Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Xu, Duo; Song, Baofang; Avila, Marc (2022): Optimal growth as function of A (Re=2000,Wo=20) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949159

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2022-09-28DOI registered: 2023-01-13

RIS CitationBibTeX Citation Share

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_A_Wo20.dat' shows the dependence of the maximum energy amplification on the pulsation amplitude for the Reynolds number of 2000 and the Womersley number of 20.
This file includes two columns: the first column indicates the pulsation amplitude; the second column indicates the maximum energy amplification.
Keyword(s):
nonlinear instability; transition to turbulence
Comment:
#(Re,Wo)=(2000.00,20.00)
#t0:initial time; tf:end time;
VARIABLES = "A", "TG (max in a Re)"
ZONE T="data, raw", I=9, 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:
18 data points

Data

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


A

TG
0.2288.62832761
0.4288.79861263
0.6288.96939496
1.0289.32569659
1.5289.74407317
2.0290.17880677
3.0291.05761897
4.0291.94890324
5.0292.85267349