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Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application

The Gravitational Water Vortex Turbine is a new and underdeveloped micro hydro system. Thus, this field still not fully explored and many design and parameters need to study. It brings the efficiency of the vortex turbine still very low which is below than 40%. There are a lot of factors that able t...

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Main Author: Ronaldo Ulisi
Format: Academic Exercise
Language:English
English
Published: 2022
Subjects:
TK1-9971 Electrical engineering. Electronics. Nuclear engineering
Online Access:https://eprints.ums.edu.my/id/eprint/34312/1/24PAGES.pdf
https://eprints.ums.edu.my/id/eprint/34312/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/34312/
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spelling my.ums.eprints.343122022-09-30T02:29:14Z https://eprints.ums.edu.my/id/eprint/34312/ Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application Ronaldo Ulisi TK1-9971 Electrical engineering. Electronics. Nuclear engineering The Gravitational Water Vortex Turbine is a new and underdeveloped micro hydro system. Thus, this field still not fully explored and many design and parameters need to study. It brings the efficiency of the vortex turbine still very low which is below than 40%. There are a lot of factors that able to influence the efficiency of vortex turbine performance such as the design of basin and inlet configuration of basin. This study is focused on Computational Fluid Dynamics (CFD) analysis of water vortex formation and hydrodynamic flow characteristic. For more specific, this study focusses to compare and analyse the vortex formation and its hydrodynamic characteristic with respect to the performance. There are two different configurations were developed which are no wrap-around inlet and wrap-around inlet. Aside that, three models of wrap-around inlet with radius curvature of 0.27 m, 0.28 m and 0.30 m were developed for the optimization purpose. These models were designed using Solidwork and simulated using Ansys CFX. The experimental work also done for validation purpose. The percentage difference between the experimental and simulation is 7.94%, which is modest enough to demonstrate that the simulation setting usable. In the result, it is focused on the water streamline, vortex profile, water velocity and optimization. Based on the findings, the wrap-around inlet computed higher and symmetric vortex formation, unform and high magnitude of velocity and the streamline also distributed well compared to no-wrap around inlet model. While for the optimize model, wrap-around with 0.27 m radius of curvature was the most efficient among the tested models. With the same reasons, it can create a high velocity with symmetrical vortex. 2022 Academic Exercise NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/34312/1/24PAGES.pdf text en https://eprints.ums.edu.my/id/eprint/34312/2/FULLTEXT.pdf Ronaldo Ulisi (2022) Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application. Universiti Malaysia Sabah. (Unpublished)
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TK1-9971 Electrical engineering. Electronics. Nuclear engineering
spellingShingle TK1-9971 Electrical engineering. Electronics. Nuclear engineering
Ronaldo Ulisi
Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
description The Gravitational Water Vortex Turbine is a new and underdeveloped micro hydro system. Thus, this field still not fully explored and many design and parameters need to study. It brings the efficiency of the vortex turbine still very low which is below than 40%. There are a lot of factors that able to influence the efficiency of vortex turbine performance such as the design of basin and inlet configuration of basin. This study is focused on Computational Fluid Dynamics (CFD) analysis of water vortex formation and hydrodynamic flow characteristic. For more specific, this study focusses to compare and analyse the vortex formation and its hydrodynamic characteristic with respect to the performance. There are two different configurations were developed which are no wrap-around inlet and wrap-around inlet. Aside that, three models of wrap-around inlet with radius curvature of 0.27 m, 0.28 m and 0.30 m were developed for the optimization purpose. These models were designed using Solidwork and simulated using Ansys CFX. The experimental work also done for validation purpose. The percentage difference between the experimental and simulation is 7.94%, which is modest enough to demonstrate that the simulation setting usable. In the result, it is focused on the water streamline, vortex profile, water velocity and optimization. Based on the findings, the wrap-around inlet computed higher and symmetric vortex formation, unform and high magnitude of velocity and the streamline also distributed well compared to no-wrap around inlet model. While for the optimize model, wrap-around with 0.27 m radius of curvature was the most efficient among the tested models. With the same reasons, it can create a high velocity with symmetrical vortex.
format Academic Exercise
author Ronaldo Ulisi
author_facet Ronaldo Ulisi
author_sort Ronaldo Ulisi
title Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
title_short Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
title_full Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
title_fullStr Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
title_full_unstemmed Modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
title_sort modelling and analysis on the effect of wrap-around inlet channel to vortex flow for micro hydro application
publishDate 2022
url https://eprints.ums.edu.my/id/eprint/34312/1/24PAGES.pdf
https://eprints.ums.edu.my/id/eprint/34312/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/34312/
_version_ 1760231278425145344
score 13.211869

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