Answers are grounded in this paper and cite their sources.
The nonzero value of the measured skewness of the streamwise temperature derivative is not necessarily inconsistent with the concept of local isotropy of small scale turbulence, and may be estimated adequately from a ramp-like model for the large scale structure of temperature.
No takes yet. Share an insight, caveat, or question.
Sreenivasan et al. (1977) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: