Characterization of surface level wind in the Centro de Lançamento de Alcântara for use in rocket structure loading and dispersion studies

Marciotto, Edson R.; Fisch, Gilberto; Medeiros, Luiz Eduardo

doi:10.5028/jatm.2012.04014911

Cited by 11 publications

(7 citation statements)

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“…Most of the data used in this work are from the Muricí II meteorological campaign (Marciotto et al, 2012) conducted at CLA, during September 17-25 of 2008. The measurements were taken right at the coast.…”

Section: Datamentioning

confidence: 99%

Observational Study of the Surface Layer at an Ocean–Land Transition Region

Medeiros

Magnago

Fisch

et al. 2013

J.Aerosp. Technol. Manag.

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High-frequency measurements of wind, and temperature were made during the dry season of 2008 to study the development of an internal boundary layer at the main Brazilian space launching centre, Centro de Lançamento de Alcântara at Alcântara, Maranhão, Brazil. Turbulence measurements taken at the coast, in two different points 227 m apart show different daily cycles of turbulent kinetic energy friction velocity (u *), and buoyancy flux w' T ν '. Surface roughness change, surface heating change, and a gap in the natural vegetation seem to be the causes for the variation in these turbulent parameters. The mean wind cycle also shows distinct patterns. It seems that, first, internal boundary layers develop when the oceanic surface layer reaches the continent, and a second when the first internal boundary layer's flow encounters the gap. A direct implication is that turbulence is not horizontally homogeneous and measurements taken at single places are not spatially representative. Knowing how turbulence varies spatially is necessary information to understand the diffusion of pollutants exhausted by rockets near the coast.

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Section: Datamentioning

confidence: 99%

Observational Study of the Surface Layer at an Ocean–Land Transition Region

Medeiros

Magnago

Fisch

et al. 2013

J.Aerosp. Technol. Manag.

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“…These values are coehent with field measurements conducted by Ref. 15 and previous wind tunnel measurements, Ref. 18.…”

Section: Piv Measurementsmentioning

confidence: 88%

Atmospheric Boundary Layer Simulation in a Wind Tunnel for Analysis of the Wind Flow at the Centro de Lançamento de Alcântara

Avelar

Fisch

Marciotto

2012

4th AIAA Atmospheric and Space Environments Conference

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“…This is the case of CLA, where strong winds are observed during the dry season, from July to December. The ABL and atmospheric from observations, numerical simulations, and wind tunnel measurements (Pires et al, 2008;Avelar et al, 2010;Fisch et al, 2010;Marciotto et al, 2012) The present work is an extended version of a paper recently presented at the fourth AIAA Atmospheric and Space Environments Conference, in New Orleans, from 25 to 28 June 2012, Avelar et al (2012), and it is also a continuation of a previous study (Avelar et al, 2010), in which the procedures for a boundary layer simulation in a short-test section wind tunnel (TA-2) were described and some preliminary results CLA region, were presented.…”

Section: Studying the Wind Pattern At Centro De Lançamento De Alcântaramentioning

confidence: 99%

Wind tunnel simulation of the atmospheric boundary layer for studying the wind pattern at Centro de Lançamento de Alcântara

Avelar

Brasileiro

Marto

et al. 2012

JATM

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Centro de Lançamento de Alcântara is the main Brazilian launching center. In spite of presenting several desirable aspects, due to its proximity to the Equator, it has a peculiar topography because of the existence of a coastal cliff, hich modi es the characteristics of the atmospheric boundary layer. his may affect roc et launching operations, especially hen associated ith safety procedures. his or is a continuation of previous experimental studies about the air o pattern at this launching center. An improved ay of simulating the atmospheric boundary layer in a short test section ind tunnel using passive methods is presented here. It is also presented a preliminary analysis of the air o pattern in Centro de Lançamento de Alcântara, at speci c positions as the edge of cliff and around the mobile integration to er, from ind tunnel measurements using particle image velocimetry. hree values of eynolds number, based on the coastal cliff height, l, ranging from 6.8×105 to 2.0×106, were considered.

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Characterization of surface level wind in the Centro de Lançamento de Alcântara for use in rocket structure loading and dispersion studies

Cited by 11 publications

References 0 publications

Observational Study of the Surface Layer at an Ocean–Land Transition Region

Observational Study of the Surface Layer at an Ocean–Land Transition Region

Atmospheric Boundary Layer Simulation in a Wind Tunnel for Analysis of the Wind Flow at the Centro de Lançamento de Alcântara

Wind tunnel simulation of the atmospheric boundary layer for studying the wind pattern at Centro de Lançamento de Alcântara

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