Characteristic features of evaporative cooling of droplets in high-temperature flows

Article

Numerical investigation of the evaporative cooling of water droplets in a high-temperature gas flow (temperature above 1000°C) has been carried out for two limiting regimes: a continuous medium and a free-molecular regime. The results of modeling have shown that with a small content of water vapor in the flow, due to evaporative cooling the droplet temperature attains a stationary value that is lower than the stream temperature by hundreds of degrees.

Keywords

heat transfer coefficient droplet temperature flow reactor thermophoresis 

References

  1. 1.
    N. A. Fuks, Evaporation of Drops in a Gaseous Medium [in Russian], Nauka, Moscow (1955).Google Scholar
  2. 2.
    S. P. Fisenko, A. A. Brin, and A. I. Petruchik, Evaporative cooling of water in a mechanical draft cooling tower, Int. J. Heat Mass Transfer, 47, 167–177 (2004).CrossRefGoogle Scholar
  3. 3.
    A. A. Brin, Evaporation of water drops in a high-temperature gas flow, in: Heat and Mass Transfer-2008, ITMO im. A. V. Lykova, Minsk (2009), pp. 147–150.Google Scholar
  4. 4.
    A. P. Grinin and A. A. Lezova, Stationary concentration establishment in a growing or evaporating droplet of ideal binary solution, Colloid J., 68, No. 6, 759–768 (2006).CrossRefGoogle Scholar
  5. 5.
    P. A. Kryukov, V. Y. Levashov, and S. S. Sazhin, Evaporation of diesel fuel droplets: kinetic versus hydrodynamic models, Int. J. Heat Mass Transfer, 47, 2541–2549 (2004).MATHCrossRefGoogle Scholar
  6. 6.
    S. P. Fisenko and A. A. Brin, Heat and mass transfer and condensation interference in a laminar flow diffusion chamber, Int. J. Heat Mass Transfer, 49, 1004–1014 (2006).MATHCrossRefGoogle Scholar
  7. 7.
    S. P. Fisenko, W. N. Wang, I. W. Lenggoro, and K. Okyuama, Evaporative cooling of micron-sized droplets in a low-pressure aerosol reactor, Chem. Eng. Sci., 61, 6029–6034 (2006).CrossRefGoogle Scholar
  8. 8.
    S. P. Fisenko and J. A. Khodyko, Low pressure evaporative cooling of micron-sized droplets of solutions and its novel applications, Int. J. Heat Mass Transfer, 52, 3842–3849 (2009).MATHCrossRefGoogle Scholar
  9. 9.
    L. Talbot, R. K. Cheng, R. W. Schaefer, and D. R. Willis, Thermophoresis of particles in a heated boundary layer, J. Fluid. Mech., 101, 737–758 (1980).CrossRefGoogle Scholar
  10. 10.
    V. M. Verzhbitskii, Principles of Numerical Methods [in Russian], Nauka, Moscow (2002).Google Scholar
  11. 11.
    H. Matsuoka, S. Sekiguchi, K. Nishizawa, and T. Suzuki, Midinfrared extinction spectra of submicron carbohydrate particles generated by a pneumatic atomizer, J. Phys. Chem. A, 113, 4686–4690 (2009).CrossRefGoogle Scholar
  12. 12.
    S. P. Fisenko and Yu. A. Khodyko, Kinetics of the Formation of Ensembles of Nanoparticles in Evaporation of Solution Droplets, Preprint No. 7 of the A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, Minsk (2010).Google Scholar

Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  1. 1.A. V. Luikov Heat and Mass Transfer InstituteNational Academy of Sciences of BelarusMinskBelarus

Personalised recommendations