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Atomization and Sprays

Publicou 12 edições por ano

ISSN Imprimir: 1044-5110

ISSN On-line: 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

A COMPARISON OF DIESEL AND JATROPHA METHYL ESTER (JME) SPRAY CHARACTERISTICS: EFFECT OF NOZZLE ENTRY RADIUS

Volume 26, Edição 10, 2016, pp. 961-982
DOI: 10.1615/AtomizSpr.2015013972
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RESUMO

In the present article, diesel and Jatropha methyl ester (JME) sprays are compared in a detailed manner in terms of their macroscopic and microscopic spray characteristics. The comparison is made at injection pressures of 500,1000, and 1500 bar by injecting the fuels through a nozzle having a single hole of 200 µm diameter and 70 µm entry radius into a spray chamber (with optical access). From the measurements of macroscopic spray structure, it is observed that the spray tip penetration is faster and spray cone angle is narrower by approximately 10% for JME than those of diesel, indicating that the JME spray atomization is poor. Droplet sizes are measured for diesel and JME sprays at 4 ms after the start of injection using particle/droplet image analysis, which showed that the Sauter mean diameter (SMD) of JME sprays is higher by around 5% as compared to that of diesel. Subsequently, a nozzle with a hole diameter of approximately 200 µm having an entry radius of10 µm is studied to understand the effect of nozzle entry radius on breakup of diesel and JME sprays. Computational fluid dynamic modeling of inner-nozzle flow showed that there is significant inner-nozzle cavitation for this nozzle. A comparison of spray structure at injection pressures of 500 and 1500 bar showed that the spray tip penetration is slower and spray cone angles are wider by approximately 5% to 12% for sprays from the cavitating nozzle than those from the noncavitating nozzle. Droplet size comparison showed that SMD of spray from the cavitating nozzle is lower by approximately 5% as compared to that from the noncavitating nozzle. Thus improvement in spray atomization due to inner-nozzle cavitation may be able to compensate for the inferior atomization of JME, although with an associated penalty in the coefficient of discharge.

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