原名「台灣學術線上」
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1
題名:NUMERICAL SIMULATION OF TURBULENT DISPERSION OF FINITE SIZE PARTICLES    
數值模擬計算顆粒在擾流中擴散
著者:Wei-Chung Chen(陳維宗)
出版地區:台灣
出版城市:台北市
學科:地球科學
刊名:Science Reports of the National Taiwan University ACTA Oceanographica Taiwanica
卷期:6期(1976.12)
頁碼:88-97
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

利用數值模擬計算,研究顆粒在二次擾流中(例如砂粒於水中)運動情形。 擾流場數值是由直接積分Navier-Stokes公式所得,顆粒在擾流場中活動情形,可依Basset-Boussinesq-Oseen公式經由數值模擬計算解得。 計算結果顯示顆粒在渦流中心漸漸減少而向渦流外圍聚集,此種現象和吾人所熟知的二次元流體特性相吻合,蓋粒子因受渦流旋轉離心力影響而由內(漩渦中心)向外擴散。
The characteristics of a two-dimensional turbulent dispersion of finite size particles (such as sand transported by water) was studied through numerical simulation. The turbulent flow field was generated numerically by direct integration of the Navier-Stokes equation. The Basset-Boussinesq-Oseen equation which governs the motion of finite spherical particales in a flow field was then solved numerically over that turbulent flow field. The results suggest an increase in concentration in the interfacial regions between vortices followed by a decrease in concentration in the core of vortices. This results coincide with what one would expect to occur in a two-dimensional fluid flow where vortices play a predominant role: centrifugal forces are responsible for the migration of particles.


    

本卷期目次
Science Reports of the National Taiwan University ACTA Oceanographica Taiwanica 6期 (1976.12)
STUDY OF THE KUROSHIO CURRENT BETWEEN TAIWAN AND ISHIGAKIJIMA/ Tsu-You Chu
ELECTROPHORETIC STUDY OF THE MUSCLE EXTRACTS OF BULLET TUNA (AUXIS ROCHEI) IN WATERS AROUND TAIWAN/ Su-Zan YehRong-Tszong Yang
THE DEMERSAL FISH STOCKS OF THE WATERS OF NORTH AND NORTHWEST AUSTRALIA/ Hsi-Chiang Liu
STUDIES ON ALGIN FROM BROWN ALGAE OF TAIWAN I. ESTIMATION OF YIELD AND QUALITY OF ALGIN/ Hong-Nong ChouYoung-Meng Chiang
ECOLOGICAL AND MORPHOLOGICAL STUDY OF THE FISH-FAUNA FROM THE WATERS AROUND TAIWAN AND ITS ADJACENT ISLANDS 17. A study of sex reversal in a pomacanthid fish, Genicanthus semifasciatus (KAMOHARA)/ Shih-Chieh ShenChen-Hsiang Liu
ECOLOGICAL AND MORPHOLOGICAL STUDY OF THE FISH-FAUNA FROM THE WATERS AROUND TAIWAN AND ITS ADJACENT ISLANDS 20. Study on the goatfishes-Mullidae/ Shih-Chieh Shen
魚類族群仔稚時期餌料的消費和加入量之間的關係/ 王健雄
STRONTIUM DISTRIBUTION IN COASTAL RANGE ANDESITES, EASTERN TAIWAN/ Lu-Chin ChenTung-Wuu Huang
A NOTE ON THE SIGNIFICANT WAVE DERIVED FROM JONSWAP SPECTRUM/ Joe WangNai-Kuang Liang
COMMENT ON M. C. LIN'S PAPER ON INTERNAL WAVES IN A STRATIFIED INCOMPRESSIBLE FLUID
PROCESSES MODIFYING THE ISOTOPIC COMPOSITION OF DISSOLVED OXYGEN/ Woei-Lih Jeng
STUDY ON MERCURY IN THE WATERS, SEDIMENTS AND BENTHONIC ORGANISMS ALONG CHAI-I COASTAL AREA/ Tsu-Chang HungTsung-Tien Lin
TIDAL CURRENTS IN THE OFFSHORE AREA OF SU-AOU IN RELATION TO TIDES OF THE LAND STATION ALONG THE EAST COST OF TAIWAN/ K. ChengT. Y. Chu
ON THE STEADY STATE CURRENTS IN SHALLOW SEAS OR LAKES/ San-Lang Lien
DISTRIBUTION OF Na, Mg, Ca, K, Sr AND Li IN SEA WATERS FROM THE BASHI CHANNEL/ Hsien-Wen LiJu-Chin Chen
GEOCHEMISTRY OF LANHSU ANDESITES/ Ju-Chin Chen
NUMERICAL SIMULATION OF TURBULENT DISPERSION OF FINITE SIZE PARTICLES/ Wei-Chung Chen
ON UPWELLING ALONG THE EASTERN COAST OF TAIWAN: A REVIEW OF HYDROGRAPHIC AND CHEMICAL DATA/ Gudrun M. Bodvarsson
 
   
 
   

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