Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Rise of Liquid in a Capillary Tube

Rise of Liquid in a Capillary Tube

When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.

Capillarity in Fluid

Capillarity in Fluid

Capillarity describes the movement of liquid in small spaces without external forces acting on it. The capillarity is driven by surface tension and adhesive interactions between the liquid and surrounding solid surfaces. This effect is often seen in narrow tubes, porous materials, and fine particles.
Surface tension is crucial to capillarity. It results from cohesive forces between liquid molecules at the liquid-air boundary, forming a skin that resists external forces. When the capillary tube...

Typical Model Studies

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

Modeling and Similitude

Modeling and Similitude

Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A multiplex Taqman PCR assay for MRSA detection from whole blood.

PloS one·2023

Same author

Microphysiological Modeling of Gingival Tissues and Host-Material Interactions Using Gingiva-on-Chip.

Advanced healthcare materials·2023

Same author

Current commercial dPCR platforms: technology and market review.

Critical reviews in biotechnology·2022

Same author

Biomolecule-Interactive Flexible Light Emitting Capacitor Display.

Small (Weinheim an der Bergstrasse, Germany)·2021

Same author

Chloroplast genome of <i>Gaura parviflora</i> Douglas and its comparative analysis.

Mitochondrial DNA. Part B, Resources·2021

Same author

Microfluidic chip for stacking, separation and extraction of multiple DNA fragments.

Journal of chromatography. A·2016

Search research articles

Related Experiment Video

Updated: Sep 3, 2025

Glass-Based Devices to Generate Drops and Emulsions

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

Experiment-Simulation Comparison in Liquid Filling Process Driven by Capillarity.

Wei Hua¹, Wei Wang¹, Weidong Zhou¹

¹Singapore Institute of Manufacturing Technology, Agency for Science, Technology and Research (A*STAR), Singapore 138669, Singapore.

|July 27, 2022

Summary

Researchers modified the Bosanquet equation to accurately model capillary-driven liquid filling in tubes. Incorporating air outflow, surface roughness, and a dynamic contact angle improved model-experiment correlation significantly.

Keywords:

Bosanquet equation capillarity filling process model modifications

More Related Videos

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Published on: April 17, 2018

Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope

Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope

Published on: August 15, 2014

Related Experiment Videos

Last Updated: Sep 3, 2025

Glass-Based Devices to Generate Drops and Emulsions

Glass-Based Devices to Generate Drops and Emulsions

Published on: April 5, 2022

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Fabricating High-viscosity Droplets using Microfluidic Capillary Device with Phase-inversion Co-flow Structure

Published on: April 17, 2018

Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope

Single Plane Illumination Module and Micro-capillary Approach for a Wide-field Microscope

Published on: August 15, 2014

Area of Science:

Fluid dynamics
Capillary phenomena
Surface science

Background:

The Bosanquet equation is a foundational model for capillary-driven liquid filling.
Experimental observations of liquid filling in circular tubes show discrepancies with the standard Bosanquet equation.
Understanding these deviations is crucial for accurate process modeling.

Purpose of the Study:

To modify the Bosanquet equation to better align with experimental liquid filling data.
To investigate the impact of key physical factors on capillary filling dynamics.
To enhance the predictive accuracy of capillary filling models.

Main Methods:

Introduction of air outflow dynamics as a factor in liquid inflow.
Inclusion of hydraulic resistance attributed to inner tube surface roughness.
Consideration of the advancing contact angle's variation during the filling process.

Main Results:

The modified Bosanquet equation demonstrated strong agreement with experimental results.
The inclusion of air outflow, surface roughness, and advancing contact angle significantly improved model accuracy.
The coefficient of determination (R-squared) exceeded 0.99, indicating excellent fitting quality.

Conclusions:

The enhanced Bosanquet equation provides a more accurate representation of capillary-driven liquid filling.
The study highlights the importance of considering air-liquid dynamics, surface topography, and contact angle evolution.
The findings offer improved simulation capabilities for capillary filling processes in various applications.