Research Article Open Access

Numerical Investigation on Turbulent Forced Convection in Heating Channel Inserted with Discrete V-Shaped Baffles

Amnart Boonloi1 and Withada Jedsadaratanachai2
  • 1 King Mongkut’s University of Technology North Bangkok, Thailand
  • 2 King Mongkut’s Institute of Technology Ladkrabang, Thailand

Abstract

The numerical examinations on flow visualization, heat transfer characteristic and performance improvement in a square duct inserted with discrete V-shaped baffles (DVB) are reported. The DVB is designed to reduce the pressure loss when compared with the V-shaped baffle. The influences of the flow blockage ratios (b/H, BR = 0.05-0.20), V-tip directions (V-Downstream and V-Upstream) are investigated for Reynolds number, Re = 3000-20,000, with a single pitch ratio and flow attack angle of 1 and 30°, respectively. As the results, the DVB can generate the vortex flow and impinging flow through the test section that assists to develop the thermal efficiency. The augmentations on the heat transfer coefficient and pressure drop are around 2.5-5.75 and 4-22.5 times above the smooth duct, respectively. The best thermal efficiency in forms of thermal enhancement factor, TEF, around 2.32 is detected at Re = 3000, BR = 0.10 and V-Upstream.

Journal of Mathematics and Statistics
Volume 12 No. 1, 2016, 43-58

DOI: https://doi.org/10.3844/jmssp.2016.43.58

Submitted On: 2 November 2015 Published On: 15 April 2016

How to Cite: Boonloi, A. & Jedsadaratanachai, W. (2016). Numerical Investigation on Turbulent Forced Convection in Heating Channel Inserted with Discrete V-Shaped Baffles. Journal of Mathematics and Statistics, 12(1), 43-58. https://doi.org/10.3844/jmssp.2016.43.58

  • 2,889 Views
  • 1,553 Downloads
  • 0 Citations

Download

Keywords

  • Baffle
  • Flow Visualization
  • Heat Transfer
  • Numerical Study
  • Thermal Performance