Implementation of Fuzzy Logic on FORTRAN Coded Free Convection Around Vertical Tube

Conference paper
First Online:
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 546)

Abstract

In present study, fuzzy logic is used to predict the free convection over a heated vertical cylindrical tube. Tube has diameter 38 mm and length 500 mm. Numerical simulation involves use of implicit finite difference scheme to solve the fluidics equations for vertical tube. Tube is imposed to a fine structural grid and appropriate boundary conditions. Properties of two fluids namely air and water vapour is used for numerical simulation. Grashof number is varied from 2.04 × 106 to 2.62 × 108 and 2.69 × 106 to 3.36 × 108 for air and water vapour respectively. A computer code in FORTRAN programming language is used to draw velocity and temperature profiles. Fuzzy Interface System Mamdani is used to evaluate output membership from different fuzzy sets. Fuzzy predicted results are found in good agreement with experiments. Rayleigh number was found 1.45 × 107 to 3.63 × 108 and 2.66 × 107 to 6.67 × 108 for air and water vapour. Fuzzy logic results confirm ±4% agreement with experimental results.

Keywords

Free convection Vertical cylinder Fuzzy logic Implicit scheme Finite difference method 
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Copyright information

© Springer Nature Singapore Pte Ltd. 2017

Authors and Affiliations

  • Jashanpreet Singh
    • 1
  • Chanpreet Singh
    • 2
  • Satish Kumar
    • 1
  1. 1.Mechanical Engineering DepartmentThapar University PatialaPatialaIndia
  2. 2.Department of Mechanical EngineeringPunjabi University PatialaPatialaIndia

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