Turbulent energy dissipation rate modification due to particle insertion: Effect of Reynolds number

Päivi Sikiö, Tero Tynjälä and Payman Jalali

Chaos, Solitons & Fractals, 2018, vol. 114, issue C, 246-255

Abstract: A hierarchical spatiotemporal dynamical system model (tree model), modified for the insertion of dispersed phase particle, is utilized to study the turbulence modulation caused by the presence of particle in high Reynolds numbers. The focus in this study is to see how the energy dissipation rate is escalated in the vicinity of particle surface. In the present study, shell model simulations are performed for two different Reynolds numbers, i.e. Re∼1/ν, as 5 × 104 and 106, corresponding to two particle sizes of 256 and 64 times of the Kolmogorov length scale, respectively. The results are compared to the corresponding unladen cases, as well as the lower Reynolds number of 104. The scaling properties of the modified tree model are assessed through the velocity structure functions, which reveals the existence of intermittency.

Keywords: Dynamical system approach; Spatiotemporal tree model; Dispersed phase multiphase system; High Reynolds turbulence; Turbulent energy dissipation (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960077918304326
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:114:y:2018:i:c:p:246-255

DOI: 10.1016/j.chaos.2018.06.038

Access Statistics for this article

Chaos, Solitons & Fractals is currently edited by Stefano Boccaletti and Stelios Bekiros

More articles in Chaos, Solitons & Fractals from Elsevier
Bibliographic data for series maintained by Thayer, Thomas R. ().