Advances in Fluid Machinery and Fluid Mechanics for Deep-Sea Resource Extraction and Exploitation

Submission Deadline: 31 December 2025 View: 485 Submit to Special Issue

Guest Editors

Assoc. Prof. Dr. Leilei Ji

Email: leileiji@ujs.edu.cn

Affiliation: Research Center of Fluid Machinery Engineering and Technology, Jiangsu university, Zhenjiang, 212013, China

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Research Interests: computational fluid dynamics (CFD), fluid machinery, unsteady flow, hydraulic machinery, cavitation, multiphase flow, optimization of pump

Assoc. Prof. Dr. Bin Xu

Email: norkistar@ujs.edu.cn

Affiliation: Research Center of Fluid Machinery Engineering and Technology, Jiangsu university, Zhenjiang, 212013, China

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Research Interests: computational fluid dynamics, multiphase flow, cavitation

Dr. Yang Yang

Email: yang_yang@yzu.edu.cn

Affiliation: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou, 225009, China

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Research Interests: pump optimization design, internal flow instability in rotating machinery, multiphase flow

Prof. Dr. Ramesh Agarwal

Email: rka@wustl.edu

Affiliation: Washington University in St. Louis, St. Louis, 63130, USA

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Research Interests: computational fluid dynamics (CFD), computational magnetohydrodynamics (MHD), electromagnetics, computational aeroacoustics, multidisciplinary design and optimization, rarefied gas dynamics and hypersonic flows, bio-fluid dynamics, flow and flight control

Summary

The sustainable and efficient extraction of ocean resources is intricately linked to advancements in fluid machinery and the fundamental principles of fluid mechanics. Deep-sea resource extraction involves highly complex and dynamic flow conditions that pose significant engineering challenges. During typical operations, a wide range of intricate flow phenomena can arise, including flow instabilities, fluid-structure interactions leading to coupling vibrations, cavitation, and multiphase flow behavior. These effects not only impact the operational stability of fluid machinery but also contribute to efficiency losses, structural wear, and increased energy consumption.

Understanding and mitigating these challenges require a comprehensive analysis of the underlying fluid dynamics governing deep-sea extraction processes. Investigating the interaction between turbulent flow, multiphase transport, and mechanical components in extreme subsea environments is crucial for optimizing system performance. Moreover, deep-sea conditions—characterized by high pressures, low temperatures, and variable salinity—further complicate fluid behavior, necessitating advanced modeling techniques, experimental validation, and novel engineering solutions.

This special issue invites cutting-edge research that enhances our understanding of fluid machinery and fluid mechanics in the context of deep-sea resource development. Topics of interest include, but are not limited to:

· Flow Instabilities and Control Strategies: Investigations into turbulence, vortex shedding, and unsteady flow behavior affecting the performance and reliability of pumps, turbines, and compressors in deep-sea applications.

· Fluid-Structure Interaction and Vibration Analysis: Studies on the coupling effects between fluid forces and mechanical structures, including strategies to mitigate resonance, fatigue, and vibration-induced failure.

· Multiphase Flow Dynamics: Experimental and numerical studies on gas-liquid, solid-liquid, and gas-solid-liquid interactions in extraction systems, addressing issues such as phase separation efficiency and cavitation.

· Energy Conversion and Efficiency Optimization: Innovative approaches to improving energy utilization in fluid machinery operating under extreme subsea conditions, including novel impeller designs, energy recovery techniques, and adaptive control systems.

· High-Pressure and Extreme Environment Fluid Behavior: Exploration of how deep-sea conditions alter conventional fluid dynamics, requiring modifications to classical theories and the development of new predictive models.

· Computational and Experimental Approaches: Advanced numerical simulations (CFD, multiphysics modeling) and experimental techniques for analyzing fluid behavior in deep-sea systems, including scaled testing and real-time monitoring.

By addressing these challenges, this special issue aims to provide a robust theoretical foundation and practical engineering insights that will contribute to the development of more reliable, efficient, and sustainable deep-sea resource extraction technologies. We invite contributions from academia, industry, and research institutions to advance the state of knowledge in this critical field.

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