Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2022
|
| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.949058 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867168218036043776 |
|---|---|
| author | Xu, Duo Song, Baofang Avila, Marc |
| author_facet | Xu, Duo Song, Baofang Avila, Marc |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The data are obtained via an in-house Matlab script (developed by Dr. Baofang Song) to compute the non-modal transient growth of disturbances in pulsatile and oscillatory pipe flows. In this study, a Newtonian fluid driven by pulsatile and oscillatory flow rate flows in a straight pipe. In pulsatile flow, there are three governing parameters: steady Reynolds number (defined by the steady flow component), pulsation amplitude (ratio of oscillatory and steady flow component) and Womersley number (dimensionless pulsation and oscillation frequency). In oscillatory flow, due to vanishment of steady flow component, oscillatory Reynolds number (defined by the oscillation flow component) and Womersley number. The Reynolds number defined by the thickness of Stokes layer is alternatively used for the oscillatory Reynolds number. The study was carried out in a manner that one governing parameter varies while other governing parameters are fixed. The data file 'time_wavenumber.dat' shows the optimal wavenumber (corresponding to the maximum energy amplification) at a time instant. This file includes three columns: the first column indicates the dimensionless time normalized by the pulsation period; the second column indicates the optimal axial wavenumber at the time instant; the third column indicates the optimal azimuthal wavenumber at the time instant. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_949058 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Optimal wavenumber envelope (Re=2000,A=1,Wo=15) Xu, Duo Song, Baofang Avila, Marc Axial wave number; Azimuthal wave number; nonlinear instability; Time by pulsation period; transition to turbulence The data are obtained via an in-house Matlab script (developed by Dr. Baofang Song) to compute the non-modal transient growth of disturbances in pulsatile and oscillatory pipe flows. In this study, a Newtonian fluid driven by pulsatile and oscillatory flow rate flows in a straight pipe. In pulsatile flow, there are three governing parameters: steady Reynolds number (defined by the steady flow component), pulsation amplitude (ratio of oscillatory and steady flow component) and Womersley number (dimensionless pulsation and oscillation frequency). In oscillatory flow, due to vanishment of steady flow component, oscillatory Reynolds number (defined by the oscillation flow component) and Womersley number. The Reynolds number defined by the thickness of Stokes layer is alternatively used for the oscillatory Reynolds number. The study was carried out in a manner that one governing parameter varies while other governing parameters are fixed. The data file 'time_wavenumber.dat' shows the optimal wavenumber (corresponding to the maximum energy amplification) at a time instant. This file includes three columns: the first column indicates the dimensionless time normalized by the pulsation period; the second column indicates the optimal axial wavenumber at the time instant; the third column indicates the optimal azimuthal wavenumber at the time instant. |
| title | Optimal wavenumber envelope (Re=2000,A=1,Wo=15) |
| topic | Axial wave number; Azimuthal wave number; nonlinear instability; Time by pulsation period; transition to turbulence |
| url | https://doi.org/10.1594/PANGAEA.949058 |