bed roughness

简明释义

河床粗糙度

英英释义

例句

1.The study examined the effects of bed roughness on sediment transport in rivers.

这项研究考察了床面粗糙度对河流沉积物运输的影响。

2.Researchers found that increased bed roughness can enhance habitat diversity for aquatic species.

研究人员发现，增加的床面粗糙度可以增强水生物种类的栖息地多样性。

3.In hydraulic modeling, bed roughness is a critical parameter for predicting flow behavior.

在水力模型中，床面粗糙度是预测流动行为的关键参数。

4.Engineers adjusted the bed roughness values to simulate different river conditions.

工程师调整了床面粗糙度值以模拟不同的河流条件。

5.The bed roughness of the channel significantly affects the velocity of water flow.

河道的床面粗糙度显著影响水流速度。

作文

The concept of bed roughness is crucial in the study of fluid dynamics, particularly in understanding the flow of water in rivers and streams. Bed roughness refers to the irregularities and variations in the surface of the riverbed that affect the flow characteristics of water. These irregularities can be caused by various factors, including the size and distribution of sediment particles, vegetation, and anthropogenic influences such as construction or dredging. Understanding bed roughness is essential for predicting how water flows, which in turn affects erosion, sediment transport, and habitat conditions for aquatic life.In natural rivers, bed roughness plays a significant role in determining the velocity of the water flow. For example, a river with a smooth bed will generally have a higher flow velocity compared to one with a rough bed. This is because the roughness creates turbulence, which can slow down the flow. Engineers and environmental scientists often measure bed roughness using various methods, including the use of roughness coefficients derived from empirical studies. These coefficients help in modeling river behavior and are critical in designing effective flood management systems.Moreover, bed roughness affects sediment transport. In areas where the bed is rough, sediment tends to settle and accumulate, whereas in smoother areas, sediments may be swept away more easily. This has implications not only for the physical landscape but also for the ecological health of the river. Fish and other aquatic organisms rely on specific habitats that can be influenced by the presence of rough or smooth beds. Therefore, understanding bed roughness is not just an engineering concern but also an ecological one.Additionally, changes in bed roughness can occur due to human activities, such as dam construction or riverbank modifications. Such changes can significantly alter the flow regime and ecological balance of the river system. For instance, when a dam is built, it can create a smooth reservoir bed upstream, which may lead to changes in sediment transport and habitat availability downstream. Consequently, monitoring and managing bed roughness is vital for maintaining healthy river ecosystems.In conclusion, the significance of bed roughness extends beyond mere measurements; it is a fundamental aspect of river dynamics that influences flow patterns, sediment transport, and ecological habitats. As we continue to engage in activities that impact our waterways, it becomes increasingly important to consider the implications of bed roughness in our environmental and engineering practices. By doing so, we can better protect and manage our vital water resources for future generations.

“床面粗糙度”这一概念在流体动力学的研究中至关重要，尤其是在理解河流和溪流中的水流动时。“床面粗糙度”指的是河床表面的不规则性和变化，这些因素会影响水流的特性。这些不规则性可能由多种因素造成，包括沉积物颗粒的大小和分布、植被以及人为影响，如建筑或疏浚。理解“床面粗糙度”对于预测水流的行为至关重要，而这又反过来影响侵蚀、沉积物运输和水生生物的栖息地条件。在自然河流中，“床面粗糙度”在决定水流速度方面发挥着重要作用。例如，床面光滑的河流通常会比床面粗糙的河流具有更高的流速。这是因为粗糙度会产生湍流，从而减缓水流。工程师和环境科学家通常使用各种方法来测量“床面粗糙度”，包括从经验研究中得出的粗糙度系数。这些系数有助于建模河流行为，并且在设计有效的洪水管理系统时至关重要。此外，“床面粗糙度”还会影响沉积物运输。在床面粗糙的区域，沉积物往往倾向于沉积和积累，而在较光滑的区域，沉积物可能更容易被冲走。这不仅对物理景观产生影响，也对河流的生态健康产生影响。鱼类和其他水生生物依赖于特定的栖息地，这些栖息地可能受到粗糙或光滑床面的影响。因此，理解“床面粗糙度”不仅是一个工程问题，也是一个生态问题。此外，由于人类活动（如筑坝或河岸改造），“床面粗糙度”可能会发生变化。这种变化可能显著改变河流系统的流动模式和生态平衡。例如，当建造大坝时，它可以在上游创造一个光滑的水库床，这可能导致下游沉积物运输和栖息地可用性的变化。因此，监测和管理“床面粗糙度”对于维持健康的河流生态系统至关重要。总之，“床面粗糙度”的重要性超越了简单的测量；它是河流动态的一个基本方面，影响着流动模式、沉积物运输和生态栖息地。随着我们继续参与影响水道的活动，考虑“床面粗糙度”在环境和工程实践中的影响变得愈发重要。通过这样做，我们可以更好地保护和管理我们宝贵的水资源，为子孙后代服务。