TY - JOUR
TI - Numerical investigation of heat transfer from flow over square cylinder placed in a confined channel using Cu-water nanofluid
AU - Athinarayanan Arun Senthil Kumar
AU - Gurunathan Manikandan
AU - Parthasarathy Rajesh Kanna
AU - Taler Jan
AU - Oclon Pawel
AU - Taler Dawid
JN - Thermal Science
PY - 2019
VL - 23
IS - 14
SP - 1367
EP - 1380
PT - Article
AB - Laminar forced convection heat transfer from 2-D flow over a square cylinder  placed in a confined adiabatic channel is studied numerically. The governing  equations are solved using unsteady stream function-vorticity method. The  effect of volume fraction of the nanoparticles are tested for different  Reynolds number in laminar range. Fluid dynamics and heat transfer results  were reported for steady-state condition. Local Nusselt number and average  Nusselt number are reported in connection with volume fraction and Reynolds  number for blockage ratio of 0.25. Square cylinder's front wall results  maximum Nusselt number whereas rear wall shows smaller Nusselt number. Wall  attached pair of vortices appeared rear side of cylinder for Reynolds number  varying from 10 to 40 and volume fraction varies from 0.0 to 0.1. The size  of symmetry vortices linearly increases when Reynolds number or volume  fraction is increased. The drag coefficient is more pronounced to the  variation in Reynolds number and volume fraction rather lift coefficient.