In the WER, the first bifurcation is known to be stationary, a feature that stands in contrast to certain regimes observed in strongly elastic fluids.

Original language	English
Number of pages	1
Publication status	Published - 28 May 2025
Event	38th Scottish Fluid Mechanics Meeting - Glasgow, United Kingdom Duration: 28 May 2025 → 28 May 2025

Conference

Conference	38th Scottish Fluid Mechanics Meeting
Abbreviated title	38th SFMM
Country/Territory	United Kingdom
City	Glasgow
Period	28/05/25 → 28/05/25

Keywords

weakly elastic regime
liquid bridge
thermoplastics

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Aljanadi-etal-SFMM-2025-Experimental-analysis-of-Rayleigh‐Bénard-convection-in-the-weaklyFinal published version, 837 KBLicence: Strath_1

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title = "Experimental analysis of Rayleigh‐B{\'e}nard convection in the weakly elastic regime: insights from water‐based liquid bridges",

abstract = "This study investigates experimentally the weakly elastic regime (WER) of Rayleigh‐B{\'e}nard convection, a domain that remains significantly underexplored in comparison to its extensively studied Newtonian counterpart. Of particular interest is the nature of the primary flow bifurcation from the purely diffusive, motionless state. In the WER, the first bifurcation is known to be stationary, a feature that stands in contrast to certain regimes observed in strongly elastic fluids.",

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T2 - 38th Scottish Fluid Mechanics Meeting

AU - Aljanadi, Ahmed

AU - Oliveira, Monica

AU - Lappa, Marcello

PY - 2025/5/28

Y1 - 2025/5/28

N2 - This study investigates experimentally the weakly elastic regime (WER) of Rayleigh‐Bénard convection, a domain that remains significantly underexplored in comparison to its extensively studied Newtonian counterpart. Of particular interest is the nature of the primary flow bifurcation from the purely diffusive, motionless state. In the WER, the first bifurcation is known to be stationary, a feature that stands in contrast to certain regimes observed in strongly elastic fluids.

AB - This study investigates experimentally the weakly elastic regime (WER) of Rayleigh‐Bénard convection, a domain that remains significantly underexplored in comparison to its extensively studied Newtonian counterpart. Of particular interest is the nature of the primary flow bifurcation from the purely diffusive, motionless state. In the WER, the first bifurcation is known to be stationary, a feature that stands in contrast to certain regimes observed in strongly elastic fluids.

KW - weakly elastic regime

KW - liquid bridge

KW - thermoplastics

M3 - Poster

Y2 - 28 May 2025 through 28 May 2025

ER -

Experimental analysis of Rayleigh‐Bénard convection in the weakly elastic regime: insights from water‐based liquid bridges

Abstract

Conference

Keywords

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