دورية أكاديمية
Analysis of bulb turbine hydrofoil cavitation
| العنوان: | Analysis of bulb turbine hydrofoil cavitation |
|---|---|
| المؤلفون: | Podnar, Andrej, Hočevar, Marko, Novak, Lovrenc, Dular, Matevž |
| المصدر: | Applied sciences, vol. 11, no. 6, pp. 1-18, 2021. ; ISSN: 2076-3417 |
| بيانات النشر: | MDPI |
| سنة النشر: | 2021 |
| المجموعة: | University of Ljubljana: Repository (RUJ) / Repozitorij Univerze v Ljubljani |
| مصطلحات موضوعية: | hydrofoil, bulb turbine, bulb turbine runner, cavitation, flow visualization, cavitation tunnel, regression model, hidrodinamski profil, cevna turbina s hruško, kavitacija, vizualizacija toka, kavitacijski model, regresijski model, info:eu-repo/classification/udc/519.8:532.528(045) |
| الوصف: | The influence of a bulb runner blade hydrofoil shape on flow characteristics around the blade was studied. Experimental work was performed on a bulb turbine measuring station and a single hydrofoil in a cavitating tunnel. In the cavitation tunnel, flow visualization was performed on the hydrofoil's suction side. Cavitation structures were observed for several cavitation numbers. Cavitation was less intense on the modified hydrofoil than on the original hydrofoil, delaying the cavitation onset by several tenths in cavitation number. The results of the visualization in the cavitation tunnel show that modifying the existing hydrofoil design parameters played a key role in reducing the cavitation inception and development, as well as the size of the cavitation structures. A regression model was produced for cavitation cloud length. The results of the regression model show that cavitation length is dependent on Reynolds's number and the cavitation number. The coefficients of determination for both the existing and modified hydrofoils were reasonably high, with R2 values above 0.95. The results of the cavitation length regression model also confirm that the modified hydrofoil exhibits improved the cavitation properties. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf; text/url |
| اللغة: | English |
| العلاقة: | info:eu-repo/grantAgreement/ARRS//P2-0401; https://repozitorij.uni-lj.si/IzpisGradiva.php?id=125678Test; https://repozitorij.uni-lj.si/Dokument.php?id=141509&dnTest=; https://repozitorij.uni-lj.si/Dokument.php?id=141508&dnTest=; https://plus.si.cobiss.net/opac7/bib/56988419?lang=slTest |
| الإتاحة: | https://doi.org/10.3390/app11062639Test https://repozitorij.uni-lj.si/IzpisGradiva.php?id=125678Test https://repozitorij.uni-lj.si/Dokument.php?id=141509&dnTest= https://repozitorij.uni-lj.si/Dokument.php?id=141508&dnTest= https://plus.si.cobiss.net/opac7/bib/56988419?lang=slTest |
| حقوق: | http://creativecommons.org/licenses/by/4.0Test/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.FC22B5EF |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |