Energy harvesting in a flow-induced vibrating flapper with biomimetic gaits

Energy harvesting from flow induced vibrations (FIV) in flexible bodies offer opportunities for power generation in biomimicking robotic devices and is an active area of research. The focus of this study is on investigating the underlying physics and qualitatively analysing the energy extraction scenarios in similar structural systems, comprising of a flexible piezoelectric flapper in a low Reynolds number flow regime. A high-fidelity three-way fully coupled fluid-structure-electric energy solver is developed in-house to study the energy harvesting capabilities of such a flapper, its hydrodynamic characteristics and the associated unsteady flow-field. The results indicate that the flapper deformation profiles at the most efficient harvesting regimes, resemble the propulsion gaits of natural swimmers. Investigations on the effects of a sinusoidal heaving actuation reveal no significant impact on the harvested power at the high yield (high power output) regime, identified under the passiv..., This dataset includes the codes used for the simulation in the manuscript, as well as the data generated from it. A range of flexibility and inertia parameters were used in the same code to generate the data listed in the .dat, .txt files. These datasets were used for post-processing by post-processing codes (also included here) to generate the .csv files. Details are provided in the corresponding readme.md file.
These datasets (.csv,.dat) were used to generate the figures (.fig->.eps files) with the post processing codes. The saved .eps files are then post-processed by using inkscape to generate a combined figure in .eps format. The schematics are also drawn in inkscape. Details of the data usage guidelines are mentioned in the readme file., The .dat, .txt files can be opened with any text reader (e.g. text editor)
The .csv files can be opened with any excel file reader (Microsoft Excel/LibreOffice Calc)
The .m codes can be opened and run by any version of Matlab (preferably >2021a).
The .cpp files can be opened by gedit and run with pgc compilers. (details provided in the readme file for the code), # Energy harvesting in a flow-induced vibrating flapper with biomimetic gaits

Flow induced vibrating flappers with biomimetic gaits are energy efficient

This dataset contains all the raw data derived from the direct simulation for the range of parametric space. These datasets have been used for post-processing to get the derived datasets as well as to generate the figures.
Description of the Data and file structure

# Convergence studies

*=11,51,101
$=01,004,002
\**=001,0001
These numbers denote the level of fineness of element, grid and time-step size used in the folder numbering.

```
cd IJMS_submission/IJMS submission/Data/ Data\\\ folder/convergence_tests/element/n=*
/mesh/grid=$
/time/t=**
```

xf_total.dat: 1st column contains time stamps, 2-nd column contains X displacement location time history along the flapper arc length.
yf_total...