Numerical Simulations of the Flow Around a Circular Cylinder Covered by a Porous Medium

Abstract

In order to develop more comfortable and safe protective garments it is necessary to obtain detailed knowledge of the phenomena governing air flow heat and mass transfer. Computational Fluid Dynamics (CFD) is a promising approach for those kinds of problems. Numerical simulations can support the design process and make it cheaper. Simulations of the air flow in a 2D model of a cylindrical human body part covered by protective clothing are presented here. The CFD predictions show dependencies of the air flow penetrating the clothing material, and the heat and mass transfer to the body part, as a function of external flow and clothing material properties. The problem has been formulated by using dimensionless parameters, reducing the number of properties for flow and clothing conditions. The clothing material has been modeled as a porous material. For turbulence modeling, we used an RNG k-epsilon model. The set of governing differential equations has been solved numerically by use of the commercial flow-simulation code Fluent 5.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2002
Accession Number
ADP012414

Entities

People

  • Chris R. Kleijn
  • Harry E. A. Van Den Akker
  • Michal P. Sobera
  • Paul Brasser

Organizations

  • Prins Maurits Laboratorium TNO

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Air Flow
  • Air Gaps
  • Boltzmann Equation
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • Free Stream
  • Heat Transfer
  • Mass Transfer
  • Materials
  • Mechanical Properties
  • Protective Clothing
  • Reynolds Number
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Thermal Physics or Thermal Science.