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Combined convection–radiation heat transfer from n-octane combusted gas passing through different geometrical ducts

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Abstract

The combined radiation–convection heat transfer occurs in many industrial devices; in many occasions, the significant role of radiation is neglected in engineering modeling. The current study is an attempt to address the importance of radiation heat transfer involvement in numerical computations. The investigation takes place in two heat transfer modes of with radiation (case_rad) and without radiation consideration (case_norad) for different duct geometries of base cylinder, small cylinder, divergent frustum cone, and convergent frustum cone. To account the radiation effect in the ducts, discrete transfer radiation method is applied, while a weighted sum of gray gases model for absorption coefficient modeling in non-homogenous participating media is appropriate for combustion of n-octane gas in ducts. The convergent duct structure shows the most radiative flux of − 1514.4 W m−2, whereas small cylinder demonstrates the lowest radiative flux of − 1033.14 W m−2. The overall heat flux of convergent configuration outperforms due to homogenous distribution of O2 and high oxygen mass fraction for combustion, while increasing the surface area in the flow direction aids the heat transfer improvement. The small cylinder is characterized with better flow dynamics (Vmax = 25.72 m s−1, TKEmax = 9.45 m2 s−2); however, its deficiency in heat transfer leads to high temperature along the duct (Tmax = 710 K).

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Abbreviations

a :

Absorption coefficient

c :

Soot concentration

i :

Directional radiant intensity

P :

Net radiative flux, partial pressure

q :

Heat flux

R :

Wall thermal resistance

S :

Ray path

DTRM:

Discrete transfer radiation method

EGR:

Exhaust gas recirculation

TDR:

Turbulent dissipation rate

TKE:

Turbulent kinetic energy

WSGGM:

Weighted sum of gray gases model

α :

Emissivity weighting factor

ε :

Total emissivity

λ :

Wavelength

References

  1. Chandratilleke TT, Narayanaswamy R, Wangdhamkoom P. Convective heat transfer in airflow through a duct with wall thermal radiation. IOP Conf Ser Mater Sci Eng. 2010;10(1):012026.

    Article  Google Scholar 

  2. Yang G, Ebadian MA. Analysis of heat transfer in arbitrary shaped ducts: interaction of forced convection and radiation. Int Commun Heat Mass Transf. 1992;19(1):103–15.

    Article  CAS  Google Scholar 

  3. Ramesh N, Venkateshan SP. Experimental study of natural convection in a square enclosure using differential interferometer. Int J Heat Mass Transf. 2001;44(6):1107–17.

    Article  Google Scholar 

  4. Ramesh N, Merzkirch W. Combined convective and radiative heat transfer in side-vented open cavities. Int J Heat Fluid Flow. 2001;22(2):180–7.

    Article  Google Scholar 

  5. Ramesh N, Balaji C, Venkateshan SP. An experimental study of natural convection and surface radiation in an open cavity. Int J Heat Technol. 2001;19(2):89–94.

    CAS  Google Scholar 

  6. Narayanaswamy R, King AJ, Chandratilleke TT. Multimode heat transfer in an enclosure with multiple partitions. Aust J Mech Eng. 2007;4(1):87–92.

    Article  Google Scholar 

  7. Yang W, Blasiak W. Numerical study of fuel temperature influence on single gas jet combustion in highly preheated and oxygen deficient air. Energy. 2005;30(2–4):385–98.

    Article  CAS  Google Scholar 

  8. Salvador S, Commandré JM, Kara Y. Thermal recuperative incineration of VOCs: CFD modelling and experimental validation. Appl Therm Eng. 2006;26(17–18):2355–66.

    Article  CAS  Google Scholar 

  9. Howell JR, Menguc MP, Siegel R. Thermal radiation heat transfer. Boca Raton: CRC Press; 2010.

    Book  Google Scholar 

  10. Zhou LX, Qiao L, Chen XL, Zhang J. A USM turbulence-chemistry model for simulating NOx formation in turbulent combustion. Fuel. 2002;81(13):1703–9.

    Article  CAS  Google Scholar 

  11. Silva CV, França FHR, Vielmo HA. Analysis of the turbulent, non-premixed combustion of natural gas in a cylindrical chamber with and without thermal radiation. Combust Sci Technol. 2007;179(8):1605–30.

    Article  CAS  Google Scholar 

  12. Yin C. Prediction of air-fuel and oxy-fuel combustion through a generic gas radiation property model. Appl Energy. 2017;189:449–59.

    Article  CAS  Google Scholar 

  13. Garréton D, Simonin O. Aerodynamics of steady state combustion chambers and furnaces. In: ASCF Ercoftac CFD workshop, October. 1994. pp. 17–8.

  14. Smith TF, Shen ZF, Friedman JN. Evaluation of coefficients for the weighted sum of gray gases model. J Heat Transf. 1982;104(4):602–8.

    Article  CAS  Google Scholar 

  15. Lockwood, F. C., & Shah, N. G. . A new radiation solution method for incorporation in general combustion prediction procedures. In: Symposium (international) on combustion. Elsevier; 1981. Vol. 18, No. 1, pp. 1405–1414.

  16. AST, A. FIRE manual v2013. Graz: AVL List GmbH; 2013.

    Google Scholar 

  17. Modest MF. The weighted-sum-of-gray-gases model for arbitrary solution methods in radiative transfer. J Heat Transf. 1991;113(3):650–6.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. Department of Mechanical Engineering, Faculty of Engineering, Malayer University, Malayer, 65719-95863, Iran

    Hadi Taghavifar

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  1. Hadi Taghavifar
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Correspondence to Hadi Taghavifar.

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Taghavifar, H. Combined convection–radiation heat transfer from n-octane combusted gas passing through different geometrical ducts. J Therm Anal Calorim 143, 3233–3244 (2021). https://doi.org/10.1007/s10973-020-09463-8

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  • DOI: https://doi.org/10.1007/s10973-020-09463-8

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