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Year 2018, Volume: 5 Issue: 2, 155 - 164, 29.06.2018
https://doi.org/10.17350/HJSE19030000090

Abstract

References

  • Chan YL, Tien CL. A numerical study of two-dimensional natural convection in square open cavities. Numerical Heat Transfer 8 (1985) 65-80.
  • Vafai K, Ettefagh J. The effect of sharp corners on buoyancy-driven flows with particular emphasis on outer boundaries. International Journal of Heat and Mass Transfer 33 (1990) 2311-2328.
  • Vafai K, Ettefagh J. Thermal and fluid flow instabilities in buoyancy-driven flows in open-ended cavities. International Journal of Heat and Mass Transfer 33 (1990) 2329-2344.
  • Khanafer K, Vafai K, Lightston M. Mixed convection heat transfer in two-dimensional open-ended enclosures. International Journal of Heat and Mass Transfer 45 (2002) 5171-5190.
  • Elsayed MM, Chakroun W. Effects of aperture geometry on heat transfer in tilted partially open cavities. Journal of Heat Transfer 121 (1990) 819-827.
  • Khanafer K, Vafai K. Buoyancy-driven flows and heat transfer in open-ended enclosures: Elimination of the extended boundaries. International Journal of Heat and Mass Transfer 43 (2000) 4087-4100.
  • Khanafer K, Vafai K. Effective boundary conditions for buoyancy-driven flows and heat transfer in fully open- ended two-dimensional enclosures. International Journal of Heat and Mass Transfer 45 (2002) 2527-2538.
  • Prianto E, Depecker P. Characteristic of airflow as the effect of balcony, opening design and internal division on indoor velocity: A case study of traditional dwelling in urban living quarter in tropical humid region, Energy and Building 34 (2002) 401-409.
  • Lai CM, Wang YH. Energy-saving potential of buildings envelope designs in residential houses in Taiwan. Energies 4 (2011) 2061-2076. 19.
  • Chan ALS, Chow TT. Investigation on energy performance and energy payback period of application of balcony for residential apartment in Hong Kong. Energy and Building 42 (2010) 2400-2405.
  • Chand I, Bhargava PK, Krishak NLV. Effect of balconies on ventilation inducing aeromotive force on low-rise buildings. Building and Environment. 33 (1998) 385-396.
  • Namli L., Effects of built-in balcony on thermal performance in residential buildings: A case study. Journal of Building Physics 40(2) (2016) 125-143.
  • Roache PJ. Computational Fluid Dynamics. Hermosa, Albuquerque, NM, 1982.
  • Young D. Iterative methods for solving partial differential equations of elliptical type. Transactions of the AMS - American Mathematical Society 76 (1954) 92.A
  • Abu-Mulaweh HI, Armaly BF, Chen TS. Laminar natural convection flow over a vertical forward-facing step. Journal of Thermophysics and Heat Transfer 10 (1996) 517-523.
  • Asan H, Namli L. Laminar natural convection in a pitched roof of triangular cross-section: summer day boundary conditions. Energy and Building 33 (2000) 69-73.
  • Asan H, Namli L. Numerical simulation of buoyant flow in a roof of triangular cross-section under winter day boundary conditions, Energy and Building 33 (2001) 753-757.
  • Penot F. Numerical calculation of two-dimensional natural convection in isothermal open cavities. Numerical Heat Transfer 5 (1982) 421-437.
  • LeQuere O, Humphery JAC, Sherman FS. Numerical calculation of thermally driven two-dimensional unsteady laminar flow in cavities of rectangular cross-section. Numerical Heat Transfer 4 (1981) 249-283.

Thermal Behaviour of the Residential Buildings with Cantilever Beam under Winter Day Boundary Conditions

Year 2018, Volume: 5 Issue: 2, 155 - 164, 29.06.2018
https://doi.org/10.17350/HJSE19030000090

Abstract

I n this study, the thermal behaviour of residential buildings with cantilever beam under winter boundary conditions was numerically investigated by means of the open-ended structure approach. For this purpose, parametric studies were carried out for various ratios of cantilever beam depth/cantilever beam height d/H and Rayleigh numbers using a computer program for no wind laminar flow conditions. Analyses were conducted for Rayleigh numbers in the range of 103 to 106 . The calculations were carried out for the ratios of d/H, namely 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0. The working fluid was treated as air Pr=0.71 . According to the findings, the mean Nu number along with the outer vertical wall surface L of the residential building, in general, decreases as d/H increases. This decrease in the mean Nu number is evident for Ra≤104 , but it appears to be more pronounced after Ra=105 . To have minimum heat loss from a residential building under winter day boundary conditions, it is suggested that the ratio of d/H should be between 0.2 and 0.5.

References

  • Chan YL, Tien CL. A numerical study of two-dimensional natural convection in square open cavities. Numerical Heat Transfer 8 (1985) 65-80.
  • Vafai K, Ettefagh J. The effect of sharp corners on buoyancy-driven flows with particular emphasis on outer boundaries. International Journal of Heat and Mass Transfer 33 (1990) 2311-2328.
  • Vafai K, Ettefagh J. Thermal and fluid flow instabilities in buoyancy-driven flows in open-ended cavities. International Journal of Heat and Mass Transfer 33 (1990) 2329-2344.
  • Khanafer K, Vafai K, Lightston M. Mixed convection heat transfer in two-dimensional open-ended enclosures. International Journal of Heat and Mass Transfer 45 (2002) 5171-5190.
  • Elsayed MM, Chakroun W. Effects of aperture geometry on heat transfer in tilted partially open cavities. Journal of Heat Transfer 121 (1990) 819-827.
  • Khanafer K, Vafai K. Buoyancy-driven flows and heat transfer in open-ended enclosures: Elimination of the extended boundaries. International Journal of Heat and Mass Transfer 43 (2000) 4087-4100.
  • Khanafer K, Vafai K. Effective boundary conditions for buoyancy-driven flows and heat transfer in fully open- ended two-dimensional enclosures. International Journal of Heat and Mass Transfer 45 (2002) 2527-2538.
  • Prianto E, Depecker P. Characteristic of airflow as the effect of balcony, opening design and internal division on indoor velocity: A case study of traditional dwelling in urban living quarter in tropical humid region, Energy and Building 34 (2002) 401-409.
  • Lai CM, Wang YH. Energy-saving potential of buildings envelope designs in residential houses in Taiwan. Energies 4 (2011) 2061-2076. 19.
  • Chan ALS, Chow TT. Investigation on energy performance and energy payback period of application of balcony for residential apartment in Hong Kong. Energy and Building 42 (2010) 2400-2405.
  • Chand I, Bhargava PK, Krishak NLV. Effect of balconies on ventilation inducing aeromotive force on low-rise buildings. Building and Environment. 33 (1998) 385-396.
  • Namli L., Effects of built-in balcony on thermal performance in residential buildings: A case study. Journal of Building Physics 40(2) (2016) 125-143.
  • Roache PJ. Computational Fluid Dynamics. Hermosa, Albuquerque, NM, 1982.
  • Young D. Iterative methods for solving partial differential equations of elliptical type. Transactions of the AMS - American Mathematical Society 76 (1954) 92.A
  • Abu-Mulaweh HI, Armaly BF, Chen TS. Laminar natural convection flow over a vertical forward-facing step. Journal of Thermophysics and Heat Transfer 10 (1996) 517-523.
  • Asan H, Namli L. Laminar natural convection in a pitched roof of triangular cross-section: summer day boundary conditions. Energy and Building 33 (2000) 69-73.
  • Asan H, Namli L. Numerical simulation of buoyant flow in a roof of triangular cross-section under winter day boundary conditions, Energy and Building 33 (2001) 753-757.
  • Penot F. Numerical calculation of two-dimensional natural convection in isothermal open cavities. Numerical Heat Transfer 5 (1982) 421-437.
  • LeQuere O, Humphery JAC, Sherman FS. Numerical calculation of thermally driven two-dimensional unsteady laminar flow in cavities of rectangular cross-section. Numerical Heat Transfer 4 (1981) 249-283.
There are 19 citations in total.

Details

Primary Language Turkish
Journal Section Research Article
Authors

Lutfu Namli This is me

Publication Date June 29, 2018
Published in Issue Year 2018 Volume: 5 Issue: 2

Cite

Vancouver Namli L. Thermal Behaviour of the Residential Buildings with Cantilever Beam under Winter Day Boundary Conditions. Hittite J Sci Eng. 2018;5(2):155-64.

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