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Heat and mass transfer in the near-wall gas-droplets jet along the non-adiabatic pipe wall

Terekhov V., Pakhomov M.

Archives of Thermodynamics

2005

Vol. 26, no. 4

17-36

The two-velocity, two-temperature approximation of the Eulerian approach was used to develop, within the framework of continuum mechanics, a model for predicting turbulent flows of air with suspended liquid droplets after their injection into the wall zone of the flow. The influence of droplets evaporation processes in the wall jet on heat transfer between the two-phase gas-drop flow and the heated wall is examined.

Heat and mass transfer in two-phase gas-droplet turbulent developing flow in a tube

Terekhov V., Pakhomov M.

Archives of Thermodynamics

2002

Vol. 23, no 4

59-80

A computation model is developed, where flow dynamics together with heat and mass transfer in a turbulent two-phase gas-droplet developing tube flow are numerically studied. Turbulent characteristics of the gas phase were calculated using the Nagano-Tagawa LRN k - model. It is shown that, with increasing initial droplet diameter the heat transfer between the duct surface and the vapour-gas mixture becomes much less intense, whereas the wall friction increases only insignificantly. The computed flow-dynamics and heat and mass transfer data are compared with previously reported experimental and numerical results, and a fairly good agreement between the compared data is obtained.