Hydraulic Performance and Energy Dissipation Mechanism Analysis of the Tesla-Shaped Emitter

Du, Peisen; Li, Zhiqin; Hao, Ruixia; Ma, Jun; Yan, Da

doi:10.3390/en16145375

Energies

2023

DOI: 10.3390/en16145375

|View full text |Cite

Hydraulic Performance and Energy Dissipation Mechanism Analysis of the Tesla-Shaped Emitter

Peisen Du

Zhiqin Li

Ruixia Hao

et al.

Abstract: In this paper, a tesla-shaped emitter is proposed based on the structure of the “tesla valve” as the source of inspiration, so that the water flow in the channel would produce a variety of energy dissipation phenomena, such as diversion, hedging, and mixing, to explore the hydraulic performance and energy dissipation mechanism of the tesla-shaped emitter. The channel structure parameters were taken as factors, and 16 groups of orthogonal tests were arranged. Based on CFD technology, the pressure–flow relations… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

The design and hydraulic performance studies of a Tesla valve‐type drip irrigation emitter

Xu,

Lin,

et al. 2024

Irrigation and Drainage

View full text Add to dashboard Cite

The Tesla valve‐type drip irrigation emitter is a novel type of drip irrigation emitter that allows one‐way fluid flow and sharp water flow diversion. Orthogonal test schemes were employed to analyse the impact of structural parameters and energy dissipation mechanisms on hydraulic performance. The effect of vortex partitioning in forward and reverse flow channels on hydraulic performance was analysed. A prediction model for the emitter discharge exponent (flow index) of the structural parameters was established. The results indicated that the emitter discharge exponents of forward‐Tesla valve‐type drip irrigation emitters (FTEs) ranged from 0.47 to 0.506, and those of reverse‐Tesla valve‐type drip irrigation emitters (RTEs) ranged from 0.51 to 0.533. There was a significant disparity in the distribution of vortex zones between the FTE and RTE. The local loss coefficients of the FTE were 2.12–10.84, and those of the RTE were 1.00–3.71. The channel width D had a substantial impact on the emitter discharge exponents of the FTE and RTE, whereas the inlet length of diverter K, the length of the bevelled edge of raindrop‐type diverter B and the opening angle of raindrop‐type diverter θ had relatively smaller effects on the emitter discharge exponent. The determination coefficients of the regression model for the FTE and RTE were 0.89 and 0.84, respectively. The relative errors between the simulated and estimated values were −4.57% to 1.21%, and the experimental and estimated values were −3.72% to −1.45% in the FTE. The relative errors between the simulated and estimated values were −0.98% to 2.86%, and the experimental and estimated values were −3.72% to 1.45% in the RTE. These relative errors were all under 5%, indicating that the estimation of the emitter discharge exponent can be more accurate.

show abstract

The design and hydraulic performance studies of a Tesla valve‐type drip irrigation emitter

Xu,

Lin,

et al. 2024

Irrigation and Drainage

View full text Add to dashboard Cite

show abstract

The Structural Optimization of Leaf Vein Drip Irrigation Emitter on Hydraulic Performance, Energy Entropy and Anti-Clogging Ability

Li,

Bao,

Cheng

et al. 2024

Agronomy

View full text Add to dashboard Cite

Leaf vein drip irrigation emitter is a new type of drip irrigation emitter. The flow channel achieves energy dissipation through flow diversion, turning, and sudden contraction. In this study, three design schemes (B1, B2, and B3) were proposed by optimizing the flow channel structure to improve the hydraulic performance, and the feasibility of the schemes was verified by combining them with experiments. The results show that the flow index of the three structural optimization designs were 0.52, 0.51, and 0.50, with errors of less than 5% compared to the measured results. Compared to the original structure A1 (with a flow index of 0.53), the hydraulic performance was improved by 0.4%, 3.2%, and 5.7%. Compared with A1 and B1, the turbulence kinetic energy of the main flow region of the B2 and B3 structures was significantly increased, and the proportion of low turbulence kinetic energy area had decreased. The increase in turbulent kinetic energy drove the liquid to remain turbulent, increasing the ability of particulate matter to flow out of the flow channel. The irregular changes in the velocity field in the high-speed zone result in a large velocity gradient, which maximizes the turbulent kinetic energy and entropy generation in the area. Among the four flow channel structures, the region with the highest turbulence dissipation was located in the upper part of the internal structure of the flow channel. There were apparent vortex regions in flow channels A1, B1, and B3 for energy dissipation, with energy dissipation coefficients being 6.07–8.51. However, the average flow velocity in this region was only about 0.2 m/s, and particulate matter was easily trapped. When the particle diameter increased, compared with the other three design structures, B2 had the best particle passage ability. Combined with the muddy water experiment, the optimized flow channel B2 anti-clogging performance improved by 30.8%. This study can provide a reference for further improving the hydraulic performance of drip irrigation emitters.

show abstract

Transient Flow Dynamics in Tesla Valve Configurations: Insights from Computational Fluid Dynamics Simulations

Zeidan,

Németh,

Abhijith

et al. 2024

Water

View full text Add to dashboard Cite

This study investigates the transient flow dynamics and pressure interactions within Tesla valve configurations through comprehensive CFD simulations. Tesla valves offer efficient passive fluid control without the need for external power, making them favorable in various applications. Previous observations indicated that Tesla valves effectively reduce the amplitude of pressure transients, prolonging their duration and distributing energy over an extended timeframe. While suggesting a potential role for Tesla valves as pressure dampers during transient events, the specific mechanisms behind this behavior remain unexplored. This research focuses on elucidating the internal dynamics of Tesla valves during transient events, aiming to unravel the processes responsible for the observed attenuation in pressure transients. This study reveals the emergence of “pressure pockets” within Tesla valves, deviating from conventional uniform pressure fronts. These pockets manifest as discrete chambers with varying lengths and volumes, contributing to the non-uniform propagation of pressure throughout the system. This investigation employs advanced CFD simulations as a crucial tool to unravel the governing dynamics of transient flow within Tesla valve configurations. By elucidating underlying fluid dynamics, this study lays the groundwork for future Tesla valve design optimization, holding potential implications for applications where the control of transient flow events is crucial.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Hydraulic Performance and Energy Dissipation Mechanism Analysis of the Tesla-Shaped Emitter

Cited by 3 publications

References 23 publications

The design and hydraulic performance studies of a Tesla valve‐type drip irrigation emitter

The design and hydraulic performance studies of a Tesla valve‐type drip irrigation emitter

The Structural Optimization of Leaf Vein Drip Irrigation Emitter on Hydraulic Performance, Energy Entropy and Anti-Clogging Ability

Transient Flow Dynamics in Tesla Valve Configurations: Insights from Computational Fluid Dynamics Simulations

Contact Info

Product

Resources

About