Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Laminar Flow01:27

Laminar Flow

1.2K
Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
1.2K
Couette Flow01:22

Couette Flow

371
Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
371
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

271
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
271
Irrotational Flow01:28

Irrotational Flow

518
Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
518
Lift01:23

Lift

211
Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
211
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

574
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
574

You might also read

Related Articles

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

Sort by
Same author

A Coupled Refined Model of Atomistic and Continuum Parameters of Diatomic Covalent Bonds.

Nanomaterials (Basel, Switzerland)·2026
Same author

Experimental Characterization of the Mechanical Properties of Filter Media in Solid-Liquid Filtration Processes.

Materials (Basel, Switzerland)·2024
Same author

Welding techniques and manganese concentrations in blood and brain: Results from the WELDFUMES study.

Neurotoxicology·2024
Same author

Characterization of Particle Shape with an Improved 3D Light Scattering Sensor (3D-LSS) for Aerosols.

Sensors (Basel, Switzerland)·2024
Same author

Membrane-Fabric Composite Filter Media for Continuous Cake Filtration without Gas Throughput Using Paste Dot Coating with Adhesive.

Membranes·2023
Same author

Monitoring of Particulate Fouling Potential of Feed Water with Spectroscopic Measurements.

Membranes·2023

Related Experiment Video

Updated: Aug 12, 2025

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
09:58

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

8.5K

Secondary Lip Flow in a Cyclone Separator.

Dzmitry Misiulia1, Göran Lidén2, Sergiy Antonyuk1

  • 1Institute of Particle Process Engineering, University of Kaiserslautern-Landau, Gottlieb-Daimler-Straße 44, 67663 Kaiserslautern, Rhineland-Palatinate Germany.

Flow, Turbulence and Combustion
|January 30, 2023
PubMed
Summary

Secondary flows in cyclones, including lid, vortex finder, and lip flows, were studied using LES simulations. Their magnitudes decrease with increasing Reynolds number, with significant differences between flow types.

Keywords:
CycloneLarge eddy simulationLip flowSecondary flow

More Related Videos

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
11:00

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

11.7K
Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

17.3K

Related Experiment Videos

Last Updated: Aug 12, 2025

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
09:58

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

8.5K
Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
11:00

Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

Published on: July 19, 2016

11.7K
Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
12:26

Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics

Published on: August 27, 2013

17.3K

Area of Science:

  • Fluid dynamics
  • Computational fluid dynamics

Background:

  • Secondary flows significantly impact cyclone performance.
  • Understanding these flows is crucial for optimizing cyclone design and efficiency.
  • Previous models often oversimplified the relationship between different secondary flow types.

Purpose of the Study:

  • To investigate three key secondary flows in a cyclone: inward radial flow along the cyclone lid, downward axial flow along the vortex finder, and lip flow.
  • To quantify the effect of Reynolds number on these secondary flows.
  • To compare the magnitudes of the lid flow and lip flow and their relationship.

Main Methods:

  • Large Eddy Simulation (LES) was employed to model the fluid flow.
  • Simulations covered a wide flow rate range (0.22-7.54 LPM).
  • Mathematical equations were derived to describe the influence of Reynolds number.

Main Results:

  • All studied secondary flows decrease as the Reynolds number increases.
  • The downward axial flow along the vortex finder is significantly larger than the lid flow.
  • Lip flow is substantially larger than the lid flow, contrary to some cyclone models.

Conclusions:

  • The Reynolds number has a significant, quantifiable effect on secondary flows.
  • The distinct magnitudes of lid flow and lip flow necessitate revised cyclone modeling.
  • The ratio of lip flow to lid flow is largely independent of the Reynolds number.