Associate Professor Dong Lin fromthe School of Mechanical and Automotive Engineering at Shanghai University of EngineeringScience has joined forces with Professor Rinoshika Akira from YamagataUniversity, Japan, to publish a groundbreaking research paper titled“Tomographic Particle Image Velocimetry Measurement on Three-DimensionalSwirling Flow in Dual-Stage Counter-Rotating Swirler.” Their findings werepublished in the prestigious Chinese Journal of Aeronautics (CJA), which isclassified as a high-ranking journal in the field, falling within the JCR Q-1.
The study investigates the complexthree-dimensional (3D) swirling flow structures generated by a counter-rotatingdual-stage swirler within a confined chamber, utilizing advanced experimentaltechniques such as Tomographic Particle Image Velocimetry (Tomo-PIV) and planarParticle Image Velocimetry (PIV). The experiments were conducted at a Reynoldsnumber of 2.3 x 10^5, and the research revealed critical insights into variousrecirculation zones including the Corner Recirculation Zone (CRZ), CentralRecirculation Zone (CTRZ), and Lip Recirculation Zone (LRZ).
Fig.1 Measurementmethods:Tomo-PIVsetup
Fig.2 3DreconstructionoflowerorderPODmodeforTomo-PIVusingiso-surfacesofQ=0.15s-1(red)
andVx/U=0(blue).
The findings indicate that thecounter-rotating dual-stage swirler leads to a complex vortex breakdown processthat enhances the understanding of fluid dynamics within confined spaces. Keyobservations from the study include the dynamic interactions among thedifferent recirculation zones, the influence of confinement on flow structure,and the identification of coherent flow patterns such as explosive breakup andprecessing vortex cores,Fig.2.
The Chinese Journal of Aeronautics,published under the auspices of the Chinese Society of Aeronautics andAstronautics and Beihang University, is recognized as a leading internationaljournal dedicated to aerospace engineering. It serves as an important platformfor disseminating cutting-edge research and technological advancements acrossvarious disciplines within aeronautics and astronautics. The journal’scommitment to open access and rigorous peer review ensures that research isdisseminated promptly and reaches a global audience.
The collaborative research effortbetween Shanghai University of Engineering Science and Yamagata Universityhighlights the importance of international partnerships in advancing scientificknowledge and technological innovation. Associate Professor Dong Lin emphasizedthat this collaboration not only enriches the research landscape at the Schoolof Mechanical and Automotive Engineering but also enhances its internationalinfluence in academia.
Furthermore, this successfulpartnership is expected to pave the way for future joint research initiatives,fostering a culture of shared knowledge and innovation between the twoinstitutions. As globalization continues to shape the landscape of highereducation and research, such collaborations are essential in driving forwardthe boundaries of science and technology.
