The integral characteristics of the deceleration and entrainment of water droplets by the counter flow of high-temperature combustion products; Experimental Thermal and Fluid Science; Vol. 75

Bibliografiske detaljer
Parent link:	Experimental Thermal and Fluid Science Vol. 75.— 2016.— [P. 54-65]
Hovedforfatter:	Strizhak P. A. Pavel Alexandrovich
Corporate Authors:	Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Кафедра автоматизации теплоэнергетических процессов (АТП), Национальный исследовательский Томский политехнический университет (ТПУ) Энергетический институт (ЭНИН) Лаборатория моделирования процессов тепломассопереноса (ЛМПТ)
Andre forfattere:	Volkov R. S. Roman Sergeevich
Summary:	Title screen This paper presents the results of experimental investigations on the deceleration and entrainment of water droplets during their motion in the counter flow of high-temperature combustion products (up to 1900 K). High-speed video cameras (105 frames per second), specialized software applications (with continuous tracking functions), as well as panoramic optical methods (Particle Image Velocimetry, Stereoscopic Particle Image Velocimetry, Particle Tracking Velocimetry, Shadow Photography) registered the processes under study. We used several typical oils, gasoline, kerosene, acetone, and industrial alcohol to generate combustion products with a controlled high temperature. The initial sizes (radius) of droplets and their velocities were varied from 0.05 mm to 0.35 mm and from 0.5 m/s to 5 m/s. The velocities of counter motion of combustion products were varied from 0.1 m/s to 2.5 m/s. In this paper we have also determined the characteristic trajectory length of the droplets of different sizes until their complete stop (and subsequent entrainment) in the counter flow of high-temperature gases. As a result of studies, we summarized the research results through the establishment of Weber and Reynolds numbers ranges for droplets and gases, when the full stop and entrainment of droplets may occur. This paper also covers a comparison of the characteristics of water droplet deceleration under the conditions of non-stationary (when the temperature of combustion products varies from 1900 K to 400 K in channel) and nearly stationary (when the temperature is 1100 ± 30 K) heat transfer. Thus, it has been found out that the values of these parameters correlate well (deviation did not exceed 7%) under such conditions (stationary and nearly stationary) during short heating (less than 0.5 s). Режим доступа: по договору с организацией-держателем ресурса
Sprog:	engelsk
Udgivet:	2016
Fag:	электронный ресурс труды учёных ТПУ капли вода высокотемпературные продукты сгорания продукты горения выпаривание
Online adgang:	https://doi.org/10.1016/j.expthermflusci.2016.01.018
Format:	Electronisk Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=654651