Coherent structures around obstacles on the boundary and the control of sediment transport by coherent eddies 底面上の物体周りの組織的渦構造と組織渦による土砂輸送の制御
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著者
書誌事項
- タイトル
-
Coherent structures around obstacles on the boundary and the control of sediment transport by coherent eddies
- タイトル別名
-
底面上の物体周りの組織的渦構造と組織渦による土砂輸送の制御
- 著者名
-
田中, 則夫
- 著者別名
-
タナカ, ノリオ
- 学位授与大学
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東京大学
- 取得学位
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工学博士
- 学位授与番号
-
甲第8951号
- 学位授与年月日
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1991-03-29
注記・抄録
博士論文
目次
- Contents / p4 (0005.jp2)
- ABSTRACT / p2 (0003.jp2)
- ACKNOWLEDGMENTS / p3 (0004.jp2)
- NOMENCLATURE / p13 (0014.jp2)
- 1 INTRODUCTION / p1 (0017.jp2)
- 2 REVIEW OF PREVIOUS STUDIES AND SCOPE OF THE PRESENT STUDY / p5 (0021.jp2)
- 2.1 Review of Experimental Studies on Coherent Structures around Obstacles / p5 (0021.jp2)
- 2.2 Review of Experimental Studies on Coherent Structures around Obstacles in Stratified Flow / p9 (0025.jp2)
- 2.3 Scope of the Present Study / p10 (0026.jp2)
- I COHERENT STRUCTURES AROUND OBSTACLES ON THE BOUNDARY IN NEUTRALLY AND STABLY STRATIFIED FLOW / p11 (0027.jp2)
- 3 FLOW STRUCTURES AROUND A HEMISPHERE ON A FLAT PLATE IN NEUTRAL FLOW / p12 (0028.jp2)
- 3.1 General / p12 (0028.jp2)
- 3.2 Experimental Apparatus and Procedures / p12 (0028.jp2)
- 3.3 Vortex Structures behind the Hemisphere / p14 (0030.jp2)
- 3.4 Structure of the Recirculation Zone in front of the Hemisphere / p19 (0035.jp2)
- 3.5 Effect of Boundary Layer Thickness on the Recirculation Zone in front of and behind the Hemisphere / p26 (0042.jp2)
- 3.6 Effect of Obstacle Aspect Ratio on the Formation or the Shedding Strouhal Number / p29 (0045.jp2)
- 3.7 Effect of Water Depth and Roughness Height Ratio / p31 (0047.jp2)
- 3.8 Summary / p33 (0049.jp2)
- 4 CHARACTERISTICS OF THE COHERENT EDDIES BEHIND A HEMISPHERIC OBSTACLE ON A FLAT PLATE / p34 (0050.jp2)
- 4.1 General / p34 (0050.jp2)
- 4.2 Experimental Apparatus and Procedures / p34 (0050.jp2)
- 4.3 Flow behind Hemisphere / p36 (0052.jp2)
- 4.4 Velocity Field before and after the Coalescence / p48 (0064.jp2)
- 4.5 Summary / p51 (0067.jp2)
- 5 FLOW STRUCTURES AROUND A HEMISPHERE ON A FLAT PLATE IN STRATIFIED FLOW / p52 (0068.jp2)
- 5.1 General / p52 (0068.jp2)
- 5.2 Apparatus and Procedures / p52 (0068.jp2)
- 5.3 Flow Structures of Thick Stable Layer's Case / p54 (0070.jp2)
- 5.4 Flow Structures of Thin Stable Layer's Case / p59 (0075.jp2)
- 5.5 Characteristics of Front Separation Zone / p60 (0076.jp2)
- 5.6 Characteristics of Wake Flows / p63 (0079.jp2)
- 5.7 Summary / p69 (0085.jp2)
- II THE CONTROL OF SEDIMENT TRANSPORT BY COHERENT EDDIES IN FRONT OF A WEIR / p70 (0086.jp2)
- 6 ACCUMULATION OF SANDS IN FRONT OF A WEIR AND LIMIT OF LOCAL SCOUR / p71 (0087.jp2)
- 6.1 General / p71 (0087.jp2)
- 6.2 Analytical Approach / p71 (0087.jp2)
- 6.3 Experiment / p79 (0095.jp2)
- 6.4 Results and Discussions / p80 (0096.jp2)
- 6.5 Summary / p86 (0102.jp2)
- 7 PROMOTION OF SEDIMENT SUSPENSION UTILIZING COHERENT EDDIES AROUND AN OBSTACLE IN FRONT OF A WEIR / p87 (0103.jp2)
- 7.1 General / p87 (0103.jp2)
- 7.2 Experimental Apparatus and Procedures / p88 (0104.jp2)
- 7.3 Efficiency of an Obstacle as a Promotor of Suspended Sediments:Results of Experiments-A / p90 (0106.jp2)
- 7.4 Effect of the Obstacle as a Sediment Suspension Promotor in front of a Weir.:Results of Experiments-B / p94 (0110.jp2)
- 7.5 Summary / p98 (0114.jp2)
- 8 CONCLUSIONS / p100 (0116.jp2)
- 8.1 Coherent Structures around Obstacles on the Boundary / p100 (0116.jp2)
- 8.2 Control of Sediment Transport by Coherent Eddies / p102 (0118.jp2)
- REFERENCES / p103 (0119.jp2)
- APPENDIX A / p112 (0128.jp2)
- A.1 Water Channel / p112 (0128.jp2)
- A.2 Towing Tank System / p113 (0129.jp2)
- A.3 Data Processing Procedure Visualized by Dye / p115 (0131.jp2)
- A.4 Data Processing Procedure Visualized by Aluminum Particles / p116 (0132.jp2)
- APPENDIX B / p119 (0135.jp2)
- B.1 Details of Characteristics of Sands / p119 (0135.jp2)
- B.2 Concentration / p119 (0135.jp2)
- APPENDIX C / p121 (0137.jp2)
- C.1 Experiments on Changing Boundary Layer Thickness / p121 (0137.jp2)
- C.2 Experiments on Changing Water Depth and Roughness Height Ratio / p123 (0139.jp2)
- C.3 Experiments on Thick Stable Layer's Stratified Flow / p124 (0140.jp2)
- C.4 Experiments on Thin Stable Layer's Stratified Flow / p126 (0142.jp2)
- APPENDIX D / p129 (0145.jp2)
- D.1 Organized Structure around a Hemicylinder / p129 (0145.jp2)
- D.2 Average Velocity Field / p133 (0149.jp2)
- D.3 Summary / p136 (0152.jp2)