Temperature structure functions for air flow over moderately heated ground

K. G. Aivalis, K. R. Sreenivasan, Y. Tsuji, J. C. Klewicki, C. A. Biltoft

Research output: Contribution to journalArticle

Abstract

We study temperature structure functions of second, fourth, and sixth orders at heights of up to 2 m above the ground in moderately heated atmosphere. Most of the data come from measurements over salt flats of the Utah desert, with well-defined wind direction and uniform temperature boundary conditions. As in high-Rayleigh-number convection in a closed container, a thermal boundary layer develops near the ground, its thickness here being of the order of 50 cm. We demonstrate the coexistence of two scaling ranges, one of which corresponds to the classical inertial range and the other to the buoyant range influenced by thermal convection. The determination of scaling exponents in the two ranges is facilitated by the use of a scaling function. We present the variations with height of scaling exponents in both ranges, as well as the crossover scales from one range to another.

Original languageEnglish (US)
Pages (from-to)2439-2446
Number of pages8
JournalPhysics of Fluids
Volume14
Issue number7
DOIs
StatePublished - Jul 2002

Fingerprint

air flow
scaling
Air
flats (landforms)
Containers
Boundary layers
Salts
Boundary conditions
exponents
thermal boundary layer
Temperature
wind direction
temperature
deserts
Rayleigh number
containers
free convection
crossovers
convection
boundary conditions

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Temperature structure functions for air flow over moderately heated ground. / Aivalis, K. G.; Sreenivasan, K. R.; Tsuji, Y.; Klewicki, J. C.; Biltoft, C. A.

In: Physics of Fluids, Vol. 14, No. 7, 07.2002, p. 2439-2446.

Research output: Contribution to journalArticle

Aivalis, K. G. ; Sreenivasan, K. R. ; Tsuji, Y. ; Klewicki, J. C. ; Biltoft, C. A. / Temperature structure functions for air flow over moderately heated ground. In: Physics of Fluids. 2002 ; Vol. 14, No. 7. pp. 2439-2446.
@article{acc409c13ccf4e1baa1eaf3bcec8364c,
title = "Temperature structure functions for air flow over moderately heated ground",
abstract = "We study temperature structure functions of second, fourth, and sixth orders at heights of up to 2 m above the ground in moderately heated atmosphere. Most of the data come from measurements over salt flats of the Utah desert, with well-defined wind direction and uniform temperature boundary conditions. As in high-Rayleigh-number convection in a closed container, a thermal boundary layer develops near the ground, its thickness here being of the order of 50 cm. We demonstrate the coexistence of two scaling ranges, one of which corresponds to the classical inertial range and the other to the buoyant range influenced by thermal convection. The determination of scaling exponents in the two ranges is facilitated by the use of a scaling function. We present the variations with height of scaling exponents in both ranges, as well as the crossover scales from one range to another.",
author = "Aivalis, {K. G.} and Sreenivasan, {K. R.} and Y. Tsuji and Klewicki, {J. C.} and Biltoft, {C. A.}",
year = "2002",
month = "7",
doi = "10.1063/1.1485079",
language = "English (US)",
volume = "14",
pages = "2439--2446",
journal = "Physics of Fluids",
issn = "1070-6631",
publisher = "American Institute of Physics Publising LLC",
number = "7",

}

TY - JOUR

T1 - Temperature structure functions for air flow over moderately heated ground

AU - Aivalis, K. G.

AU - Sreenivasan, K. R.

AU - Tsuji, Y.

AU - Klewicki, J. C.

AU - Biltoft, C. A.

PY - 2002/7

Y1 - 2002/7

N2 - We study temperature structure functions of second, fourth, and sixth orders at heights of up to 2 m above the ground in moderately heated atmosphere. Most of the data come from measurements over salt flats of the Utah desert, with well-defined wind direction and uniform temperature boundary conditions. As in high-Rayleigh-number convection in a closed container, a thermal boundary layer develops near the ground, its thickness here being of the order of 50 cm. We demonstrate the coexistence of two scaling ranges, one of which corresponds to the classical inertial range and the other to the buoyant range influenced by thermal convection. The determination of scaling exponents in the two ranges is facilitated by the use of a scaling function. We present the variations with height of scaling exponents in both ranges, as well as the crossover scales from one range to another.

AB - We study temperature structure functions of second, fourth, and sixth orders at heights of up to 2 m above the ground in moderately heated atmosphere. Most of the data come from measurements over salt flats of the Utah desert, with well-defined wind direction and uniform temperature boundary conditions. As in high-Rayleigh-number convection in a closed container, a thermal boundary layer develops near the ground, its thickness here being of the order of 50 cm. We demonstrate the coexistence of two scaling ranges, one of which corresponds to the classical inertial range and the other to the buoyant range influenced by thermal convection. The determination of scaling exponents in the two ranges is facilitated by the use of a scaling function. We present the variations with height of scaling exponents in both ranges, as well as the crossover scales from one range to another.

UR - http://www.scopus.com/inward/record.url?scp=0036639930&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036639930&partnerID=8YFLogxK

U2 - 10.1063/1.1485079

DO - 10.1063/1.1485079

M3 - Article

VL - 14

SP - 2439

EP - 2446

JO - Physics of Fluids

JF - Physics of Fluids

SN - 1070-6631

IS - 7

ER -