淤积工况下薄壁三角堰流量特征研究
【目的】探究淤积工况下薄壁三角堰的流量特征。【方法】利用计算流体力学软件FLUENT 19.0，结合室内试验，模拟薄壁三角堰渠道从无淤积至淤满过程中9个淤积工况下的过堰流场，分析流场内的流量、流速和水位变化，探讨渠道流量特征随淤积厚度的变化情况。【结果】模拟流量与理论流量、实测流量数值吻合，渠道内流速分布符合流速分布一般规律，证明模拟结果准确可靠；当理论流量为0.221 0 L/s时，随着堰前淤积的加厚，模拟流量与实测流量呈无规律的波动变化，波动范围为理论流量的-0.45%~8.60%；当理论流量为0.221 0 L/s时，对比无淤积和淤积工况下的堰前水面曲线，模拟与实测曲线均在近堰板处出现不...
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| Veröffentlicht in: | Guanʻgai paishui xuebao 2022-10, Vol.41 (10), p.139-146 |
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| creator | Huibing, GUANG WANG, Jian LI Zesen CAO Bozhao LIU, Chao WANG Kanghong |
| description | 【目的】探究淤积工况下薄壁三角堰的流量特征。【方法】利用计算流体力学软件FLUENT 19.0，结合室内试验，模拟薄壁三角堰渠道从无淤积至淤满过程中9个淤积工况下的过堰流场，分析流场内的流量、流速和水位变化，探讨渠道流量特征随淤积厚度的变化情况。【结果】模拟流量与理论流量、实测流量数值吻合，渠道内流速分布符合流速分布一般规律，证明模拟结果准确可靠；当理论流量为0.221 0 L/s时，随着堰前淤积的加厚，模拟流量与实测流量呈无规律的波动变化，波动范围为理论流量的-0.45%~8.60%；当理论流量为0.221 0 L/s时，对比无淤积和淤积工况下的堰前水面曲线，模拟与实测曲线均在近堰板处出现不同程度的的水位壅高，高度随淤积厚度的增加而波动上升。【结论】淤积会使堰前水位壅高且增大薄壁三角堰过流能力，而堰流公式中缺少适应这种变化的修正参数，导致生产中所得理论流量偏小。 |
| doi_str_mv | 10.13522/j.cnki.ggps.2021651 |
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All Rights Reserved.</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/ggps/ggps.jpg</thumbnail><link.rule.ids>314,777,781,861,27905,27906</link.rule.ids></links><search><creatorcontrib>Huibing, GUANG</creatorcontrib><creatorcontrib>WANG, Jian</creatorcontrib><creatorcontrib>LI Zesen</creatorcontrib><creatorcontrib>CAO Bozhao</creatorcontrib><creatorcontrib>LIU, Chao</creatorcontrib><creatorcontrib>WANG Kanghong</creatorcontrib><title>淤积工况下薄壁三角堰流量特征研究</title><title>Guanʻgai paishui xuebao</title><description>【目的】探究淤积工况下薄壁三角堰的流量特征。【方法】利用计算流体力学软件FLUENT 19.0，结合室内试验，模拟薄壁三角堰渠道从无淤积至淤满过程中9个淤积工况下的过堰流场，分析流场内的流量、流速和水位变化，探讨渠道流量特征随淤积厚度的变化情况。【结果】模拟流量与理论流量、实测流量数值吻合，渠道内流速分布符合流速分布一般规律，证明模拟结果准确可靠；当理论流量为0.221 0 L/s时，随着堰前淤积的加厚，模拟流量与实测流量呈无规律的波动变化，波动范围为理论流量的-0.45%~8.60%；当理论流量为0.221 0 L/s时，对比无淤积和淤积工况下的堰前水面曲线，模拟与实测曲线均在近堰板处出现不同程度的的水位壅高，高度随淤积厚度的增加而波动上升。【结论】淤积会使堰前水位壅高且增大薄壁三角堰过流能力，而堰流公式中缺少适应这种变化的修正参数，导致生产中所得理论流量偏小。</description><subject>Deposition</subject><subject>Dynamic models</subject><subject>Experimental data</subject><subject>Flow rates</subject><subject>Flow simulation</subject><subject>Flow velocity</subject><subject>Fluid flow</subject><subject>Free surfaces</subject><subject>Open channels</subject><subject>Sedimentation & deposition</subject><subject>Sediments</subject><subject>Thickness measurement</subject><subject>Velocity distribution</subject><subject>Water flow</subject><subject>Water levels</subject><issn>1672-3317</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNpFjz9Lw0AYh29QsNR-AzdxTHzvvdxdMkrxHxRcdC53uSQYJY2NxTkgSnEQijgXVIqTLrV18dM0Tf0WRio4_ZaH38NDyAYFmzKOuB3bfnJ2akdRmtkISAWnK6RGhUSLMSrXSCPLYgBADpJ7rEZgPnkuR2_F5KW4Gc-md4vH6-Ipn037i9GgGL7Px_n37X3Z_yy-8nL4UL5-rJPVUJ1nQeNv6-Rkb_e4eWC1jvYPmzstK6Xouhaii1yrMEAMQFFtQqM9rR2lDBgjhJCMaukanxnH4ShC0H4VEARcgI_MYXWytfy9Ukmokqgdd3rdpDK2f-OqNqQA1K24zSWXdjsXvSC7_AcZeC4iMibZDwpdY5I</recordid><startdate>20221001</startdate><enddate>20221001</enddate><creator>Huibing, GUANG</creator><creator>WANG, Jian</creator><creator>LI Zesen</creator><creator>CAO Bozhao</creator><creator>LIU, Chao</creator><creator>WANG Kanghong</creator><general>Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage</general><general>西北农林科技大学,陕西杨凌 712100%韩城市水土保持工作站,陕西韩城 714000</general><scope>3V.</scope><scope>7X2</scope><scope>8FE</scope><scope>8FH</scope><scope>8FK</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>M0K</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20221001</creationdate><title>淤积工况下薄壁三角堰流量特征研究</title><author>Huibing, GUANG ; 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| source | DOAJ Directory of Open Access Journals |
| subjects | Deposition Dynamic models Experimental data Flow rates Flow simulation Flow velocity Fluid flow Free surfaces Open channels Sedimentation & deposition Sediments Thickness measurement Velocity distribution Water flow Water levels |
| title | 淤积工况下薄壁三角堰流量特征研究 |
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