Djordje Cantrak

Editorial: Special issue: ‘Mathematical methods and numerical simulations in engineering mechanics’

Ivana D. Atanasovska, Jelena Svorcan, Djordje Cantrak

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Quantitative analysis of energy dissipation mechanisms and vortex evolution in an axial flow pump-as-turbine based on energy loss mechanism and mode decomposition

Wenjie Peng, Wenjie Wang, Ji Pei, Shouqi Yuan et autres

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Coordinated improvement of energy performance and reliability in large centrifugal pumps: An interdisciplinary optimization approach

Zhenhua Han, Ji Pei, Wenjie Wang, Zongshuai Liu et autres

Numerical study on the influence of variable-speed operation on flow stability during the load rejection process of Francis turbines

Shan Liu, Wenjie Wang, Ji Pei, Qin Sun et autres

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Optimizing cavitation performance of a centrifugal pump: A hybrid approach of combining Random Forest and feature selection

Kuilin Wang, Ji Pei, Wenjie Wang, Shouqi Yuan et autres

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Transient simulation on internal flow characteristics and pressure pulsation of variable speed Francis turbines during acceleration process

Wenjie Wang, Ji Pei, Long Meng, J Chen et autres

Variable-speed Francis turbines offer the advantages of a broader operational range and enhanced stability. To investigate the internal flow dynamics and pressure pulsation characteristics during the variable-speed operation of the Francis-99 turbine, this paper employs numerical simulations to examine the internal pressure, …

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Unsteady fluid–structure interaction characteristics of a reversible mixed-flow pump in micro-pumped hydro storage

Ji Pei, Wenjie Wang, Xingcheng Gan, Djordje Cantrak

The reversible mixed-flow pump (RMFP) is widely employed in micro-pumped hydro storage to efficiently meet the energy storage and generation demands of microgrids. However, frequent switching between operational conditions intensifies the fluid–structure interaction effects in RMFP, leading to operational instability and blade …

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Experimental and Numerical Research on Swirl Flow in Straight Conical Diffuser

Dejan B. Ilić, Jelena Svorcan, Djordje Cantrak, Novica Z. Janković

The main objective of the current study is a detailed (both numerical and experimental) investigation of the highly unsteady and complex swirl flow in a straight conical diffuser (with a total divergence angle of 8.6°) generated by an axial fan impeller. Pressure, …

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Application of a Modified Adaptive Swarm Intelligence and Machine Learning in Real-Time Energy-Efficient Control of a Parallel Pump System

Xingcheng Gan, Xiaobo Gong, Ji Pei, Wenjie Wang et autres

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Transient modeling of impinging heat transfer from an acoustically modulated turbulent air jet to a normally positioned flat surface

Dejan B. Cvetinovic, Nikola Ćetenović, Aleksandar M. Erić, Jovana Andjelković et autres

The subject of this study is the numerical investigation of the impingement of an axisymmetric turbulent air jet on a flat surface, the influence of acoustic modulations on the coherent structures that form around the jet, and the effects on the heat …

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MEHANIZAM ZA KALIBRACIJU SONDE SA VIŠE RUPICA ZA MERENjE PROSTORNOG POLJA BRZINA I PRITISKA U VENTILACIONIM SISTEMIMA

Milan Bulajić, Novica Z. Janković, Djordje Cantrak

Three-dimensional numerical investigation of fluidized bed gasification in a pilot plant gasifier: Fluid flow

Nikola Ćetenović, Dejan B. Cvetinovic, Djordje Cantrak

Fluidized bed combustion offers key advantages such as high efficiency, environmental friendliness, fuel flexibility, and load adaptability, making it suitable for various applications such as power generation, biomass gasification, and petrochemical processing. This study presents a numerical investigation of the gasification processes …