Suscripción a Biblioteca: Guest
Atomization and Sprays

Publicado 12 números por año

ISSN Imprimir: 1044-5110

ISSN En Línea: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

EVAPORATION BEHAVIOR OF A WATER DROPLET IMPINGING ONTO HEATED POROUS SUBSTRATES

Volumen 27, Edición 3, 2017, pp. 207-226
DOI: 10.1615/AtomizSpr.2016016797
Get accessGet access

SINOPSIS

In the present study, the evaporation behavior of a water droplet impinging onto heated porous substrates was investigated both experimentally and analytically. Four porous substrates having different permeability (3.5 × 10−12m2 − 56.5 × 10−12m2) were prepared by sintering uniform-sized glass beads and the surface temperature was varied from 50°C to 90°C. The temperature of the droplet prior to impact was 30°C and the impinging velocity was changed from 0.8 to 2.3 m/s while the drop diameter was fixed at 2.6 mm. As the temperature difference between water droplet and substrate surface was increased by a factor of 3 (from 20°C to 60°C), the time of complete evaporation decreased by 75% on average. As the impact velocity was increased by about threefold, the evaporation time became shorter by 30% in average. Furthermore, as the permeability of the substrate was increased to 16 times the lowest value, the evaporation took longer by about 30%. In addition, numerical simulation was conducted to estimate the evaporation time with appropriate assumptions. The general trend of time variations of the temperatures at the surface and inside the porous substrates was predicted reasonably well. The advection of the humid-air flow through the porous structure on the temperature variation of the substrate increases with the higher substrate temperature but the effect is relatively minor. Rather, the major role of the porous structure is to maintain the maximum wetted diameter throughout the evaporation process by pinning of the edge. The numerical simulation with various simplifying assumptions overestimated the evaporation time by 25% compared to the measured values.

Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones Precios y Políticas de Suscripcione Begell House Contáctenos Language English 中文 Русский Português German French Spain