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

Potential Due to a Magnetized Object01:24

Potential Due to a Magnetized Object

727
Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
727
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

717
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.
717
Uniform Depth Channel Flow01:27

Uniform Depth Channel Flow

481
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
481
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

1.5K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.5K
Bernoulli's Equation for Flow Normal to a Streamline01:16

Bernoulli's Equation for Flow Normal to a Streamline

1.2K
Bernoulli's equation for flow normal to a streamline explains how pressure varies across curved streamlines due to the outward centrifugal forces induced by the fluid's curvature. The pressure is higher on the inner side of the curve, near the center of curvature, and decreases outward to balance these centrifugal forces.
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines. However, the...
1.2K
Turbulent Flow01:24

Turbulent Flow

591
Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent...
591

You might also read

Related Articles

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

Sort by
Same author

Mechanisms involved in ceramide-induced cell cycle arrest in human hepatocarcinoma cells.

World journal of gastroenterology·2007
Same author

A population-based survey of women's traditional postpartum behaviours in Northern China.

Midwifery·2007
Same author

A glimpse of streptococcal toxic shock syndrome from comparative genomics of S. suis 2 Chinese isolates.

PloS one·2007
Same author

Colon carcinoma cells harboring PIK3CA mutations display resistance to growth factor deprivation induced apoptosis.

Molecular cancer therapeutics·2007
Same author

[Surgical treatment of 402 consecutive cases for hilar cholangiocarcinoma: Chinese single center experience].

Zhonghua wai ke za zhi [Chinese journal of surgery]·2007
Same author

Highly convergent route to cyclopeptide alkaloids: total synthesis of ziziphine N.

Organic letters·2007
Same journal

MMFVS-Net: A triple-symmetric cross-attention network for multimodal optical image fusion and high-accuracy virtual staining of breast cancer tissues.

Computer methods and programs in biomedicine·2026
Same journal

A novel Milstein-stochastic epidemiologically-informed neural network for approaching epidemic dynamics: Application to Mpox disease.

Computer methods and programs in biomedicine·2026
Same journal

Accounting for approximation errors using surrogate-based parameter estimation of cardiac mechanics digital twins.

Computer methods and programs in biomedicine·2026
Same journal

Facial iPPG heatmap patterns based on period-aware autoencoder show association with carotid atherosclerosis towards non-contact hemodynamic assessment.

Computer methods and programs in biomedicine·2026
Same journal

Explainable machine learning models predict liver fibrosis risk and outcome in the general population: Development and multi-cohort external validation.

Computer methods and programs in biomedicine·2026
Same journal

Evaluation of surrogate endpoints for survival outcomes using the surrogate package in R.

Computer methods and programs in biomedicine·2026
See all related articles

Related Experiment Video

Updated: Dec 30, 2025

Author Spotlight: Enhancing Lipid Nanoparticle Formation Through Turbulent Mixing in Confined Geometries
08:10

Author Spotlight: Enhancing Lipid Nanoparticle Formation Through Turbulent Mixing in Confined Geometries

Published on: August 23, 2024

5.7K

Entropy optimized MHD nanomaterial flow subject to variable thicked surface.

Jing Wang1, Riaz Muhammad2, M Ijaz Khan3

  • 1School of Information, Beijing Wuzi University, Beijing 101149, P.R. China.

Computer Methods and Programs in Biomedicine
|January 26, 2020
PubMed
Summary
This summary is machine-generated.

This study examines irreversibility in magnetohydrodynamics (MHD) nanofluid flow over a stretching surface, considering factors like Brownian motion and thermophoresis. Results show entropy generation increases with Brinkman and Hartmann numbers, impacting flow and heat transfer.

Keywords:
Bejan numberBrownian movementEntropy generationJoule heatingThermophoresisVariable thicked surfaceViscous dissipationZero mass flux conditions and heat generation/absorption

More Related Videos

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.9K
Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue
06:20

Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue

Published on: February 16, 2024

1.4K

Related Experiment Videos

Last Updated: Dec 30, 2025

Author Spotlight: Enhancing Lipid Nanoparticle Formation Through Turbulent Mixing in Confined Geometries
08:10

Author Spotlight: Enhancing Lipid Nanoparticle Formation Through Turbulent Mixing in Confined Geometries

Published on: August 23, 2024

5.7K
Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

9.9K
Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue
06:20

Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue

Published on: February 16, 2024

1.4K

Area of Science:

  • Fluid dynamics
  • Nanotechnology
  • Magnetohydrodynamics

Background:

  • Understanding irreversibility is crucial for optimizing energy systems.
  • Nanofluids offer enhanced thermal properties for heat transfer applications.
  • Magnetohydrodynamics (MHD) flow is relevant in various industrial processes.

Purpose of the Study:

  • To analyze irreversibility in viscous nanofluid flow under MHD.
  • To investigate the effects of Brownian diffusion, thermophoresis, and viscous dissipation.
  • To explore entropy generation and Bejan number variations with key parameters.

Main Methods:

  • Mathematical modeling of MHD nanofluid flow with heat and mass transfer.
  • Transformation of nonlinear PDEs into ODEs using similarity variables.
  • Numerical computation using the Newton-Raphson shooting method.

Main Results:

  • Velocity increases with the power index (n).
  • Higher Hartmann and Brinkman numbers enhance entropy generation.
  • Temperature and velocity profiles show opposing trends with increasing Hartmann number.
  • Concentration profile is influenced by Brownian diffusion and Lewis number.

Conclusions:

  • Entropy generation is optimized by increasing Brinkman and Hartmann numbers.
  • Bejan number decreases with a higher Hartmann number, indicating reduced irreversibility.
  • The study provides insights into controlling irreversibility in nanofluid flows for engineering applications.