Recent Advances in Hydraulic Machinery and Its Application in Marine Engineering

Dear Colleagues,

Since ancient times, water, as the source of life, has also played a pivotal role in the field of mechanics, powering production work and civilization. From the ancient waterwheels cleverly driven by water flow to Archimedes' screw pump, a groundbreaking invention that revolutionized the world, the evolution of hydraulic machinery has been a magnificent epic chronicling the realization of human wisdom.

With technological advancements, hydraulic machinery has undergone constant innovation and evolution. Currently, water turbines stand at the heart of both large and small hydropower stations, providing a steady and efficient supply of clean energy to contemporary society. Pumps, on the other hand, are widely used in various fields such as water conservancy engineering and industrial processes, playing a crucial role. Particularly in the context of carbon peaking and carbon neutrality, reversible pump–turbines have emerged as leading contenders in large-scale energy storage due to their unique advantages.

As an important branch of hydraulic machinery, ocean fluid machinery plays an indispensable role in the development of marine resources and the construction of marine engineering. Its performance in both steady and unsteady environments directly impacts changes in mechanical performance. Therefore, a thorough exploration of the internal flow state of ocean fluid machinery is crucial for enhancing its efficiency and stability, carrying significant academic value and practical implications.

With the deepening of research, modern tools are constantly being utilized to study the internal flow mechanisms of ocean fluid machinery. By utilizing advanced numerical simulation techniques, experimental testing methods, and data analysis approaches, we can reveal the core mechanisms of internal flow from multiple perspectives, optimize equipment design, improve energy efficiency and safety, and enhance operational stability, reliability, and flexibility.

In light of this, this Special Issue aims to gather the latest research achievements on the internal flow mechanisms of ocean fluid machinery, showcase progress and innovative trends within the field, and establish a platform for researchers in related fields to exchange ideas and collaborate. We eagerly welcome original research and review articles (among other article types) from scholars and experts—exploring the mysteries of internal flow mechanisms in ocean fluid machinery and driving the continuous development of this field to contribute more wisdom and strength to human marine endeavors—that delve into the following topics:

• Advances in numerical simulation and experimental techniques for analyzing internal flows in marine hydraulic machinery.
• Insight into the complex flow patterns and turbulence characteristics within marine pumps, turbines, and other related equipment.
• Investigations into the influence of internal flow mechanisms on the performance, efficiency, and reliability of marine fluid machinery.
• Innovations in design optimization and material selection to enhance the internal flow characteristics and overall performance of marine fluid machinery.
• Studies on the interaction between internal flows and structural dynamics in marine fluid machinery, and its impact on operational stability and safety.
• Cross-disciplinary approaches that integrate fluid dynamics, mechanical engineering, and materials science to address challenges in marine fluid machinery design and operation.

By collecting and disseminating the latest research in these areas, we aim to foster a vibrant community of scholars and practitioners dedicated to pushing the boundaries of knowledge in marine fluid machinery. We look forward to receiving your contributions and fostering meaningful discussions on the internal flow mechanisms of modern marine fluid machinery.

You may choose our Joint Special Issue in Journal of Marine Science and Engineering.

Dr. Changliang Ye
Prof. Dr. Yuan Zheng
Dr. Kan Kan
Dr. Ran Tao
Dr. Huixiang Chen
Guest Editors

Manuscript Submission Information

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• design method
• optimizing strategy
• flow characteristics
• transient process
• cavitation
• erosion
• numerical method
• tidal energy
• wave energy
• marine hydrokinetics
• environmentally friendly