Optimal t_f and t_0 as function of A (Re=2000,Wo=15)
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2022
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| _version_ | 1867169152718864384 |
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| 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 't0_tf_A.dat' shows the variation of optimal time (corresponding to the maximum energy amplification) with the pulsation amplitude for the Reynolds number of 2000 and the Womersley number of 15. This file includes four columns: the first column indicates the pulsation amplitude; the second column indicates the initial time of perturbations normalized by pulsation period; the third column indicates the evolution time of the perturbation normalized by period; the fourth column indicates the final time normalized by the period. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_949151 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Optimal t_f and t_0 as function of A (Re=2000,Wo=15) Xu, Duo Song, Baofang Avila, Marc nonlinear instability; Pulsation amplitude; Time of pertubartion by pulsation period; Time of pertubartion energy maximum by pulsation period; Time of perturbation energy maximum - Time of perturbation 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 't0_tf_A.dat' shows the variation of optimal time (corresponding to the maximum energy amplification) with the pulsation amplitude for the Reynolds number of 2000 and the Womersley number of 15. This file includes four columns: the first column indicates the pulsation amplitude; the second column indicates the initial time of perturbations normalized by pulsation period; the third column indicates the evolution time of the perturbation normalized by period; the fourth column indicates the final time normalized by the period. |
| title | Optimal t_f and t_0 as function of A (Re=2000,Wo=15) |
| topic | nonlinear instability; Pulsation amplitude; Time of pertubartion by pulsation period; Time of pertubartion energy maximum by pulsation period; Time of perturbation energy maximum - Time of perturbation by pulsation period; transition to turbulence |
| url | https://doi.org/10.1594/PANGAEA.949151 |