Research Article
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Numerical Analysis of Flow and Heat Transfer for Semi Spheres Placed As Multiple Serials In a Channel

Year 2018, , 76 - 82, 20.09.2018
https://doi.org/10.26701/ems.377446

Abstract





Excessive heating
of electronic equipments may cause both decreasing thermal performance of
system and undesirable consequences such as increased thermal stresses and
mechanical defects in the system. In the literature, there are many studies
including applications of thermal analysis and technologies in order to make
cooling more effective. In this study, flow and heat transfer are
investigated numerically in the case of three dimensional, incompressible,
fully developed and laminar flow for semi spheres placed as multiple serials
in a channel. The continuity, Navier-Stokes and energy equations are solved
numerically by using  Ansys Fluent-17.0
software program. Air is taken as working fluid. Inlet temperature of the air
and sphere surface temperatures are 300 K and 350 K, respectively. The
effects of location of semi spheres as multiple serials, placement angle and
positions of sphres according to each other on the pressure drop and heat
transfer enhancement for case of different Re numbers (Re=100, 200, 400 ve
800) are researched. The obtained results show that the positions of spheres
have a great importance in the case of placement as multiple serials of semi
spheres.


References

  • Sparrow, E.M., Prata, A.T., (1983). Numerical solutions for laminar flow and heat transfer in a periodically converging-diverging tube, with experimental confirmation. Numerical Heat Transfer 6(4): 441–61, Doi: 10.1080/01495728308963099.
  • Patankar, S.V., Liu, C.H., Sparrow, E.M. (1977). The periodic thermally developed in ducts with streamwise periodic wall temperature or heat flux. International Journal of Heat and Mass Transfer. 21(5): 557-566.
  • Kelkar, K.M. and Patankar, S.V. (1987). Numerical prediction of flow and heat transfer in a parallel plate channel with staggered fins. Journal of Heat Transfer, 109(1): 25-30.
  • Wang, G., Vanka, S.P., (1995). Convective heat transfer in periodic wavy passages. International Journal of Heat and Mass Transfer 38(17): 3219–30, Doi: 10.1016/0017-9310(95)00051-A.
  • Min, C., Qi, C., Kong, X., Dong, J., (2010). Experimental study of rectangular channel with modified rectangular longitudinal vortex generators. International Journal of Heat and Mass Transfer 53(15–16): 3023–9, Doi: 10.1016/j.ijheatmasstransfer.2010.03.026.
  • Pankaj, S., Gautm, B., Subrata, S. (2014). Comparision of winglet-type vortex generators periodically deployed in a plate-fin heat exchanger-a synergy based analysis. International Journal of Heat and Mass Transfer, 74: 292-305.
  • Zhu, J.X., Fiebig, M., Mitra, N.K., (1995). Numerical investigation of turbulent flows and heat transfer in a rib-roughened channel with longitudinal vortex generators. International Journal of Heat and Mass Transfer 38(3): 495–501, Doi: 10.1016/0017-9310(94)00177-W.
  • Chunhua, M., Chengying, Q., Enyu, W., Liting, T., Yaju, Q. (2012). Numerical ınvestigation of turbulent flow and heat transfer in a channel with novel longitudinal vortex generators. International Journal of Heat and Mass Transfer, 55(23-24): 7268-7277.
  • Sohankar, A. (2007). Heat transfer augmentation in a rectangular channel with vee-shaped vortex generator. International Journal of Heat and Fluid Flow. vol. 28, no. 2, p. 306-317.
  • Patankar, S.V. and Prakash, C. (1981). Analysis of the effect of plate thickness on laminar flow and heat transfer in ınterrupted plate passages. International Journal of Heat and Mass Transfer, 24(11): 1801-1810.
  • Yılmaz, T. (1982). Numerical solutions of navier-stokes equations for laminar flow in rows of plates in staggered arrangement. International Journal of Heat and Fluid Flow, 3(4): 201-206.
  • Yılmaz, T. and Ayhan, T. (1983). Birbirleriyle bağlantılı daralan ve genişleyen kanallarda ısı transferi. 4. Ulusal Isı Bilimi ve Tekniği Kongresi, 133-149.
  • Fuji, M., Sensimo, Y., Yamanaka, G. (1988). Heat transfer and pressure drop of perforated surface heat excganger with pasage enlargement and contraction. International Journal of Heat and Mass Transfer. 31(1): 135-142.
  • Kotcioğlu, I., Bölükbaşı, A. (2003). Düşey dikdörtgen kesitli bir kanalda farklı kanatçıklı yüzeylerde ısı transferinin incelenmesi. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi. 5(2): 89-102.
  • Erdinc, M.T. (2014). Birbirleriyle bağlantılı daralan ve genişleyen kanallarda akış ve ısı geçişinin sayısal olarak incelenmesi. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü. Yüksek Lisans Tezi. p. 100.
Year 2018, , 76 - 82, 20.09.2018
https://doi.org/10.26701/ems.377446

Abstract

References

  • Sparrow, E.M., Prata, A.T., (1983). Numerical solutions for laminar flow and heat transfer in a periodically converging-diverging tube, with experimental confirmation. Numerical Heat Transfer 6(4): 441–61, Doi: 10.1080/01495728308963099.
  • Patankar, S.V., Liu, C.H., Sparrow, E.M. (1977). The periodic thermally developed in ducts with streamwise periodic wall temperature or heat flux. International Journal of Heat and Mass Transfer. 21(5): 557-566.
  • Kelkar, K.M. and Patankar, S.V. (1987). Numerical prediction of flow and heat transfer in a parallel plate channel with staggered fins. Journal of Heat Transfer, 109(1): 25-30.
  • Wang, G., Vanka, S.P., (1995). Convective heat transfer in periodic wavy passages. International Journal of Heat and Mass Transfer 38(17): 3219–30, Doi: 10.1016/0017-9310(95)00051-A.
  • Min, C., Qi, C., Kong, X., Dong, J., (2010). Experimental study of rectangular channel with modified rectangular longitudinal vortex generators. International Journal of Heat and Mass Transfer 53(15–16): 3023–9, Doi: 10.1016/j.ijheatmasstransfer.2010.03.026.
  • Pankaj, S., Gautm, B., Subrata, S. (2014). Comparision of winglet-type vortex generators periodically deployed in a plate-fin heat exchanger-a synergy based analysis. International Journal of Heat and Mass Transfer, 74: 292-305.
  • Zhu, J.X., Fiebig, M., Mitra, N.K., (1995). Numerical investigation of turbulent flows and heat transfer in a rib-roughened channel with longitudinal vortex generators. International Journal of Heat and Mass Transfer 38(3): 495–501, Doi: 10.1016/0017-9310(94)00177-W.
  • Chunhua, M., Chengying, Q., Enyu, W., Liting, T., Yaju, Q. (2012). Numerical ınvestigation of turbulent flow and heat transfer in a channel with novel longitudinal vortex generators. International Journal of Heat and Mass Transfer, 55(23-24): 7268-7277.
  • Sohankar, A. (2007). Heat transfer augmentation in a rectangular channel with vee-shaped vortex generator. International Journal of Heat and Fluid Flow. vol. 28, no. 2, p. 306-317.
  • Patankar, S.V. and Prakash, C. (1981). Analysis of the effect of plate thickness on laminar flow and heat transfer in ınterrupted plate passages. International Journal of Heat and Mass Transfer, 24(11): 1801-1810.
  • Yılmaz, T. (1982). Numerical solutions of navier-stokes equations for laminar flow in rows of plates in staggered arrangement. International Journal of Heat and Fluid Flow, 3(4): 201-206.
  • Yılmaz, T. and Ayhan, T. (1983). Birbirleriyle bağlantılı daralan ve genişleyen kanallarda ısı transferi. 4. Ulusal Isı Bilimi ve Tekniği Kongresi, 133-149.
  • Fuji, M., Sensimo, Y., Yamanaka, G. (1988). Heat transfer and pressure drop of perforated surface heat excganger with pasage enlargement and contraction. International Journal of Heat and Mass Transfer. 31(1): 135-142.
  • Kotcioğlu, I., Bölükbaşı, A. (2003). Düşey dikdörtgen kesitli bir kanalda farklı kanatçıklı yüzeylerde ısı transferinin incelenmesi. Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi. 5(2): 89-102.
  • Erdinc, M.T. (2014). Birbirleriyle bağlantılı daralan ve genişleyen kanallarda akış ve ısı geçişinin sayısal olarak incelenmesi. Osmaniye Korkut Ata Üniversitesi Fen Bilimleri Enstitüsü. Yüksek Lisans Tezi. p. 100.
There are 15 citations in total.

Details

Subjects Mechanical Engineering
Journal Section Research Article
Authors

Koray Karabulut 0000-0001-5680-0988

Doğan Engin Alnak

Ferhat Koca

Coşkun Özalp

Publication Date September 20, 2018
Acceptance Date January 23, 2018
Published in Issue Year 2018

Cite

APA Karabulut, K., Alnak, D. E., Koca, F., Özalp, C. (2018). Numerical Analysis of Flow and Heat Transfer for Semi Spheres Placed As Multiple Serials In a Channel. European Mechanical Science, 2(3), 76-82. https://doi.org/10.26701/ems.377446

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