Intensity recognition of vortex ropes in draft tube of a prototype pump turbine using an optimized CNN-BiLSTM framework with multi-head self-attention mechanism

X Zheng, C Yang, L Zeng, Y He, Y Tian, Y Zhang… - Journal of Energy …, 2025 - Elsevier
Swirling vortex rope in draft tube (DT) is a typical hydraulic instability of a pump turbine (PT)
in the pumped storage plant (PSP). In view of the potential hazards of the vortex rope …

Mitigation of high load flow instabilities using axial water jet injection in Francis turbines

S Khullar, KM Singh, BK Gandhi - IOP Conference Series: Earth …, 2024 - iopscience.iop.org
The high load (HL) operations in Francis turbines lead to the inception of unsteady
phenomena causing pressure pulsations, vibrations, and cavitation. The flow instabilities at …

Influence of labyrinth clearance on the hydrodynamic performance of a high head Francis turbine

MM Kamal, L Devinar, A Abbas - IOP Conference Series: Earth …, 2024 - iopscience.iop.org
Francis turbines have a leakage loss from the corresponding labyrinth seals ie, crown side
and a skirt side labyrinth clearance. Therefore, the labyrinth clearance between the runner …

TURBINE INVESTIGASI MODEL NUMERIK TURBIN REAKSI VORTEX ULTRA-LOW HEAD DENGAN MEMVARIASIKAN JUMLAH GRID DAN METODE PEMECAHAN …

M Safi'i, N Sinaga, MS Amin - Device, 2024 - ojs.unsiq.ac.id
Penggunaan energi fosil yang berlebihan menyebabkan berkurangnya sumber daya
energi, memicu pemanasan global, efek rumah kaca dan polusi udara sehingga energi …