sherwood number

简明释义

舍伍德数

英英释义

例句

1.The calculation of the Sherwood number is essential for determining mass transfer rates in chemical reactors.

计算Sherwood number对于确定化学反应器中的质量传递速率至关重要。

2.Researchers often refer to the Sherwood number when analyzing diffusion processes.

研究人员在分析扩散过程时常常提到Sherwood number。

3.The Sherwood number can be influenced by factors such as flow velocity and temperature.

Sherwood number可以受到流速和温度等因素的影响。

4.To optimize the design of a membrane system, engineers must calculate the Sherwood number accurately.

为了优化膜系统的设计，工程师必须准确计算Sherwood number。

5.In heat exchangers, a high Sherwood number indicates efficient mass transfer.

在热交换器中，高Sherwood number表示有效的质量传递。

作文

The concept of the Sherwood number is a fundamental aspect in the field of mass transfer, particularly in the study of convective mass transfer processes. Named after the British engineer Thomas Sherwood, the Sherwood number serves as a dimensionless quantity that characterizes the ratio of convective mass transfer to diffusive mass transfer. It is often used in various engineering applications, including chemical engineering, environmental engineering, and process design.Understanding the Sherwood number is crucial for engineers and scientists as it helps them to predict how substances will behave in different environments. For instance, when designing a reactor or a separation column, knowing the Sherwood number allows engineers to estimate how efficiently a substance will mix or react under specific conditions. This can lead to more efficient designs and processes, ultimately saving time and resources.The formula for calculating the Sherwood number is given by:\[ Sh = \frac{kL}{D} \]where \( k \) is the mass transfer coefficient, \( L \) is the characteristic length, and \( D \) is the diffusion coefficient. This equation highlights the importance of both convection and diffusion in mass transfer processes. A high Sherwood number indicates that convective mass transfer is dominant, while a low value suggests that diffusion plays a more significant role.In practical applications, the Sherwood number can be influenced by several factors, including fluid properties, flow patterns, and temperature. For example, in turbulent flow conditions, the Sherwood number tends to be higher due to increased mixing and agitation, which enhances mass transfer rates. Conversely, in laminar flow, the Sherwood number may be lower since the fluid layers move in parallel without much interaction.One area where the Sherwood number is particularly important is in heat exchangers. In these systems, heat and mass transfer occur simultaneously, and understanding the Sherwood number can help optimize the design for better performance. Engineers often use empirical correlations based on the Sherwood number to predict the efficiency of heat exchangers and ensure they operate at optimal conditions.Moreover, the Sherwood number is also critical in environmental studies, especially in the context of pollutant dispersion in air and water. By analyzing the Sherwood number, researchers can assess how quickly contaminants will spread in a given medium, which is vital for environmental protection efforts and regulatory compliance.In conclusion, the Sherwood number is an essential parameter in mass transfer analysis, providing valuable insights into the dynamics of convective and diffusive processes. Its applications span across various fields, making it a key concept for engineers and scientists alike. By mastering the principles surrounding the Sherwood number, professionals can enhance their ability to design efficient systems, predict behavior in different scenarios, and contribute to advancements in technology and environmental stewardship.

在质量传递领域，Sherwood number（谢伍德数）的概念是一个基本的方面，特别是在对流质量传递过程的研究中。该数值以英国工程师托马斯·谢伍德（Thomas Sherwood）的名字命名，Sherwood number 是一个无量纲量，表征对流质量传递与扩散质量传递的比率。它常用于化学工程、环境工程和工艺设计等各种工程应用中。理解Sherwood number 对于工程师和科学家至关重要，因为它帮助他们预测物质在不同环境中的行为。例如，在设计反应器或分离柱时，了解Sherwood number 可以使工程师估算在特定条件下物质混合或反应的效率。这可以导致更高效的设计和过程，从而节省时间和资源。计算Sherwood number 的公式为：\[ Sh = \frac{kL}{D} \]其中 \( k \) 是质量传递系数，\( L \) 是特征长度，\( D \) 是扩散系数。这个方程突显了对流和扩散在质量传递过程中的重要性。高Sherwood number 表明对流质量传递占主导地位，而低值则表明扩散在其中起着更重要的作用。在实际应用中，Sherwood number 可能受到多种因素的影响，包括流体特性、流动模式和温度。例如，在湍流流动条件下，由于混合和搅拌增加，Sherwood number 通常较高，这增强了质量传递速率。相反，在层流中，Sherwood number 可能较低，因为流体层平行移动，几乎没有相互作用。Sherwood number 特别重要的一个领域是热交换器。在这些系统中，热量和质量传递同时发生，理解Sherwood number 可以帮助优化设计以获得更好的性能。工程师通常使用基于Sherwood number 的经验相关性来预测热交换器的效率，并确保其在最佳条件下运行。此外，Sherwood number 在环境研究中也至关重要，尤其是在空气和水中污染物扩散的背景下。通过分析Sherwood number，研究人员可以评估污染物在给定介质中传播的速度，这对于环境保护工作和法规遵从至关重要。总之，Sherwood number 是质量传递分析中的一个重要参数，为对流和扩散过程的动态提供了宝贵的见解。它的应用跨越多个领域，使其成为工程师和科学家的关键概念。通过掌握围绕Sherwood number 的原理，专业人士可以增强设计高效系统的能力，预测不同场景中的行为，并为技术和环境保护的进步做出贡献。