|
|
a theoretical mass transfer approach for prediction of droplets growth inside supersonic laval nozzle
|
|
|
|
|
نویسنده
|
rajaee shooshtari heydar ,shahsavand akbar
|
منبع
|
journal of chemical and petroleum engineering - 2014 - دوره : 48 - شماره : 1 - صفحه:57 -68
|
چکیده
|
Proper estimation of droplet growth rate plays a crucial role on appropriate prediction of supersonic separators performance for separation of fine droplets from a gas stream. up to now, all available researches employ empirical or semiempirical correlations to define the relationship between droplet growth rate (dr/dt) and other operating variables such as temperatures (t and tl), pressure (p) and condensation rate (ml). these empirical or semiempirical equations are developed for pure component systems and should not be extended to binary or multicomponents systems. a novel theoretical approach is presented in this article which provides a fundamental equation to find the droplet growth rate by resorting to mass transfer equations. the new model uses a combination of mass transfer equations and mass and energy balances to estimate the droplet growth rate, droplet temperature and condensation rate simultaneously. although the simulation results indicate that the proposed method provides impressive results when validated with several real experimental data, however, the main advantage of the present approach is that it can be easily extended to binary or multicomponents systems. to the best of our knowledge, the proposed approach has not been addressed previously.
|
کلیدواژه
|
condensation ,growth rate ,laval nozzle ,mass transfer ,supersonic separator
|
آدرس
|
ferdowsi university of mashhad, faculty of engineering, department of chemical engineering, ایران, ferdowsi university of mashhad, faculty of engineering, department of chemical engineering, ایران
|
پست الکترونیکی
|
shahsavand@um.ac.ir
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|