OBSERVATIONS OF CANDLE FLAMES UNDER VARIOUS ATMOSPHERES IN MICROGRAVITY

被引：43

作者：

ROSS, HD ^{[1
]}

SOTOS, RG ^{[1
]}

TIEN, JS ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV,DEPT MECH & AEROSP ENGN,CLEVELAND,OH 44106

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 1991年 / 75卷 / 1-3期

基金：

美国国家航空航天局;

关键词：

D O I：

10.1080/00102209108924084

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The ignition and behavior of candle flames was observed photographically in free-fall (drop tower) tests under 19%—25% O2concentrations in a nitrogen-diluted, 1 atm environment. A few tests were also conducted with helium dilution and with ignition in normal gravity. Compared to normal gravity, the microgravity flames were of lower power and greater sphericity. When a candle burning in normal gravity was released into microgravity, the flame shape changed immediately from the classical tear-drop to a sphere; the visible soot diminished throughout the test time. Tests with a longer duration of microgravity are being pursued in order to study extinction behavior, flame interactions, and burning rates. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：155 / 160

页数：6