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Xu, Duo; Song, Baofang; Avila, Marc (2022): Optimal growth as function of Wo (Re=2000,A=1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949203

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Published: 2022-09-29DOI registered: 2023-01-13

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Abstract:
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 'TG_Wo_A1.dat' shows the dependence of the maximum energy amplification on the Womersley number for the Reynolds number of 2000 and the amplitude of 1.
This file includes two columns: the first column indicates the Womersley number; the second column indicates the maximum energy amplification.
Keyword(s):
nonlinear instability; transition to turbulence
Comment:
#(Re,A)=(2000.00,1.00)
#t0:initial time; tf:end time;
VARIABLES = "Wo", "TG (max at a Wo)"
ZONE T="data, classical (k=0,m=1)", I=15, J=1
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Pulsation amplitudeAXu, Duo
Transient energy growthTGXu, Duo
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 2 (ProcLevel2)
Size:
90 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


A

TG
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31078.02240605
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45288.61189645
11151.41768600
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31077.25808900
590590.47508944
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10505744.45632289
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18303.16638406
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30193.88989512
3523.43248121
4015.01501246
4510.31687498
11151.54648420
21132.51485607
31078.02240605
590590.47508944
71926092.84010390
82370261.42883346
10505744.45632289
151813.51815689
18303.16638406
20289.32569659
25288.67346055
30288.74625365
35288.73025162
40288.69425581
45288.61189645