Modelling of heat and mass transfer processes in phase transformation cycle of sprayed water into gas: 5. Numerical modelling optimization of phase transformation cycle for droplets slipping in gas flow

Gintautas Miliauskas, M. Maziukienė, E. Puida

Abstract


Condensing and transit evaporation regimes for phase transformation cycle were modelled for slipping droplets in humid gas. By concluded results of droplet thermal, energetic, dynamics and phase transformation parameters P it is based on that according to unit initial Reynolds number grouped droplet cloud, universality of dimensionless transfer parameters PFo functions graphs is valid in aspect of droplet dispersity for cases defined by water and gas initial temperature and humidity. According to phase transformation cycle modelling results for intensively slipping droplet by conditions 0 Re  50 it was received that by "c" heat transfer model calculated droplet moment mass mean temperature m,"c" T can exceed up to 2.5 K temperature m,"k " T calculated according to "k" heat transfer model. An applied droplet mass mean temperature model can lead to ± 0.05 percent imbalance for calculated droplet surface area.

DOI: http://dx.doi.org/10.5755/j01.mech.23.1.13689


Keywords


humid gas, slipping water droplets, phase transformation cycle, numerical research optimization

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Print ISSN: 1392-1207
Online ISSN: 2029-6983