Richard J.A.M. Stevens

Professor at the University of Twente

Wind energy · Turbulence · Environmental flows

Publication 23 · Thermal convection

Heat transport in bubbling turbulent convection

R. Lakkaraju, R.J.A.M. Stevens, P. Oresta, R. Verzicco, D. Lohse, A. Prosperetti, Proc. Natl Acad. Sci. USA 110 (23), 9237-9242 (2013).

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Main finding

Dilute point bubbles can strongly enhance heat transport in the model.

Heat transport enhancement against superheat for three bubble numbers
How to read the figure. Nusselt number normalised by its bubble-free value against the normalised superheat, for three numbers of bubbles, with an enlargement of the low-superheat region. The enhancement grows strongly with both superheat and bubble count: dilute point bubbles can raise heat transport far above the single-phase case in this model. Open the full-resolution figure. Figure 3. R. Lakkaraju et al. (2013). No separate licence is stated here; consult the original publication and credited source before reuse.

Why this matters

The model illustrates how even dilute bubble coupling can substantially alter convective heat transport, while remaining distinct from a quantitative boiling model.

Research context

This modified-system paper must remain separate from single-phase classical scaling.

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