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Related Concept Videos

Coriolis Force01:23

Coriolis Force

An accelerating particle experiences a force equal to the mass multiplied by the acceleration in an inertial frame of reference. Consider a particle in a non-inertial frame of reference, such as a sliding ball on a rotating table. The acceleration of the ball in this rotating reference frame is different than in the intertial frame, which modifies its equation of motion. The fictitious forces acting additionally on a rotating frame of reference alter Newton's Second Law expression. Centripetal...
Central-Force Motion01:17

Central-Force Motion

The central force system operates by exerting a force on an object directed towards a fixed point, typically the origin, with the force magnitude determined by the object's distance from this fixed point. In the context of an object with mass 'm,' polar coordinates are employed to express the equation of motion. Notably, the azimuthal component of force is nonexistent in this system. A comprehensive rewrite and integration of this equation reveal that the product of the squared radial distance...
Equation of Rotational Dynamics01:08

Equation of Rotational Dynamics

Angular variables are introduced in rotational dynamics. Comparing the definitions of angular variables with the definitions of linear kinematic variables, it is seen that there is a mapping of the linear variables to the rotational ones. Linear displacement, velocity, and acceleration have their equivalents in rotational motion, which are angular displacement, angular velocity, and angular acceleration. Similar to the rotational variables, a mapping exists from Newton's second law of motion...
Relation Between Moment of a Force and Angular Momentum01:21

Relation Between Moment of a Force and Angular Momentum

In the realm of spinning tops, the application of force at a distance from the center produces torque, a pivotal factor that alters the angular momentum of the top, thereby inducing its rotation. The concept of moment, akin to linear force in rotation, quantifies how a force acting upon an object initiates rotational motion. Angular momentum serves as the rotational counterpart to linear momentum, representing an object's inherent tendency to persist in its rotational state.
The temporal change...
Rolling Without Slipping01:09

Rolling Without Slipping

People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
Equation of Motion: General Plane motion - Problem Solving01:16

Equation of Motion: General Plane motion - Problem Solving

Consider a lawn roller with a mass of 100 kg, a radius of 0.2 meters, and a radius of gyration of 0.15 meters. A force of 200 N is applied to this roller, angled at 60 degrees from the horizontal plane. What will be the angular acceleration of the lawn roller?
The friction between the roller and the ground is characterized by two coefficients. The static friction coefficient is 0.15, while the kinetic friction coefficient is 0.1. These values are crucial in understanding the interaction between...

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Related Experiment Video

Updated: Jun 25, 2026

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
10:03

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel

Published on: October 5, 2018

Dynamics of Moving Contact Line Influenced by Rotational Forcing.

Giridhar Raveendar1, Sumit Kumar Mehta1,2, Pranab Kumar Mondal1,3

  • 1Microfluidics and Microscale Transport Processes Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.

Langmuir : the ACS Journal of Surfaces and Colloids
|June 23, 2026
PubMed
Summary
This summary is machine-generated.

Rotational microfluidics uses Coriolis forces to break symmetry, altering fluid interfaces unlike pressure-driven systems. Surface wettability and viscosity control these interfacial transitions, crucial for lab-on-chip device design.

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Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

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Last Updated: Jun 25, 2026

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel
10:03

Uncoupling Coriolis Force and Rotating Buoyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel

Published on: October 5, 2018

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

Area of Science:

  • Fluid dynamics
  • Microfluidics
  • Interfacial phenomena

Background:

  • Understanding fluid behavior in microfluidic devices is key for applications like diagnostics.
  • Traditional microfluidic systems often rely on pressure-driven flow, leading to predictable patterns.
  • The influence of rotational forces on immiscible fluid interfaces requires further investigation.

Purpose of the Study:

  • To investigate how surface wettability and viscosity ratio affect capillary filling and interface evolution in rotational microfluidics.
  • To develop a regime map for classifying interfacial transitions based on rotational parameters.
  • To understand the role of Coriolis forces in symmetry breaking and morphological distortion.

Main Methods:

  • A thermodynamically consistent phase-field model was employed to simulate spatiotemporal interface evolution.
  • A regime map was developed using the local Weber number to classify interfacial transitions.
  • Simulations analyzed the effects of rotational force, surface tension, and viscous resistance.

Main Results:

  • Rotational forcing induces Coriolis momentum, causing lateral fluid shifts and skewed morphological distortion.
  • Hydrophilic surfaces show transitions from concave to centrifugal-dominated regimes with increasing rotation; hydrophobic surfaces accelerate this.
  • Higher viscosity ratios delay transitions due to increased viscous resistance; critical rotation is needed for hydrophobic flow initiation.

Conclusions:

  • Coriolis forces in rotational microfluidics offer unique control over interfacial dynamics compared to pressure-driven systems.
  • Surface wettability and viscosity ratio are critical parameters influencing regime transitions and flow behavior.
  • Findings provide a foundation for designing advanced centrifugal lab-on-chip devices for various biochemical applications.