Turbulence-driven reverse lift on two-dimensional and three-dimensional structures

Yaqing Jin, Lin Yan, Haotian Qiu, Leonardo Patricio Chamorro Chavez

Research output: Contribution to journalArticle

Abstract

Using laboratory experiments and simplified theoretical arguments, we show that the level of turbulence may reverse the direction of the mean lift on two- and three-dimensional structures with relatively short, deflected splitters. Planar particle image velocimetry and a high-resolution load cell were used to characterize the near wake region and the instantaneous lift of the structures for various geometric configurations, deflection angles and turbulence levels at Reynolds number Re=2×104 based on the body width. The possibility of reverse lift may occur within a critical deflection angle, which depends on the splitter length and turbulence level. This particular phenomenon is explained quantitatively with a simple formulation that accounts for the effects of the body geometry and turbulence. The distinctive role of turbulence in structures with splitters provides insight to control hydrodynamic force in various environments.

Original languageEnglish (US)
JournalPhysical Review E
Volume98
Issue number3
DOIs
StatePublished - Sep 6 2018

Fingerprint

Reverse
Turbulence
turbulence
Three-dimensional
Deflection
deflection
near wakes
Angle
particle image velocimetry
Wake
Instantaneous
Reynolds number
Hydrodynamics
High Resolution
hydrodynamics
formulations
Configuration
Formulation
high resolution
Cell

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Turbulence-driven reverse lift on two-dimensional and three-dimensional structures. / Jin, Yaqing; Yan, Lin; Qiu, Haotian; Chamorro Chavez, Leonardo Patricio.

In: Physical Review E, Vol. 98, No. 3, 06.09.2018.

Research output: Contribution to journalArticle

@article{68adda95cd0d47678e138c7fa4fcec6d,
title = "Turbulence-driven reverse lift on two-dimensional and three-dimensional structures",
abstract = "Using laboratory experiments and simplified theoretical arguments, we show that the level of turbulence may reverse the direction of the mean lift on two- and three-dimensional structures with relatively short, deflected splitters. Planar particle image velocimetry and a high-resolution load cell were used to characterize the near wake region and the instantaneous lift of the structures for various geometric configurations, deflection angles and turbulence levels at Reynolds number Re=2×104 based on the body width. The possibility of reverse lift may occur within a critical deflection angle, which depends on the splitter length and turbulence level. This particular phenomenon is explained quantitatively with a simple formulation that accounts for the effects of the body geometry and turbulence. The distinctive role of turbulence in structures with splitters provides insight to control hydrodynamic force in various environments.",
author = "Yaqing Jin and Lin Yan and Haotian Qiu and {Chamorro Chavez}, {Leonardo Patricio}",
year = "2018",
month = "9",
day = "6",
doi = "10.1103/PhysRevE.98.033106",
language = "English (US)",
volume = "98",
journal = "Physical Review E",
issn = "2470-0045",
publisher = "American Physical Society",
number = "3",

}

TY - JOUR

T1 - Turbulence-driven reverse lift on two-dimensional and three-dimensional structures

AU - Jin, Yaqing

AU - Yan, Lin

AU - Qiu, Haotian

AU - Chamorro Chavez, Leonardo Patricio

PY - 2018/9/6

Y1 - 2018/9/6

N2 - Using laboratory experiments and simplified theoretical arguments, we show that the level of turbulence may reverse the direction of the mean lift on two- and three-dimensional structures with relatively short, deflected splitters. Planar particle image velocimetry and a high-resolution load cell were used to characterize the near wake region and the instantaneous lift of the structures for various geometric configurations, deflection angles and turbulence levels at Reynolds number Re=2×104 based on the body width. The possibility of reverse lift may occur within a critical deflection angle, which depends on the splitter length and turbulence level. This particular phenomenon is explained quantitatively with a simple formulation that accounts for the effects of the body geometry and turbulence. The distinctive role of turbulence in structures with splitters provides insight to control hydrodynamic force in various environments.

AB - Using laboratory experiments and simplified theoretical arguments, we show that the level of turbulence may reverse the direction of the mean lift on two- and three-dimensional structures with relatively short, deflected splitters. Planar particle image velocimetry and a high-resolution load cell were used to characterize the near wake region and the instantaneous lift of the structures for various geometric configurations, deflection angles and turbulence levels at Reynolds number Re=2×104 based on the body width. The possibility of reverse lift may occur within a critical deflection angle, which depends on the splitter length and turbulence level. This particular phenomenon is explained quantitatively with a simple formulation that accounts for the effects of the body geometry and turbulence. The distinctive role of turbulence in structures with splitters provides insight to control hydrodynamic force in various environments.

UR - http://www.scopus.com/inward/record.url?scp=85053163597&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053163597&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.98.033106

DO - 10.1103/PhysRevE.98.033106

M3 - Article

AN - SCOPUS:85053163597

VL - 98

JO - Physical Review E

JF - Physical Review E

SN - 2470-0045

IS - 3

ER -