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| 絮凝池流场量测技术的研究 |
| Study on measurement technology of the flow field in the flocculation tank |
| 投稿时间：2015-05-31 |
| DOI：10.3969/j.issn.1005-5630.2015.06.003 |
| 中文关键词: 往复隔板絮凝池 现场中试 粒子图像测速 数值模拟 |
| 英文关键词:reciprocating baffled flocculation tank middle field tests particle image velocimetry numerical simulation |
| 基金项目:国家自然科学基金(51279108);上海大学生创新创业训练计划(SH2014122、SH201510252117);上海市科委基础研究重大项目(13DJ1400105);宁波市社会发展科技项目(2012C50038);沪江基地研究专项(B14003) |
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| 中文摘要: |
| 针对往复隔板絮凝池廊道狭窄,水流拐弯处涡漩流场量测十分困难的问题,采用室内模拟、现场中试和数值模拟三种量测手段,对其流场进行了研究。采用粒子图像测速技术,建立了二维水流数学模型,得到不同边界条件对流场水力状况影响的流场粒子图像。由现场中试可知,改进后的絮凝池混凝效果明显好转,微小涡漩增多,可以达到高效混凝,并且模拟实验可与物模实验所得结果相互验证。 |
| 英文摘要: |
| It is very difficult to measure the full flow field because of narrow gallery and complex hydraulic flow pattern on the corner in the reciprocating baffled flocculation tank. The particle image velocimetry and middle field tests and numerical simulation are used. This paper uses an advanced particle image velocimetry technology, and develops a two-dimensional numerical model. It can be seen clearly that the improvement of hydraulic conditions of flow field in the different boundary conditions through the flow particle image. By means of the middle field tests, coagulation effect has improved significantly in the improved flocculation, and the addition of tiny eddies can achieve effective flocculation. The comparison shows that the numerical results are in agreement with the experiment results of the flocculation tank. |
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