標題: SINGLE DROPLET COMBUSTION IN A GRAVITATIONAL ENVIRONMENT
作者: HUANG, LW
CHEN, CH
交大名義發表
機械工程學系
National Chiao Tung University
Department of Mechanical Engineering
公開日期: 1-七月-1994
摘要: A theoretical analysis is developed to study the combustion characteristics of a fuel droplet in a gravitational field. The normalized governing system consists of the complete conservation equations in r-z coordinates and includes finite-rate global kinetics. The Clausius-Clapeyron law is applied at the liquid-vapor interface to describe the evaporation process. A modified body-fitted grid generation technique is used to handle irregular boundaries. The effects of changing the droplet diameter (dBAR) and the gravity level (gBAR) are investigated. Under the variation of droplet diameter, flame structures, including isotherms, flame shape, velocity vector field, and mass burning rate are studied in detail. The predicted results exhibit good agreement with experimental data. When the gravity level increases, the computed results show that the flame shape is sensitive to variation in gravity. A simple correlation, mBAR = m0BAR [1 + const. (alpha/gBAR)0.52], is found. Within the elevated gravity domain of experiment, the computed data agree well with measurements obtained by Okajima and Kumagai [10].
URI: http://dx.doi.org/10.1007/BF01584043
http://hdl.handle.net/11536/2422
ISSN: 0042-9929
DOI: 10.1007/BF01584043
期刊: WARME UND STOFFUBERTRAGUNG-THERMO AND FLUID DYNAMICS
Volume: 29
Issue: 7
起始頁: 415
結束頁: 423
顯示於類別:期刊論文