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Experimental Model for Shear Stress Measurement in Vascular Circulation by Micro Particle Image Velocimetry
http://hdl.handle.net/10191/19591
http://hdl.handle.net/10191/1959144b92e8b-6d4b-4e41-9ac9-d0fabb3998ce
名前 / ファイル | ライセンス | アクション |
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110006483825.pdf (905.1 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-09-28 | |||||
タイトル | ||||||
タイトル | Experimental Model for Shear Stress Measurement in Vascular Circulation by Micro Particle Image Velocimetry | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Experimental Model for Shear Stress Measurement in Vascular Circulation by Micro Particle Image Velocimetry | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | flow visualization | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | micro PIV | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | microcirculation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | shear stress | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | liver transplantation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | velocity measurement | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
Sato, Yoshinobu
× Sato, Yoshinobu× Fujisawa, Nobuyuki× Hatakeyama, Katsuyoshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The present study investigated the basic architectonics of a micro particle image velocimetry (PIV) system and measured shear stress in a model of hepatic microcirculation for the purpose of understanding mechanical stress in small-for-size graft liver transplantation. The flow velocity was measured using a micro PIV system in a straight confluence, with bifurcation channels of the hepatic sinusoid model made of a clear acrylics that was 300μm in width and 100μm in height. In the micro PIV system, two strobes as a light source illuminated an object from underneath, and its visual flow images were recorded into a computer using a high-resolution CCD camera. The flow visualization was performed by adding distilled water to proper nylon tracer particles of 1μm in diameter (specific gravity: 1.02). The experimental velocity profile measured by this micro PIV system was in good accordance with both the results obtained using the three-dimensional Navier-Strokes equations on a square tube and Hagen-Poiseulle equations on a circular tube, which confirmed the suitability of this measurement system. The flow velocity after both confluence and branching in the model of hepatic circulation very rapidly became similar to that of the straight flow. The wall shear stress was calculated using an equation of τ=μ・du/dy, based on the measured mean velocity distribution. The measurement data of shear stress in the straight flow was accurate with an error of 6%. This micro PIV system had sufficient reliability for measuring the shear stress in hepatic microcirculation and serve as a new instrument for understanding pathological conditions in hepatic microcirculation in small-for-size liver transplantation. | |||||
書誌情報 |
Acta medica et biologica en : Acta medica et biologica 巻 54, 号 3, p. 77-83, 発行日 2006-09 |
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出版者 | ||||||
出版者 | Niigata University School of Medicine | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 05677734 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00508361 | |||||
権利 | ||||||
権利情報 | 本文データは学協会の許諾に基づきCiNiiから複製したものである | |||||
著者版フラグ | ||||||
値 | publisher |