Effects of different block designs on the performance of inline cross-flow turbines in urban water mains

Du, Jianjun; Shen, Zhicheng; Yang, Hongxing

doi:10.1016/j.apenergy.2018.06.079

Cited by 26 publications

(10 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The main objective of H-Darireus turbine is decrease the negative torque of the incoming blade [22][23][24] in GVT case, the flow is rotational inside the chamber. The discretization of volume control was carried out in Ansys ICEM® modules for having higher quality metrics in the meshes [25], supervising as a significant dimension the minimum orthogonal quality, which varies between zero and one, being one the value is associated with the best quality of the mesh [26][27][28] the aspect ratio and the minimum determinant 3x3. For the camera and rotor, 34 blocks were made, 18 and 16, respectively.…”

Section: Methodsmentioning

confidence: 99%

Numerical Study of H-Darrieus Turbine as a Rotor for Gravitational Vortex Turbine

Rio

Sánchez

Villa

et al. 2022

CFDL

View full text Add to dashboard Cite

The main objetive of this study is to compare numerically the torque generated at 50, 75, 100, and 125 rpm by H-Darrieus turbine as a rotor for Gravitational Vortex Turbine. The rotational flow into the gravitational vortex turbine tank helped to decrease the negative torque in H-Darrieus rotor. The study was developed in ANSYS® CFX, where the model was configured at constant operating conditions. The highest torque was 0.117 Nm at 50 rpm, and the torque decreased with increasing rpm. The H-Darrieus works with increasing lift force, however, the rotor inside the Gravitational Vortex Turbine interacts with drag force.

show abstract

Section: Methodsmentioning

confidence: 99%

Numerical Study of H-Darrieus Turbine as a Rotor for Gravitational Vortex Turbine

Rio

Sánchez

Villa

et al. 2022

CFDL

View full text Add to dashboard Cite

show abstract

“…The elements inside the GVT correspond to the fluid inside the tank, as shown in Figure 5a. The mesh was made in this module because it obtains high metrics in mesh quality and reduces the computational time (Du et al, 2018). Table 2 shows the mesh metrics for conical and cylindrical outlet designs.…”

Section: Discretization Process and Boundary Conditionsmentioning

confidence: 99%

Numerical Study and Theoretical Comparison of Outlet Hole Geometry for a Gravitational Vortex Turbine

Sánchez

Rio

Pujol

2021

Indonesian J. Sci. Technol

View full text Add to dashboard Cite

The gravitational water vortex turbine is an alternative to renewable energies, it transforms the hydrokinetic energy of the rivers into electric energy and it does not require a reservoir. According to studies carried out, the hydraulic efficiency can increase or decrease according to the turbine geometrical configuration. This paper presents a numerical (CFD) and analytical comparison between conical and cylindrical designs for the outlet. The results show a higher performance for conical geometry than the cylindrical tank. The fluid behavior in CFD and analytical studies presents a tangential velocity increase near to air core and outlet hole (similar behavior). The maximum theoretical power generated was 167 W and 150 W for conical and cylindrical design respectively. The differences between geometries of the outlet holes using CFD and analytical models were 11 and 7%, respectively. However, the closest results to the CFD model had different values of 31 and 29% for conical and cylindrical design, respectively. The furthest result regarding the CFD study was 55%. The principal difference is due to tank geometry, the change in discharge zone, as well as the ratio of diameter tank and outlet hole can increase or decrease the tangential velocity and make a stronger and more stable vortex formation. The theoretical power generated is a good parameter to select the height to place the rotor.

show abstract

“…En investigaciones realizadas por Jiyun et al (2018), fueron propuestos modelos de bloques para alojar toda la estructura de una turbina Michell-Banki, al interior de tubos principales de una red de distribución, como se observa en la figura 20. El objetivo de la investigación consistió en proponer un modelo de turbina que se encontrara embebido en la tubería y que a su vez supliese la demanda energética de los sistemas electrónicos usados para supervisar las fugas en el circuito de agua potable de la ciudad de Hong Kong [58]. En una investigación complementaria Jiyun et al (2019), analizaron el efecto en el desempeño de la turbina de los ángulos de salida en los álabes mediante simulación numérica, estableciendo valores entre 26° y 32°, con variaciones cada 2°.…”

Section: A)unclassified

Consideraciones de diseño de una turbina Michell-Banki

Romero¹,

Velásquez²,

Chica³

2020

revuin

View full text Add to dashboard Cite

Las turbinas Michell-Banki, también conocidas como turbinas de flujo cruzado, son maquinas hidráulicas utilizadaspara la producción y generación de energía en proyectos hidroeléctricos a pequeña escala. Desde su creación, la turbinade Michell-Banki ha sido objeto de múltiples investigaciones enfocadas a mejorar la eficiencia a fin de obtener elmáximo aprovechamiento del recurso hidraúlico disponible. En este trabajo se exponen las características principalesde la turbina, sus componentes y su principio de funcionamiento. Posteriormente se hace una descripción de lasinvestigaciones y aportes de mayor relevancia de cada estudio. Luego se hace un análisis del uso y aplicación de laturbina Michell-Banki y las oportunidades de aprovechamiento en el territorio colombiano con el objetivo de proveerel recurso energético a zonas que carecen del servicio y que cuentan con el recurso hídrico. Finalmente se describenlas consideraciones más importantes a tener en cuenta para el diseño de este tipo de turbinas

show abstract

Effects of different block designs on the performance of inline cross-flow turbines in urban water mains

Cited by 26 publications

References 24 publications

Numerical Study of H-Darrieus Turbine as a Rotor for Gravitational Vortex Turbine

Numerical Study of H-Darrieus Turbine as a Rotor for Gravitational Vortex Turbine

Numerical Study and Theoretical Comparison of Outlet Hole Geometry for a Gravitational Vortex Turbine

Consideraciones de diseño de una turbina Michell-Banki

Contact Info

Product

Resources

About