Unsteady Flow Phenomena in Fluid Machinery Systems
A special issue of Machines (ISSN 2075-1702). This special issue belongs to the section "Turbomachinery".
Deadline for manuscript submissions: 31 May 2026 | Viewed by 454
Special Issue Editors
Interests: turbulence; fluid mechanics; fluid machinery; fluid–structure interaction; renewable energy
Special Issues, Collections and Topics in MDPI journals
Interests: multiphase flow; fluid machinery; cavitation
Special Issues, Collections and Topics in MDPI journals
Interests: multiphase flow; fluid–structure interaction; fluid machinery; pump turbine
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Fluid machinery, serving as critical equipment in sectors such as energy, power, chemical processing, and aerospace, directly influences the technological level of major national projects and industrial systems. Within these machines, the presence of highly complex three-dimensional and unsteady turbulent flows represents a fundamental physical phenomenon that limits further improvements in performance and reliability.
Complex turbulent structures within blade passages—such as flow separation, vortex breakdown, secondary flows, and their interactions with wall-bounded boundary layers—are identified as root causes of hydraulic efficiency loss, broad-band vibration, and aerodynamic noise. Furthermore, under challenging operational conditions involving cavitation, particulate matter, multiphase media, or intense heat transfer, the strong coupling between turbulence and other physical phenomena results in highly nonlinear flow characteristics, posing significant threats to operational stability and component service life. Off-design, transient, and extreme operating conditions exacerbate turbulence-induced fluid–structure interaction vibrations, presenting major difficulties in design. With rapid advances in high-performance computing, refined flow measurement techniques, and data science methodologies, new opportunities are emerging for elucidating and controlling turbulent flows in fluid machinery. The integration of Large Eddy Simulation (LES), data-driven modeling, and advanced experimental diagnostics is expected to enable a deeper understanding and accurate prediction of these complex flows, thereby providing a scientific basis for the design of a new generation of highly efficient, low-noise, and reliable fluid machinery.
This Special Issue is dedicated to the topic of turbulence in fluid machinery and aims to collect the latest research achievements in this field. Original contributions are cordially invited from scholars on related fundamental theories, numerical simulations, experimental investigations, and innovative applications. Submissions addressing novel theories, methodologies, and technologies aimed at enhancing the performance and reliability of fluid machinery are particularly encouraged.
Prof. Dr. Zhengwei Wang
Dr. Yonggang Lu
Dr. Yongyao Luo
Dr. Hao Chang
Guest Editors
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Machines is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
Keywords
- fluid machinery
- turbulence
- vortex dynamics
- multiphase flow
- fluid–structure interaction
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