Transient mixed convection in a channel with two facing discretely heated semicircular cavities: Buoyancy, inclination angle, and channel aspect ratio effects

References

• S. K. Ajmera, H. J. Shukla, and A. N. Mathur, “Experimental and numerical investigation of convective heat transfer in a multiple ventilated enclosure with discrete heat sources,” Exp. Heat Transfer, vol. 29, pp. 721–740, 2016. DOI: 10.1080/08916152.2015.1113215.
   Web of Science ®Google Scholar
• S. Venkatachalapathy and M. Udayakumar, “Experimental and numerical investigation of mixed convection heat transfer from protruding heat sources in an enclosure,” Exp. Heat Transfer, vol. 25, pp. 92–110, 2012. DOI: 10.1080/08916152.2011.582566.
   Web of Science ®Google Scholar
• C. Migeon, A. Texier, and G. Pineau, “Effects of lid-driven cavity shape on the flow establishment phase,” J. Fluid Struct., vol. 14, pp. 469–488, 2000. DOI: 10.1006/jfls.1999.0282.
   Web of Science ®Google Scholar
• C.-L. Chen and C.-H. Cheng, “Experimental and numerical study on mixed convection and flow pattern in a lid-driven arc-shape cavity,” Int. Commun. Heat Mass, vol. 39, pp. 1563–1571, 2012a. DOI: 10.1016/j.icheatmasstransfer.2012.10.003.
   Web of Science ®Google Scholar
• J. Liu, G. Xie, and T. W. Simon, “Turbulent flow and heat transfer enhancement in rectangular channels with novel cylindrical grooves,” Int. J. Heat Mass. Tran., vol. 81, pp. 563–577, 2015. DOI: 10.1016/j.ijheatmasstransfer.2014.10.021.
   Web of Science ®Google Scholar
• F. Zhang, X. Wang, and J. Li, “Flow and heat transfer characteristics in rectangular channels using combination of convex-dimples with grooves,” Appl. Therm. Eng., vol. 113, pp. 926–936, 2017. DOI: 10.1016/j.applthermaleng.2016.11.047.
   Web of Science ®Google Scholar
• P. Biswal and T. Basak, “Bejan’s heatlines and numerical visualization of convective heat flow in differentially heated enclosures with concave/convex side walls,” Energy, vol. 64, pp. 69–94, 2014. DOI: 10.1016/j.energy.2013.10.032.
   Web of Science ®Google Scholar
• C.-L. Chen, Y.-C. Chun, and T.-F. Lee, “Experimental and numerical studies on periodic convection flow and heat transfer in lid-driven arc-shape cavity,” Heat Mass Transfer, vol. 41, pp. 58–66, 2004. DOI: 10.1007/s00231-004-0541-5.
   Web of Science ®Google Scholar
• C. Bi, G. H. Tang, and W. Q. Tao, “Heat transfer enhancement in mini-channel heat sinks with dimples and cylindrical grooves,” Int. J. Heat Mass. Tran., vol. 55, pp. 121–132, 2013.
   Google Scholar
• A. A. Ramadhan, Y. T. A. Anii, and A. J. Shareef, “Groove geometry effects on turbulent heat transfer and fluid flow,” Heat Mass Transfer, vol. 49, pp. 185–195, 2013. DOI: 10.1007/s00231-012-1076-9.
   Web of Science ®Google Scholar
• H. S. Dizaji and S. Jafarmadar, “Experiments on new arrangements of convex and concave corrugated tubes through a double-pipe heat exchanger,” Exp. Heat Transfer, vol. 29, pp. 1–16, 2016. DOI: 10.1080/08916152.2015.1046015.
   Web of Science ®Google Scholar
• X.-L. Tian, et al., “Effects of fin pitch and tube diameter on the air-side performance of tube bank fin heat exchanger with the fins punched plane and curved rectangular vortex generators,” Exp. Heat Transfer, vol. 4, pp. 1–20, 2017.
   Google Scholar
• S.-T. Ding and G. Li, “Experimental study of flow through a blade trailing edge with a wavy partition,” Exp. Heat Transfer, vol. 24, pp. 266–284, 2011. DOI: 10.1080/08916152.2010.523811.
   Web of Science ®Google Scholar
• H. S. Chung, G. H. Lee, M. J. Nine, and H. M. Jeong, “Study on the thermal and flow characteristics on the periodically arranged semi-circular ribs in a rectangular channel,” Exp. Heat Transfer, vol. 27, pp. 56–71, 2014. DOI: 10.1080/08916152.2012.719067.
   Web of Science ®Google Scholar
• C. Saidi, F. Legay-Desesquelles, and B. Prunet-Foch, “Laminar flow past a sinusoidal cavity,” Int. J. Heat Mass. Tran., vol. 30, pp. 649–661, 1987. DOI: 10.1016/0017-9310(87)90195-5.
   Web of Science ®Google Scholar
• K. Bilen, M. Cetin, H. Gul, and T. Balta, “The investigation of groove geometry effect on heat transfer for internally grooved tubes,” Appl. Therm. Eng., vol. 29, pp. 753–761, 2009. DOI: 10.1016/j.applthermaleng.2008.04.008.
   Web of Science ®Google Scholar
• M. Komeil, R. Rohollah, and T. Farhad, “Effects of rib shapes on heat transfer characteristics of turbulent flow of Al2O3-water nanofluid inside ribbed tubes,” Iran. J. Chem. Chem. Eng., vol. 34, pp. 61–77, 2015.
   Google Scholar
• M. Sukesan and A. Dhiman, “Laminar mixed convection in a channel with a builtin semi-circular cylinder under the effect of crossbuoyancy,” Int. Commun. Heat Mass, vol. 58, pp. 25–32, 2014. DOI: 10.1016/j.icheatmasstransfer.2014.08.025.
   Web of Science ®Google Scholar
• A. Dhiman, R. Gupta, and L. Baranyi, “Cross-buoyancy mixed convection from a heated cylinder placed asymmetrically in a channel,” Int. Commun. Heat Mass, vol. 95, pp. 139–146, 2018. DOI: 10.1016/j.icheatmasstransfer.2018.05.007.
   Web of Science ®Google Scholar
• A. K. Azad, M. J. H. Munshi, and M. M. Rahman, “Double diffusive mixed convection in a channel with a circular heater,” Procedia Eng., vol. 56, pp. 157–162, 2013. DOI: 10.1016/j.proeng.2013.03.102.
   Google Scholar
• E. H. Ridouane and A. Campo, “Heat transfer and pressure drop charactristics of laminar air flows moving in a parallel-plate channel with transverse hemi-cylindrical cavities,” Int. J. Heat Mass. Tran., vol. 50, pp. 3913–3924, 2007. DOI: 10.1016/j.ijheatmasstransfer.2007.02.004.
   Web of Science ®Google Scholar
• F. Moukalled, A. Doughan, and S. Acharya, “Parametric study of mixed convection in channels with concave and convex surfaces,” Int. J. Heat Mass. Tran., vol. 43, pp. 1947–1963, 2000. DOI: 10.1016/S0017-9310(99)00269-0.
   Web of Science ®Google Scholar
• C.-L. Chen and C.-H. Cheng, “Predictions of buoyancy-induced flow in various acrossshape concave enclosures,” Int. Commun. Heat Mass, vol. 38, pp. 442–448, 2011. DOI: 10.1016/j.icheatmasstransfer.2010.12.027.
   Web of Science ®Google Scholar
• C. Ozalp, A. Pinarbasi, and B. Sahin, “Experimental measurement of flow past cavities of different shapes,” Exp. Therm. Fluid Sci., vol. 34, pp. 505–515, 2010. DOI: 10.1016/j.expthermflusci.2009.11.003.
   Web of Science ®Google Scholar
• C.-L. Chen and C.-H. Cheng, “Buoyancy-induced flow and convective heat transfer in an inclined arc-shape enclosure,” Int. J. Heat Fluid Flow, vol. 23, pp. 823–830, 2002. DOI: 10.1016/S0142-727X(02)00189-3.
   Web of Science ®Google Scholar
• C.-L. Chen and C.-H. Cheng, “Numerical predictions of natural convection with liquid fluids contained in an inclined arc-shaped enclosure,” Int. Commun. Heat Mass, vol. 39, pp. 209–215, 2012b. DOI: 10.1016/j.icheatmasstransfer.2011.11.001.
   Web of Science ®Google Scholar
• H. Chung, et al., “Augmented heat transfer with intersecting rib in rectangular channels having different aspect ratios,” Int. J. Heat Mass. Tran., vol. 88, pp. 357–367, 2015. DOI: 10.1016/j.ijheatmasstransfer.2015.04.033.
   Web of Science ®Google Scholar
• M. Pizzarelli, F. Nasuti, and M. Onofri, “Trade-off analysis of high-aspect-ratio-cooling-channels for rocket engines,” Int. J. Heat Fluid Flow, vol. 44, pp. 458–467, 2013. DOI: 10.1016/j.ijheatfluidflow.2013.08.003.
   Web of Science ®Google Scholar
• G. I. Mahmood and P. M. Ligrani, “Heat transfer in a dimpled channel: combined influences of aspect ratio, temperature ratio, Reynolds number and flow structure,” Int. J. Heat Mass. Tran., vol. 45, pp. 2011–2020, 2002. DOI: 10.1016/S0017-9310(01)00314-3.
   Web of Science ®Google Scholar
• C. Tanda, “Experiments on natural convection in water-cooled ribbed channels with different aspect ratios,” Int. J. Heat Mass. Tran., vol. 110, pp. 606–612, 2017. DOI: 10.1016/j.ijheatmasstransfer.2017.03.050.
   Web of Science ®Google Scholar
• A. Candan, B. Markal, O. Aydin, and M. Avci, “Saturated flow boiling characteristics in single rectangular minichannels: effect of aspect ratio,” Exp. Heat Transfer, vol. 31, pp. 531–551, 2018. DOI: 10.1080/08916152.2018.1463305.
   Web of Science ®Google Scholar
• A. Barletta and E. Zanchini, “On the choice of the reference temperature for fully-developed mixed convection in a vertical channel,” Int. J. Heat Mass Transf., vol. 42, pp. 3169–3181, 1999. DOI: 10.1016/S0017-9310(99)00011-3.
   Web of Science ®Google Scholar
• E. Kchoc, M. Davics, and D. Newport, “Mixed convection cooling of horizontally mounted printed circuit board,” IEEE Trans. Compon. Packag. Technol., vol. 26, pp. 126–133, 2003. DOI: 10.1109/TCAPT.2003.811471.
   Google Scholar
• C. Rao, C. Balaji, and S. Venkateshan, “Effect of surface radiation on conjugate mixed convection in a vertical channel with a discrete heat source in each wall,” Int. J. Heat Mass Transfer, vol. 45, pp. 3331–3347, 2002. DOI: 10.1016/S0017-9310(02)00061-3.
   Web of Science ®Google Scholar
• S. Kline and F. McClintock, “Describing uncertainty in single sample experiments,” Mech. Eng., vol. 75, pp. 3–12, 1953.
   Google Scholar