• 流体力学 •

圆环旋转黏性液体射流破碎液滴粒径与速度数量密度分布相关性研究

1. 北京交通大学机械与电子控制工程学院, 北京 100044
• 收稿日期:2015-03-17 修回日期:2016-03-23 出版日期:2016-05-18 发布日期:2016-05-12
• 通讯作者: 宁智,教授,主要研究方向:射流雾化以及微粒沉降等.E-mail:zhining@bjtu.edu.cn E-mail:zhining@bjtu.edu.cn
• 基金资助:

国家自然科学基金(5127600,北京市自然科学基金(3132016),中央高校基本科研业务费专项基金(2016JBM049)和国家高技术研究发展计划(2013AA065303)资助项目.

STUDY ON CORRELATION OF BREAKUP DROPLET SIZE AND VELOCITY DISTRIBUTIONS OF AN ANNULAR SWIRLING VISCOUS LIQUID SHEET

Yan Kai, Ning Zhi, Lü Ming, Sun Chunhua, Fu Juan, Li Yuanxu

1. College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
• Received:2015-03-17 Revised:2016-03-23 Online:2016-05-18 Published:2016-05-12

Abstract:

Pressure swirling atomizers are wildly used in the fuel injection systems of aero-engines, marine engines, vehicle gasoline direct injection engines and gas turbines, et al. Considering about a pressure swirling atomizer liquid jet, the correlation of breakup droplet size and velocity distributions of an annular swirling viscous liquid sheet is studied. Joint probability density function of droplet size and velocity distribution of an annular swirling viscous liquid sheet is reduced based on maximum entropy method. The correlation between droplet size distribution and droplet velocity distribution are then discussed. Results show that with the right form of joint probability density function, the conservation laws of mass, momentum and energy must be included together as the constraint conditions. Droplet size and velocity distributions are closely related. And the liquid sheet swirling strength does not affect the structure of joint probability density function a lot, but the liquid swirling strength affect the distribution region to some extent.

Key words:

an annular swirling viscous liquid sheet|breakup droplet|droplet size and velocity distributions|maximum entropy principle

• U473
{"extraction_info": {"found_math": true, "script_math_tex": 0, "script_math_asciimath": 0, "math_annotations": 0, "math_alttext": 0, "mathml": 0, "mathjax_tag": 0, "mathjax_inline_tex": 0, "mathjax_display_tex": 0, "mathjax_asciimath": 1, "img_math": 0, "codecogs_latex": 0, "wp_latex": 0, "mimetex.cgi": 0, "/images/math/codecogs": 0, "mathtex.cgi": 0, "katex": 0, "math-container": 0, "wp-katex-eq": 0, "align": 0, "equation": 0, "x-ck12": 0, "texerror": 0, "math_score": 0.1834680140018463, "perplexity": 6693.971611569407}, "config": {"markdown_headings": false, "markdown_code": true, "boilerplate_config": {"ratio_threshold": 0.18, "absolute_threshold": 10, "end_threshold": 15, "enable": true}, "remove_buttons": true, "remove_image_figures": true, "remove_link_clusters": true, "table_config": {"min_rows": 2, "min_cols": 3, "format": "plain"}, "remove_chinese": true, "remove_edit_buttons": true, "extract_latex": true}, "warc_path": "s3://commoncrawl/crawl-data/CC-MAIN-2019-30/segments/1563195525414.52/warc/CC-MAIN-20190717221901-20190718003901-00042.warc.gz"}