Heat transport in bubbling turbulent convection

Lakkaraju, R.; Stevens, R.J.A.M.; Oresta, P.; Verzicco, R.; Lohse, D.; Prosperetti, A.

doi:10.1073/pnas.1217546110

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).

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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