The Interdependence of Some Moments of the PDF of Scalar Concentration
نویسنده
چکیده
A quantity of miscible contaminant gas is released into the atmospheric boundary layer and the objective is to describe the evolution of contaminant concentration values within the cloud. Although turbulent convective motions will spread the contaminant cloud over distances of tens of meters the only mixing between host and contaminant fluid, and hence reduction of concentration values, takes place through molecular diffusion over length scales of about a millimeter. The normal way to observe the state of concentration values is through the probability density function (PDF) p(2;x,t) defined as
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