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Hydrodynamic analyzer is newly developed using small inner diameter settling tubes, four sets of photo-detector, and computerized auto-handling and analysis, for the reconstruction of the sedimentary environments based on the special hydrodynamic characters of sand and sandstone. The four detectors can measure the changes in the settling velocities just after the sample is dropped and caused by the hydrodynamic interaction with small inner diameter tube. The analyzed results are shown on the computer display during the analysis. The analyzer is enough compact to use at sampling field and field station. The photo-detector is composed of high luminous emission diode and phototransistor. Logarithm of the detected signal of phototransistor corresponds well with the amount of passing sand grains. The dispersion correction is made on the detected signal for the distances from falling position to detectors. The glass beads experiments show that settling velocity can be converted to the grain-size using equations of Stokes, Allen, Karman and Newton. Two equations for the conversion are inserted into the four equations, based on the relation of the flow resistance and Reynolds Number. Using these equations, weight base contents are calculated from the detected signals. 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堆積物流体力学解析装置
https://doi.org/10.14945/00000377
https://doi.org/10.14945/0000037771ccfb52-d9ac-4f7f-823d-02a4d5ee9080
名前 / ファイル | ライセンス | アクション |
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KJ00000102470.pdf (1.9 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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公開日 | 2008-01-25 | |||||||
タイトル | ||||||||
タイトル | 堆積物流体力学解析装置 | |||||||
言語 | ||||||||
言語 | jpn | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | sand | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | grain-size | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | distribution | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | Reynolds Number | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | hydrodynamic interaction | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | settling tube | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | settling velocity | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | beach sand | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | turbidite | |||||||
キーワード | ||||||||
主題Scheme | Other | |||||||
主題 | bioturbation | |||||||
資源タイプ | ||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
資源タイプ | departmental bulletin paper | |||||||
ID登録 | ||||||||
ID登録 | 10.14945/00000377 | |||||||
ID登録タイプ | JaLC | |||||||
タイトル(別言語) | ||||||||
その他のタイトル | Hydrodynamic analyzer for sediments | |||||||
著者 |
新妻, 信明
× 新妻, 信明
WEKO
181
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書誌情報 |
静岡大学地球科学研究報告 巻 28, p. 33-44, 発行日 2001-07 |
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出版者 | ||||||||
出版者 | 静岡大学地球科学教室 | |||||||
NDC | ||||||||
主題Scheme | NDC | |||||||
主題 | 458 | |||||||
抄録 | ||||||||
内容記述タイプ | Abstract | |||||||
内容記述 | The behavior of sand vary hydro-dynamically with the Reynolds Number range from 1 to 1000 for grain size and settling velocity, corresponding from laminar flow to turbulent flow. Hydrodynamic analyzer is newly developed using small inner diameter settling tubes, four sets of photo-detector, and computerized auto-handling and analysis, for the reconstruction of the sedimentary environments based on the special hydrodynamic characters of sand and sandstone. The four detectors can measure the changes in the settling velocities just after the sample is dropped and caused by the hydrodynamic interaction with small inner diameter tube. The analyzed results are shown on the computer display during the analysis. The analyzer is enough compact to use at sampling field and field station. The photo-detector is composed of high luminous emission diode and phototransistor. Logarithm of the detected signal of phototransistor corresponds well with the amount of passing sand grains. The dispersion correction is made on the detected signal for the distances from falling position to detectors. The glass beads experiments show that settling velocity can be converted to the grain-size using equations of Stokes, Allen, Karman and Newton. Two equations for the conversion are inserted into the four equations, based on the relation of the flow resistance and Reynolds Number. Using these equations, weight base contents are calculated from the detected signals. The measurements using the new analyzer show following results. 1) The grains of beach sand from the surf zone have normal distribution for the settling time, not for the logarithm of the grain size. 2) The sandstone of the submarine fan-delta sedimentary sequence in the North Fossa Magna can be classified into five types using the grain-size distribution on the logarithm of the grain size and hydrodynamic behavior. 3) Special behaviors are detected in the hydrodynamic behavior for turbidites and sediments with strong bioturbations in the submarine fan-delta sedimentary sequence. | |||||||
ISSN | ||||||||
収録物識別子タイプ | ISSN | |||||||
収録物識別子 | 03886298 | |||||||
NII論文ID | ||||||||
関連タイプ | isIdenticalTo | |||||||
識別子タイプ | NAID | |||||||
関連識別子 | 110000413404 | |||||||
NII書誌ID | ||||||||
収録物識別子タイプ | NCID | |||||||
収録物識別子 | AN00103190 | |||||||
フォーマット | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | application/pdf | |||||||
著者版フラグ | ||||||||
出版タイプ | VoR | |||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |