Sentence examples for counter-gradient diffusion from inspiring English sources

The occurrence of the counter-gradient diffusion phenomenon will of course lead to the collapse of the "gradient-diffusion hypothesis," on which most conventional turbulence models rely.

The experiment also revealed that the onset region of this "counter-gradient" diffusion was adjacent to the strong "gradient" diffusion region.

The essential mechanism causing the counter-gradient diffusion can be explained by the unique motion of the high-temperature (low-density) gas parcel on the high-pressure side of the flame.

The quantitative appraisal of the production terms for the turbulent heat flux showed that the pressure gradient promoted gradient diffusion on the inner-wall (low-pressure) side of the curved-duct flame and caused counter-gradient diffusion on the outer-wall (high-pressure) side.

On the leeward side of the urban canyon, νt obtained by the LES was negative and the counter gradient diffusion was seen to occur.

The results indicate that a transition from counter-gradient to gradient diffusion occurs as u′/SL is increased.

In turbulent reactive flows of premixed reactants, such a substance can exhibit complex dynamic behaviour associated with counter-gradient or non-gradient diffusion as well as flame-generated turbulence.

This was argued to be linked to the switch of the tested experimental conditions from regime of counter-gradient to that of gradient diffusion.

It is found from the DNS results that cases of streamwise rotating channel flow which have a mean spanwise velocity caused by rotation involve the counter gradient turbulent diffusion.

The relative mean velocity of reactants and products provides an indication of whether turbulent diffusion of the mean progress variable occurs in the gradient or counter-gradient sense.

However, the above flames in statistically multi-dimensional situation may exhibit counter-gradient flux.