Fluid Mechanics & Aerodynamics

Fluid Mechanics & Aerodynamics

Three-Dimensional Analysis of Forced Convection Fluid Flow in a Duct with Step Considering the Interacting Influences of the Magnetic Field and Solid Nanoparticles

Document Type : Original Article

Authors
Meysam Atashafrooz 1
Kazem Barchi Pour 2
Nasrin Aminizadeh 2
1 Mechanical Engineering Department Sirjan University of Technology
2 Mechanical Engineering Department, Sirjan University of Technology, Sirjan, Iran
Abstract
In this research, interaction influences of magnetic field and solid nanoparticles on three-dimensional forced convection flow in a horizontal duct with an inclined backward-facing step are studied. The  nanofluid is considered as the working fluid in duct. The Blocked region method is applied to simulate the inclined backward-facing step in Cartesian coordinates. To obtain the velocity and temperature fields, the Navier-Stokes and energy equations are solved using the Finite volume method and SIMPLE algorithm. Influences of Hartmann number  and concentrations of  nanoparticles  on the velocity and temperature fields in duct and distributions of fiction coefficient and Nusselt number along the bottom wall of duct are analyzed with full details. Results of this research clearly show that the hydrodynamics and thermal behaviors of flow are considerably dependent on the magnetic field strength and volume fractions of  nanoparticles. In fact, the highest values of fiction coefficients and heat transfer rates on the bottom wall are related to the case of  and .
Keywords
Three-dimensional Convection flow
Magnetic Field
Nanofluid
Flow Separation
Inclined Backward-facing Step
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Fluid Mechanics & Aerodynamics
Volume 9, Issue 1 - Serial Number 25
Spring and Summer
January 2021
Pages 117-133

  • Receive Date 18 October 2020
  • Revise Date 05 December 2020
  • Accept Date 23 January 2021
  • Publish Date 21 June 2020