Experimental and numerical investigation of convection heat transfer in a rectangular channel with angled ribs

The effect of different inlet conditions of air in a rectangular channel on convection heat transfer: Turbulence flow

“…Methods of the PHE have been extensively explored with the attempts to overcome the thermal problems subject to high heat flux [4]. A variety of surface ribs [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21], perforated baffle [22][23][24][25][26][27], pin-fins [28][29][30][31][32], Snail, propeller, twisted and winglet-type vortex generators [33,34,30,[35][36][37][38][39][40][41][42][43][44][45][46] have been devised to enhance heat transfer rates in ducts. However, it is shown in the literature review that detail exploration of turned flow in the channel needs more extensive study.…”

Heat transfer enhancement in a tube using circular cross sectional rings separated from wall

“…For e/d < 0.057, the f is proportional to e/d; for e/d P 057, the f is proportional to (e/d) 2.55 . Forced convection heat transfer of air in a rectangular channel with different angled ribs on one wall was investigated experimentally and numerically by Lu and Jiang [17]. The numerical results indicated that the heat transfer coefficients were largest with the 60°ribs, but the channel with the 20°ribs had the best overall thermal/hydraulic performance considering the heat transfer and the pressure drop when the spacing between ribs was 4 mm.…”

“…Due to the existence of ribs effective heat transfer surface increases. Many researches have been carried out on heat transfer enhancement achieved by different ribs [13][14][15][16][17][18]. San and Huang [16] performed an experimental investigation on heat transfer enhancement of transverse ribs in circular tubes.…”

Simulation of forced convection in a channel with extended surfaces by the lattice Boltzmann method

“…The effect of the Re variation (Re < 1000) is relatively similar in all cases due to the same drag forms. Lu and Jiang [10] investigated the forced convection heat transfer in a rectangular channel with ribs of different rotated angles. The best heat transfer coefficient was found with 60 • rotation; however, 20 • rotation gave the best thermal performance.…”