Exponential wake structure of heated turbulent boundary layers at elevated levels of free-stream turbulence

Journal Article · Fri May 01 00:00:00 EDT 1987 · Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States)

DOI:https://doi.org/10.1115/1.3248085· OSTI ID:6018795

Sepri, P ^[1]

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1. Univ. of Oklahoma, Norman (United States)

The wake region of a turbulent boundary layer is demonstrated to exhibit simple exponential behavior at elevated levels of free-stream turbulence (FST). As a predictive tool, the computer code STANCOOL has been modified to include FST effects in heated turbulent boundary layers. Preliminary comparisons with experimental data indicate improvements in computational capabiity, although futher development of the code is required. From these comparisons, three new results are offered: (1) At elevated levels of FST, several statistical profiles in the boundary layer wake region decay exponentially into the free stream; (2) {ovr v{prime}T{prime}} decays at half the rate of the mean velocity and temperature; (3) analytical expressions are provided for {ovr u{prime}v{prime}} and {ovr v{prime}T{prime}} in this case.

• OSTI ID: 6018795
• Journal Information: Journal of Heat Transfer (Transactions of the ASME (American Society of Mechanical Engineers), Series C); (United States), Vol. 109:2; ISSN 0022-1481
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
TURBULENT FLOW
MATHEMATICAL MODELS
BOUNDARY LAYERS
DATA
S CODES
TEMPERATURE EFFECTS
COMPUTER CODES
FLUID FLOW
INFORMATION
LAYERS
420400* - Engineering- Heat Transfer & Fluid Flow