| 张人杰,袁理明.浮力羽流低风速的多点实时测量[J].火灾科学,1993,2(1):51-55. |
| 浮力羽流低风速的多点实时测量 |
| Lostantaneous measurement of low velocity of plume field |
| 投稿时间：1992-12-30 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目:国家自然科学基金资助项目 |
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| 中文关键词: 浮力羽流 风速场 多点测量 |
| 英文关键词:buoyant plume |
| 摘要点击次数: 555 |
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| 中文摘要: |
| 作者发展了一种浮力羽流低风速的多点实时测量技术。测头端部安装耐热玻璃小球，直径0.8mm，球内装有热电偶和加热电阻丝，测头将风速转换为热电偶的电势，每支测头必须经过专用校准热风洞的单支校验。使用巡回检测系统记录多个测头的电位，得到流场各点风速的统计平均值，实现了低风速场的多点实时测量。本测量系统对火灾科学、环境可行和气象学的实验研究和实地观测是很有用的测量技术。 |
| 英文摘要: |
| An instantaneous measurement technique of plume field with low velocity has been developed using proble with heat resistant glass spheres on top. The glass spheres arc 0.8mm in diameter each and have thermocouples and heating wires set in. With the probes, gas velocity is turned into voltage of thesmocomples. Every probe must be calibrated by a special equipment—a small wind tunels. The instantaneous measurement is then achieved through calulating statistic average of low velocity of every point with voltage values of thermocouples which are obtained bu data acquisition system.The measuring system stated above is a useful technique to fire science,meteorology and envioronment sicence,etc. |
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