000015020 001__ 15020
000015020 005__ 20241118133159.0
000015020 022__ $$a2767-8490
000015020 0247_ $$2DOI$$a10.1080/27678490.2023.2290025
000015020 037__ $$aARTICLE
000015020 039_9 $$a2024-11-18 13:31:59$$b0$$c2024-11-18 11:28:43$$d1001044$$c2024-11-15 11:28:04$$d0$$y2024-11-15 11:27:55$$z1000099
000015020 041__ $$aeng
000015020 245__ $$aComputation fluid dynamics investigation of the flow in junctions :$$bapplication to hydraulic short circuit operating mode
000015020 260__ $$aAbingdon-ont Thames, UK$$bTaylor & Francis
000015020 269__ $$a2024-01
000015020 300__ $$a16 p.
000015020 506__ $$avisible
000015020 520__ $$9eng$$aDue to the penetration of stochastic low-carbon sources of production, requirements for flexible generation increase. The flexibility of pumped storage hydropower plants in pump mode can be improved by implementing hydraulic short circuit modes, which consists in operating the turbine(s) and the pump(s) in parallel. This new operating mode can be investigated by computational fluid dynamics to determine the head losses and to investigate the flow topology. Nine geometries of the Grand’Maison and Forces Motrices Hongrin-Léman (FMHL/FMHL+) plants are considered. Due to the lack of measurements, simulations are performed using different turbulence models and meshes to assess the uncertainty of the results. A statistical analysis of the results shows that low values of the head loss coefficients are obtained for geometries that limit the impingement of the flow on the walls and the development of a swirling flow downstream. Such geometries have the benefit of also limiting the wall pressure fluctuations and wall shear stresses, i.e. the risk of cavitation and the abrasion of the pipe walls due to sediment transport. These new results for the hydropower community are valuable for owners in implementing hydraulic short circuit mode in existing power plants or in designing new suitable junctions.
000015020 540__ $$aincorrect
000015020 592__ $$aHEI-VS
000015020 592__ $$bInstitut Énergie et environnement
000015020 592__ $$cIngénierie et Architecture
000015020 6531_ $$9eng$$aCFD
000015020 6531_ $$9eng$$aRANS
000015020 6531_ $$9eng$$ahydraulic short-circuit
000015020 6531_ $$9eng$$aAnsys® Fluent®
000015020 6531_ $$9eng$$aAnsys® CFX®
000015020 6531_ $$9eng$$aOpenFOAM
000015020 655__ $$ascientifique
000015020 700__ $$aDecaix, Jean$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015020 700__ $$aMertille, Mathieu$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015020 700__ $$aDrommi, Jean-Louis$$uEDF CIH DT, Chambéry, France
000015020 700__ $$aHugo, Nicolas$$uAlpiq, Lausanne, Switzerland
000015020 700__ $$aMünch-Alligné, Cécile$$uSchool of Engineering, HES-SO Valais-Wallis, HEI, HES-SO University of Applied Sciences and Arts Western Switzerland
000015020 773__ $$tLHB$$j2023, 109$$k1$$q2290025
000015020 8564_ $$uhttps://arodes.hes-so.ch/record/15020/files/Decaix_2024_computation_fluid_dynamics_investigation_flow_junctions.pdf$$yPublished version$$93d5152d5-6a78-4a51-808d-47134bf32d96$$s8295640
000015020 906__ $$aGOLD
000015020 909CO $$ooai:hesso.tind.io:15020$$pGLOBAL_SET
000015020 950__ $$aaucun
000015020 980__ $$ascientifique
000015020 981__ $$ascientifique