THREE DIMENSIONAL FLOW STRUCTURES AROUND A LARGE-SCALE DEEP SCOUR IN THE KISO RIVER
The existence of a vertical vortex (vortex having vertical axis) is considered to be the cause of development and sustention of large-scale local scouring in the Kiso River. In order to make clear the 3D flow structures in this deep local scour, we conducted a field observation and model experiments...
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| Veröffentlicht in: | Doboku Gakkai Ronbunshu. B1, Suikogaku = Journal of Japan Society of Civil Engineers. Ser. B1, Hydraulic Engineering Ser. B1 (Hydraulic Engineering), 2018, Vol.74(4), pp.I_643-I_648 |
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| container_end_page | I_648 |
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| container_issue | 4 |
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| container_title | Doboku Gakkai Ronbunshu. B1, Suikogaku = Journal of Japan Society of Civil Engineers. Ser. B1, Hydraulic Engineering |
| container_volume | 74 |
| creator | TOMINAGA, Akihiro SASSA, Naohiko HARA, Yuji KUNO, Yuka |
| description | The existence of a vertical vortex (vortex having vertical axis) is considered to be the cause of development and sustention of large-scale local scouring in the Kiso River. In order to make clear the 3D flow structures in this deep local scour, we conducted a field observation and model experiments. From the result of ADCP set on the bottom of the scour hole, the velocity in the hole was increasing and the vertical vortex was developing, with an increase of river discharge. It is indicated that considerable magnitude of velocity was generated even near the bottom by the action of vertical vortex. This vortex was recognized in the model experiments, but the vortex structure was rather unstable. Consequently, the vertical vortex contributes to develop and maintain the large-scale local scouring. |
| doi_str_mv | 10.2208/jscejhe.74.I_643 |
| format | Article |
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In order to make clear the 3D flow structures in this deep local scour, we conducted a field observation and model experiments. From the result of ADCP set on the bottom of the scour hole, the velocity in the hole was increasing and the vertical vortex was developing, with an increase of river discharge. It is indicated that considerable magnitude of velocity was generated even near the bottom by the action of vertical vortex. This vortex was recognized in the model experiments, but the vortex structure was rather unstable. Consequently, the vertical vortex contributes to develop and maintain the large-scale local scouring.</description><identifier>EISSN: 2185-467X</identifier><identifier>DOI: 10.2208/jscejhe.74.I_643</identifier><language>jpn</language><publisher>Tokyo: Japan Society of Civil Engineers</publisher><subject>3D flow structure ; ADCP ; Computational fluid dynamics ; Flow structures ; Fluid flow ; Kiso River ; local scouring ; model experiment ; River discharge ; River flow ; Rivers ; Scour ; Scouring ; Three dimensional flow ; Velocity ; vertical vortex ; Vortices</subject><ispartof>Journal of Japan Society of Civil Engineers, Ser. 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Consequently, the vertical vortex contributes to develop and maintain the large-scale local scouring.</description><subject>3D flow structure</subject><subject>ADCP</subject><subject>Computational fluid dynamics</subject><subject>Flow structures</subject><subject>Fluid flow</subject><subject>Kiso River</subject><subject>local scouring</subject><subject>model experiment</subject><subject>River discharge</subject><subject>River flow</subject><subject>Rivers</subject><subject>Scour</subject><subject>Scouring</subject><subject>Three dimensional flow</subject><subject>Velocity</subject><subject>vertical vortex</subject><subject>Vortices</subject><issn>2185-467X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9kMFPwjAYxRsTEwly99jE87Bru7U7LqNA49xMu6m3phudsCDgBgf-e6cQL987fL_3XvIAePDRFGPEn9q-du3aTRmdShNScgNG2OeBR0P2cQcmfb-pEAoDjgnxR0AXSyUEnMkXkWmZZ3EK52n-DnWhyqQoldAwVnmZzWAM01gthKeTOB0MQrxCneSlgjKDxVLAZ6lzqOSbUPfgtrHb3k2uOgbFXBTJ0kvzhRzcXst55HEW4aqOKIto2GDkCEaMoMqygHHbVAhH1gUr1CBq-YoT7GO2og67CHPOfYTIGDxeYg_d_vvk-qNp96duNzQajAeeckajgUouVNsf7aczh27zZbuzsd1xU2-duc5lGDX09_xt9v-t17Yzbkd-ANDIYYM</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>TOMINAGA, Akihiro</creator><creator>SASSA, Naohiko</creator><creator>HARA, Yuji</creator><creator>KUNO, Yuka</creator><general>Japan Society of Civil Engineers</general><general>Japan Science and Technology Agency</general><scope>7QH</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>2018</creationdate><title>THREE DIMENSIONAL FLOW STRUCTURES AROUND A LARGE-SCALE DEEP SCOUR IN THE KISO RIVER</title><author>TOMINAGA, Akihiro ; SASSA, Naohiko ; HARA, Yuji ; KUNO, Yuka</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j889-8792bc947946f20e320730ba7578afb029ae5d0f04a8d832127d4e2e928881003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>2018</creationdate><topic>3D flow structure</topic><topic>ADCP</topic><topic>Computational fluid dynamics</topic><topic>Flow structures</topic><topic>Fluid flow</topic><topic>Kiso River</topic><topic>local scouring</topic><topic>model experiment</topic><topic>River discharge</topic><topic>River flow</topic><topic>Rivers</topic><topic>Scour</topic><topic>Scouring</topic><topic>Three dimensional flow</topic><topic>Velocity</topic><topic>vertical vortex</topic><topic>Vortices</topic><toplevel>online_resources</toplevel><creatorcontrib>TOMINAGA, Akihiro</creatorcontrib><creatorcontrib>SASSA, Naohiko</creatorcontrib><creatorcontrib>HARA, Yuji</creatorcontrib><creatorcontrib>KUNO, Yuka</creatorcontrib><collection>Aqualine</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Doboku Gakkai Ronbunshu. B1, Suikogaku = Journal of Japan Society of Civil Engineers. Ser. B1, Hydraulic Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>TOMINAGA, Akihiro</au><au>SASSA, Naohiko</au><au>HARA, Yuji</au><au>KUNO, Yuka</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>THREE DIMENSIONAL FLOW STRUCTURES AROUND A LARGE-SCALE DEEP SCOUR IN THE KISO RIVER</atitle><jtitle>Doboku Gakkai Ronbunshu. B1, Suikogaku = Journal of Japan Society of Civil Engineers. Ser. B1, Hydraulic Engineering</jtitle><addtitle>J. JSCE, Ser. B1</addtitle><date>2018</date><risdate>2018</risdate><volume>74</volume><issue>4</issue><spage>I_643</spage><epage>I_648</epage><pages>I_643-I_648</pages><eissn>2185-467X</eissn><abstract>The existence of a vertical vortex (vortex having vertical axis) is considered to be the cause of development and sustention of large-scale local scouring in the Kiso River. In order to make clear the 3D flow structures in this deep local scour, we conducted a field observation and model experiments. From the result of ADCP set on the bottom of the scour hole, the velocity in the hole was increasing and the vertical vortex was developing, with an increase of river discharge. It is indicated that considerable magnitude of velocity was generated even near the bottom by the action of vertical vortex. This vortex was recognized in the model experiments, but the vortex structure was rather unstable. Consequently, the vertical vortex contributes to develop and maintain the large-scale local scouring.</abstract><cop>Tokyo</cop><pub>Japan Society of Civil Engineers</pub><doi>10.2208/jscejhe.74.I_643</doi></addata></record> |
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| ispartof | Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 2018, Vol.74(4), pp.I_643-I_648 |
| issn | 2185-467X |
| language | jpn |
| recordid | cdi_proquest_journals_2232148749 |
| source | Alma/SFX Local Collection |
| subjects | 3D flow structure ADCP Computational fluid dynamics Flow structures Fluid flow Kiso River local scouring model experiment River discharge River flow Rivers Scour Scouring Three dimensional flow Velocity vertical vortex Vortices |
| title | THREE DIMENSIONAL FLOW STRUCTURES AROUND A LARGE-SCALE DEEP SCOUR IN THE KISO RIVER |
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