Investigation of Rossby-number similarity in the neutral boundary layer using large-eddy simulation

Conference · Fri Jan 01 00:00:00 EST 1988

OSTI ID:5062875

Ohmstede, W D; Cederwall, R T; Meyers, R E

One special case of particular interest, especially to theoreticians, is the steady-state, horizontally homogeneous, autobarotropic (PLB), hereafter referred to as the neutral boundary layer (NBL). The NBL is in fact a 'rare' atmospheric phenomenon, generally associated with high-wind situations. Nevertheless, there is a disproportionate interest in this problem because Rossby-number similarity theory provides a sound approach for addressing this issue. Rossby-number similarity theory has rather wide acceptance, but because of the rarity of the 'true' NBL state, there remains an inadequate experimental database for quantifying constants associated with the Rossby-number similarity concept. Although it remains a controversial issue, it has been proposed that large-eddy simulation (LES) is an alternative to physical experimentation for obtaining basic atmospherc 'data'. The objective of the study reported here is to investigate Rossby-number similarity in the NBL using LES. Previous studies have not addressed Rossby-number similarity explicitly, although they made use of it in the interpretation of their results. The intent is to calculate several sets of NBL solutions that are ambiguous relative to the their respective Rossby numbers and compare the results for similarity, or the lack of it. 14 refs., 1 fig.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5062875
• Report Number(s): UCRL-97853; CONF-880463-2; ON: DE88008910
• Resource Relation: Conference: 8. symposium on turbulence and diffusion of the American Meterological Society, San Diego, CA, USA, 1 Apr 1988
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUNDARY LAYERS
COMPUTERIZED SIMULATION
PLANETARY ATMOSPHERES
EDDY CURRENTS
EQUATIONS OF MOTION
SCALING LAWS
TURBULENT FLOW
ATMOSPHERES
CURRENTS
DIFFERENTIAL EQUATIONS
ELECTRIC CURRENTS
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FLUID FLOW
LAYERS
PARTIAL DIFFERENTIAL EQUATIONS
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