Acceleration statistics of light particles in turbulence

Vivek N. Prakash; Yoshiyuki Tagawa; Enrico Calzavarini; Julián Martínez Mercado; Federico Toschi; Detlef Lohse; Chao Sun

Acceleration statistics of light particles in turbulence

Vivek N. Prakash
, Yoshiyuki Tagawa
, Enrico Calzavarini
, Julián Martínez Mercado
, Federico Toschi
, Detlef Lohse
, Chao Sun

Physics of Fluids

Research output: Contribution to conference › Paper › peer-review

52 Downloads (Pure)

Abstract

We report results from the first systematic Lagrangian experimental investigation in the previously unexplored regime of light (air bubbles in water, and rigid hollow spheres) and large particles (D/η >> 1) in turbulence [1]. Using a traversing camera setup and particle tracking, we study the Lagrangian acceleration statistics of ∼3 mm diameter (D) bubbles in a water tunnel with nearly homogeneous and isotropic turbulence generated by an active-grid. The Reynolds number (Re_λ) is varied from 145 to 230, resulting in size ratios, D/η in the range of 7.3-12.5, where η is the Kolmogorov length scale. The experimental results are closely matched by numerical simulations of finite-size bubbles with the Faxén corrections. We also report preliminary results on light rigid spheres in turbulence.

Original language	English
Publication status	Published - 1 Jan 2020
Event	14th European Turbulence Conference, ETC 2013 - Lyon, France Duration: 1 Sept 2013 → 4 Sept 2013 Conference number: 14

Conference

Conference	14th European Turbulence Conference, ETC 2013
Abbreviated title	ETC
Country/Territory	France
City	Lyon
Period	1/09/13 → 4/09/13

Access to Document

ArticleFinal published version, 665 KB

http://etc14.ens-lyon.fr/etc-14-proceedings/accepted-talks/

Cite this

@conference{ee082aa2fdf447868d7890d5b18f9bc4,

title = "Acceleration statistics of light particles in turbulence",

abstract = "We report results from the first systematic Lagrangian experimental investigation in the previously unexplored regime of light (air bubbles in water, and rigid hollow spheres) and large particles (D/η >> 1) in turbulence [1]. Using a traversing camera setup and particle tracking, we study the Lagrangian acceleration statistics of ∼3 mm diameter (D) bubbles in a water tunnel with nearly homogeneous and isotropic turbulence generated by an active-grid. The Reynolds number (Reλ) is varied from 145 to 230, resulting in size ratios, D/η in the range of 7.3-12.5, where η is the Kolmogorov length scale. The experimental results are closely matched by numerical simulations of finite-size bubbles with the Fax{\'e}n corrections. We also report preliminary results on light rigid spheres in turbulence.",

author = "Prakash, \{Vivek N.\} and Yoshiyuki Tagawa and Enrico Calzavarini and Mercado, \{Juli{\'a}n Mart{\'i}nez\} and Federico Toschi and Detlef Lohse and Chao Sun",

year = "2020",

month = jan,

day = "1",

language = "English",

note = "14th European Turbulence Conference, ETC 2013, ETC ; Conference date: 01-09-2013 Through 04-09-2013",

}

TY - CONF

T1 - Acceleration statistics of light particles in turbulence

AU - Prakash, Vivek N.

AU - Tagawa, Yoshiyuki

AU - Calzavarini, Enrico

AU - Mercado, Julián Martínez

AU - Toschi, Federico

AU - Lohse, Detlef

AU - Sun, Chao

N1 - Conference code: 14

PY - 2020/1/1

Y1 - 2020/1/1

N2 - We report results from the first systematic Lagrangian experimental investigation in the previously unexplored regime of light (air bubbles in water, and rigid hollow spheres) and large particles (D/η >> 1) in turbulence [1]. Using a traversing camera setup and particle tracking, we study the Lagrangian acceleration statistics of ∼3 mm diameter (D) bubbles in a water tunnel with nearly homogeneous and isotropic turbulence generated by an active-grid. The Reynolds number (Reλ) is varied from 145 to 230, resulting in size ratios, D/η in the range of 7.3-12.5, where η is the Kolmogorov length scale. The experimental results are closely matched by numerical simulations of finite-size bubbles with the Faxén corrections. We also report preliminary results on light rigid spheres in turbulence.

AB - We report results from the first systematic Lagrangian experimental investigation in the previously unexplored regime of light (air bubbles in water, and rigid hollow spheres) and large particles (D/η >> 1) in turbulence [1]. Using a traversing camera setup and particle tracking, we study the Lagrangian acceleration statistics of ∼3 mm diameter (D) bubbles in a water tunnel with nearly homogeneous and isotropic turbulence generated by an active-grid. The Reynolds number (Reλ) is varied from 145 to 230, resulting in size ratios, D/η in the range of 7.3-12.5, where η is the Kolmogorov length scale. The experimental results are closely matched by numerical simulations of finite-size bubbles with the Faxén corrections. We also report preliminary results on light rigid spheres in turbulence.

UR - https://www.scopus.com/pages/publications/85085776512

M3 - Paper

T2 - 14th European Turbulence Conference, ETC 2013

Y2 - 1 September 2013 through 4 September 2013

ER -

Acceleration statistics of light particles in turbulence

Abstract

Conference

Access to Document

Other files and links

Fingerprint

Cite this