{"title":"Identifying and mitigating energy losses in Tesla turbines: A study on CFD optimization","authors":"Yovany Galindo, José Núñez, Alberto Beltrán","doi":"10.1002/ese3.1863","DOIUrl":null,"url":null,"abstract":"<p>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 <span></span><math>\n <semantics>\n <mrow>\n \n <mrow>\n <mn>88</mn>\n \n <mo>%</mo>\n </mrow>\n </mrow>\n <annotation> <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></annotation>\n </semantics></math> to <span></span><math>\n <semantics>\n <mrow>\n \n <mrow>\n <mn>64</mn>\n \n <mo>%</mo>\n </mrow>\n </mrow>\n <annotation> <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></annotation>\n </semantics></math> of the total energy. Energy losses due to leaks between the rotor and the casing were also quantified, ranging from <span></span><math>\n <semantics>\n <mrow>\n \n <mrow>\n <mn>4.97</mn>\n \n <mo>%</mo>\n </mrow>\n </mrow>\n <annotation> <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></annotation>\n </semantics></math> to <span></span><math>\n <semantics>\n <mrow>\n \n <mrow>\n <mn>7.95</mn>\n \n <mo>%</mo>\n </mrow>\n </mrow>\n <annotation> <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></annotation>\n </semantics></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.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.1863","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Science & Engineering","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ese3.1863","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
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 to of the total energy. Energy losses due to leaks between the rotor and the casing were also quantified, ranging from to 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.
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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