暂无评论
图文详情
- ISBN:9787563074518
- 装帧:一般胶版纸
- 册数:暂无
- 重量:暂无
- 开本:24cm
- 页数:175页
- 出版时间:2022-02-01
- 条形码:9787563074518 ; 978-7-5630-7451-8
内容简介
本书介绍了沙纹形态在波浪变化动力下的沙纹的形态演变过程及其动力机理。作者通过开展物理模型试验的方式,探索了在动力变化情况下,沙纹发育的滞后过程,与此同时对影响沙纹发育速率的控制因素提出了新的见解,作者认为沙纹的历史形态影响沙纹的发育。后,作者通过运用数学模型,探索了不同形态沙纹底水动力的影响。本书将为微地貌研究学者提供新的思路和见解。
目录
Abstract
Acknowledgements
List of Symbols and Abbreviations
Chapter 1 Introduction
1.1 General introduction
1.2 Scope of the study
1.3 Organization of the study
Chapter 2 Literature review
2.1 Introduction
2.2 Equilibrium ripple characteristics
2.3 Predictions of transient ripple dimensions and hysteresis
2.4 Defects
2.5 Vortex dynamics
2.5.1 Laboratory experiments
2.5.2 Numerical simulations
2.6 Flow three-dimensionality over regular ripples
Chapter 3 Laboratory experiments on the role of hysteresis, defect dynamics and initial perturbation on wave-generated ripple
development
3.1 Introduction
3.2 Methodology
3.2.1 Experiment setup
3.2.2 Bedform analysis
3.3 Results
3.3.1 Changes in wave height and wave period
3.3.2 Influence of initial perturbation
3.4 Discussion
3.4.1 Initial ripple development
3.4.2 Defects and hysteresis
3.4.3 Modelling of the equilibrium ripple wavelength
3.5 Conclusions
Chapter 4 Investigating the response of wave-generated ripples to changes in wave forcing
4. 1 Introduction
4.2 Methodology
4.3 Results and discussions
4.3.1 Dependence of the hysteresis time scale on wave orbital diameter and mobility number
4.3.2 Threshold value of the Shields parameter for ripple readjustment
4.3.3 Effects of defect density and defect interactions on bedform evolution
4.4 Conclusions
Chapter 5 Three-dimensional flow structures over ripples: laboratory measurements and numerical modelling
5.1 Introduction
5.1.1 Wave-generated ripples
5.1.2 Vortex dynamics
5.1.3 Three-dimensionality in flow structures
5.2 Methodology
5.2.1 Laboratory experiments
5.2.2 High-resolution Large Eddy Simulation model
5.3 Results
5.3.1 Streamwise comparison
5.3.2 Vortex structures in the spanwise direction
5.3.3 Vortex strength
5.4 Discussion
5.4.1 Velocity at the ripple crest
5.4.2 Vortex structures
5.4.3 Implications for morphodynamics
5.4.4 Limitations
5.5 Conclusions
Chapter 6 High-resolution large eddy simulations of vortex dynamics over ripple defects
6.1 Introduction
6.1.1 Influence of defects on hysteresis
6.1.2 Hydrodynamics over wave-generated ripples
6.2 Methodology
6.3 Results
6.3.1 Velocity and vortieity field
6.3.2 Vortex characteristics
6.3.3 Shear stress distribution
6.4 Discussion
6.4.1 Maximum velocity at ripple crest
6.4.2 Vortex dynamics
6.4.3 Implieations for morphodynamics
6.5 Conclusions
Chapter 7 Conclusions and future work
7.1 Conclusions
7.2 Future work
References
Appendix A Other relevant parameters in Exp. 1 and Exp. 2
Appendix B Bedform patterns and three-dimensional flow patterns
Acknowledgements
List of Symbols and Abbreviations
Chapter 1 Introduction
1.1 General introduction
1.2 Scope of the study
1.3 Organization of the study
Chapter 2 Literature review
2.1 Introduction
2.2 Equilibrium ripple characteristics
2.3 Predictions of transient ripple dimensions and hysteresis
2.4 Defects
2.5 Vortex dynamics
2.5.1 Laboratory experiments
2.5.2 Numerical simulations
2.6 Flow three-dimensionality over regular ripples
Chapter 3 Laboratory experiments on the role of hysteresis, defect dynamics and initial perturbation on wave-generated ripple
development
3.1 Introduction
3.2 Methodology
3.2.1 Experiment setup
3.2.2 Bedform analysis
3.3 Results
3.3.1 Changes in wave height and wave period
3.3.2 Influence of initial perturbation
3.4 Discussion
3.4.1 Initial ripple development
3.4.2 Defects and hysteresis
3.4.3 Modelling of the equilibrium ripple wavelength
3.5 Conclusions
Chapter 4 Investigating the response of wave-generated ripples to changes in wave forcing
4. 1 Introduction
4.2 Methodology
4.3 Results and discussions
4.3.1 Dependence of the hysteresis time scale on wave orbital diameter and mobility number
4.3.2 Threshold value of the Shields parameter for ripple readjustment
4.3.3 Effects of defect density and defect interactions on bedform evolution
4.4 Conclusions
Chapter 5 Three-dimensional flow structures over ripples: laboratory measurements and numerical modelling
5.1 Introduction
5.1.1 Wave-generated ripples
5.1.2 Vortex dynamics
5.1.3 Three-dimensionality in flow structures
5.2 Methodology
5.2.1 Laboratory experiments
5.2.2 High-resolution Large Eddy Simulation model
5.3 Results
5.3.1 Streamwise comparison
5.3.2 Vortex structures in the spanwise direction
5.3.3 Vortex strength
5.4 Discussion
5.4.1 Velocity at the ripple crest
5.4.2 Vortex structures
5.4.3 Implications for morphodynamics
5.4.4 Limitations
5.5 Conclusions
Chapter 6 High-resolution large eddy simulations of vortex dynamics over ripple defects
6.1 Introduction
6.1.1 Influence of defects on hysteresis
6.1.2 Hydrodynamics over wave-generated ripples
6.2 Methodology
6.3 Results
6.3.1 Velocity and vortieity field
6.3.2 Vortex characteristics
6.3.3 Shear stress distribution
6.4 Discussion
6.4.1 Maximum velocity at ripple crest
6.4.2 Vortex dynamics
6.4.3 Implieations for morphodynamics
6.5 Conclusions
Chapter 7 Conclusions and future work
7.1 Conclusions
7.2 Future work
References
Appendix A Other relevant parameters in Exp. 1 and Exp. 2
Appendix B Bedform patterns and three-dimensional flow patterns
展开全部
本类五星书
本类畅销
-
勒维特之星-大发现系列丛书
¥4.0¥16.0 -
喜马拉雅山珍稀鸟类图鉴
¥27.2¥68.0 -
昆虫的生存之道
¥12.2¥38.0 -
昆虫采集制作及主要目科简易识别手册
¥15.0¥50.0 -
古文诗词中的地球与环境事件
¥8.7¥28.0 -
声音简史
¥21.3¥52.0 -
不匹配的一对:动物王国的性别文化
¥16.7¥42.8 -
物理学之美-插图珍藏版
¥20.7¥69.0 -
现代物理学的概念和理论
¥18.4¥68.0 -
技术史入门
¥14.4¥48.0 -
几何原本
¥35.6¥93.6 -
改变世界的发现
¥15.4¥48.0 -
图说相对论(32开平装)
¥13.8¥46.0 -
数学的魅力;初等数学概念演绎
¥7.7¥22.0 -
星空探奇
¥14.0¥39.0 -
宇宙与人
¥10.5¥35.0 -
数学专题讲座
¥13.3¥29.0 -
袁隆平口述自传
¥19.9¥51.0 -
为了人人晓得相对论
¥3.9¥13.5 -
一代神话:哥本哈根学派
¥8.1¥15.5