LDA spectral measurements in a turbulent boundary layer

Conference · Fri May 01 00:00:00 EDT 1992 · Experimental Thermal and Fluid Science; (United States)

OSTI ID:7200487

Cenedese, A; Costantini, A; Romano, G P ^[1]

---

1. Karlsruhe, Universitaet, (Germany)

Fluid velocity measurements in a turbulent boundary layer are performed by means of laser-Doppler anemometry (LDA) in order to analyze, in the time and frequency domain, the trend of turbulent quantities very close to the wall; a large number of data are achieved at a high rate. Three velocity components are simultaneously measured using two independent LDA systems; correlation and spectral density functions together with integral and Taylor time scales at each distance from the wall are calculated. An evaluation of the amplitude of the anisotropic region in the frequency domain is also performed. 10 refs.

• OSTI ID: 7200487
• Report Number(s): CONF-9009342--
• Journal Information: Experimental Thermal and Fluid Science; (United States), Journal Name: Experimental Thermal and Fluid Science; (United States) Vol. 5:3; ISSN ETFSE; ISSN 0894-1777
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOUNDARY LAYERS
DATA ANALYSIS
FLUID FLOW
LAYERS
MEASURING INSTRUMENTS
MEASURING METHODS
TURBULENT FLOW
VELOCIMETERS
VELOCITY
WALLS