| dc.description.abstract | Micro-hydropower can be used to meet the needs of both isolated and rural com munities for electricity. Due to its inexpensive initial investment, simple design,
easy maintenance and low-head utilisation, the gravitational water vortex power
plant (GWVPP) has recently piqued interest. The findings of numerical work
employing a numerical simulation and analytical approach for the GWVPP are
presented in this study. To understand the influence of each on the efficiency of
GWVPP, four parameters (speed, hub-blade angle, number of blades and run ner profile) were explored. Design-Expert software was used to investigate the
interplay of each parameter/factor in order to maximise the contribution of each.
Design-Optimal Expert's (custom) design tool was used to construct twenty-four
experimental runs. To calculate the system efficiency, these runs were simulated
in commercial computational fluid dynamics (CFD) software called Ansys CFX.
The numerical results were in good agreement with the experimental results, which
yieldedR2
values of 0.9507 and0.9603 forflat andcurvedprofiles,respectively.Furthermore,
the findings show that the chosen parameters have an impact on the GWVPP's efficiency
via interaction as seen in response surface methodology (RSM). Furthermore, numerical
analysis increased the curved blade profile runner's total efficiency by 3.65%. In compari son with the unoptimised scenarios, the efficiency of the flat runner profile increased by
1.69%. | en_US |
