Identifying and mitigating energy losses in Tesla turbines: A study on CFD optimization

IF 3.5 3区 工程技术 Q3 ENERGY & FUELS Energy Science & Engineering Pub Date : 2024-09-19 DOI:10.1002/ese3.1863
Yovany Galindo, José Núñez, Alberto Beltrán
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Abstract

This study investigates the flow dynamics and energy losses of Tesla turbines using Computational Fluid Dynamics with OpenFOAM. Our goal is to identify the main sources of energy loss. Four main sources of energy loss were identified. The most significant loss occurred during the conversion of pressure energy to kinetic energy, estimated to range from 88 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0001" wiley:location="equation/ese31863-math-0001.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>88</mn><mo>%</mo></mrow></mrow></math> to 64 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0002" wiley:location="equation/ese31863-math-0002.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>64</mn><mo>%</mo></mrow></mrow></math> of the total energy. Energy losses due to leaks between the rotor and the casing were also quantified, ranging from 4.97 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0003" wiley:location="equation/ese31863-math-0003.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>4.97</mn><mo>%</mo></mrow></mrow></math> to 7.95 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0004" wiley:location="equation/ese31863-math-0004.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>7.95</mn><mo>%</mo></mrow></mrow></math> of the kinetic energy at peak efficiency points. Design modifications, such as incorporating a nozzle at the entrance of the turbine, can improve efficiency. These findings highlight specific areas for efficiency improvement, offering opportunities for improved turbine design and integration into energy-generation systems.

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识别和减少特斯拉涡轮机的能量损失:CFD 优化研究
本研究利用 OpenFOAM 计算流体力学研究了特斯拉涡轮机的流动动力学和能量损失。我们的目标是确定能量损失的主要来源。研究确定了能量损失的四个主要来源。最主要的损失发生在压力能转换为动能的过程中,估计损失范围为 88 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0001" wiley:location="equation/ese31863-math-0001.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>88</mn><mo>%</mo></mrow></mrow></math> to 64 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0002" wiley:location="equation/ese31863-math-0002.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>64</mn><mo>%</mo></mrow></mrow></math> 占总能量的比例。转子和机壳之间的泄漏造成的能量损失也被量化,范围从 4.97 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0003" wiley:location="equation/ese31863-math-0003.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>4.97</mn><mo>%</mo></mrow></mrow></math> to 7.95 % <math altimg="urn:x-wiley:20500505:media:ese31863:ese31863-math-0004" wiley:location="equation/ese31863-math-0004.png" display="inline" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mrow><mn>7.95</mn><mo>%</mo></mrow></mrow></math> 峰值效率点的动能。修改设计,例如在涡轮机入口处安装喷嘴,可以提高效率。这些发现突出了提高效率的具体领域,为改进涡轮机设计和将其集成到能源发电系统中提供了机会。
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来源期刊
Energy Science & Engineering
Energy Science & Engineering Engineering-Safety, Risk, Reliability and Quality
CiteScore
6.80
自引率
7.90%
发文量
298
审稿时长
11 weeks
期刊介绍: Energy Science & Engineering is a peer reviewed, open access journal dedicated to fundamental and applied research on energy and supply and use. Published as a co-operative venture of Wiley and SCI (Society of Chemical Industry), the journal offers authors a fast route to publication and the ability to share their research with the widest possible audience of scientists, professionals and other interested people across the globe. Securing an affordable and low carbon energy supply is a critical challenge of the 21st century and the solutions will require collaboration between scientists and engineers worldwide. This new journal aims to facilitate collaboration and spark innovation in energy research and development. Due to the importance of this topic to society and economic development the journal will give priority to quality research papers that are accessible to a broad readership and discuss sustainable, state-of-the art approaches to shaping the future of energy. This multidisciplinary journal will appeal to all researchers and professionals working in any area of energy in academia, industry or government, including scientists, engineers, consultants, policy-makers, government officials, economists and corporate organisations.
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