Abstract
Turbulent open channel-flow under strongly stable thermal stratification is investigated. It is shown that the dominant effects of strong stable stratification on the characteristics of near-wall turbulence are transient. The budget of turbulent kinetic energy, the budget for the tangential Reynolds stress, and the relevant length scales are discussed. It is shown that near-wall turbulence at quasistationarity is approximately insensitive to the choice of upper thermal boundary condition.
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