| PIV系统测量误差的实验评价及在柴油机喷雾测量上的应用 |
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| 引用本文： | 董明哲,汪洋,蒋宁涛.PIV系统测量误差的实验评价及在柴油机喷雾测量上的应用[J].车用发动机,2005(1):57-61. |
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| 作者姓名： | 董明哲 汪洋 蒋宁涛 |
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| 作者单位： | 天津大学内燃机燃烧学国家重点实验室,天津,300072;天津大学内燃机燃烧学国家重点实验室,天津,300072;天津大学内燃机燃烧学国家重点实验室,天津,300072 |
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| 基金项目： | 国家自然科学基金，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 提出了一种PIV系统(Particle Image Velocimetry)测量误差的实验评价方法,并建立了一套PIV误差 实验评价系统。得到了PIV测量误差在空间及时间上的概率分布特性;对PIV实验参数中的几个关键参数进行优 化。应用PIV系统,对高压共轨式电控喷射系统的喷雾粒子速度场进行了测量和研究。研究表明,在喷雾过程后 期,喷雾体内部出现大尺度的涡流结构;提高喷射压力之后,出现涡流结构的时刻提前。
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| 关 键 词： | PIV 测量误差评价 参数优化 喷雾测量 柴油机 |
| 文章编号： | 1001-2222(2005)01-0057-05 |
| 修稿时间： | 2004年9月3日 |
An Experimental Method for Evaluating the PIV Measure Errors and PIV Application in Diesel Spray Measurement |
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| DONG Ming-zhe,WANG Yang,JIANG Ning-tao.An Experimental Method for Evaluating the PIV Measure Errors and PIV Application in Diesel Spray Measurement[J].Vehicle Engine,2005(1):57-61. |
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| Authors: | DONG Ming-zhe WANG Yang JIANG Ning-tao |
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| Abstract: | This paper presents an experimental method to evaluate the PIV system (Particle Image Velocimetry) measure errors. 2-D PIV evaluation system has been developed. Due to the analyses of errors, the spatial and temporal statistical characters of the measure errors are obtained and two experimental parameters that are significant in optimizing PIV performances are identified. The PIV system is employed in diesel spray measurement in this paper. The conclusions shows that vortex structures appears in the spray during last injection period, and when the common rail pressure raised, the time of appearing this structure while also become short. |
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| Keywords: | PIV |
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