In this paper, infrared thermography is used to measure the transient contact temperature between impinging droplets and hot solid surfaces. Droplets are released onto the heated solid surface of a barium fluoride (BaF2) disk, which has a high transmittance (about 90%) in the 8-12 m range (typical of longwave infrared cameras). The interface temperature is measured from below, through the solid material, by infrared thermography. Since the solid is IR-transparent, a black coating layer is used to allow radiative heating of the surface and provide a method to measure the liquid-solid interface temperature. A numerical code is then presented, which simulates the evaporation of water droplets on hot solid surfaces. At the present stage of development, single-phase evaporation is addressed. The three-dimensional energy diffusion equation, discretized using the finite volume method, is employed to model the transient within both the droplets and the solid substrate. The numerical results are validated by comparison with the experimental data.
Dropwise Cooling: Experimental Tests by Infrared Thermography and Numerical Simulations / Tartarini, Paolo; Corticelli, Mauro Alessandro; L., Tarozzi. - ELETTRONICO. - (2007), pp. Session 5-Paper 7. ((Intervento presentato al convegno 10th UK National Heat Transfer Conference tenutosi a Edinburgh, UK nel 10-11 Settembre 2007.
Data di pubblicazione: | 2007 |
Titolo: | Dropwise Cooling: Experimental Tests by Infrared Thermography and Numerical Simulations |
Autore/i: | Tartarini, Paolo; Corticelli, Mauro Alessandro; L., Tarozzi |
Autore/i UNIMORE: | |
Nome del convegno: | 10th UK National Heat Transfer Conference |
Luogo del convegno: | Edinburgh, UK |
Data del convegno: | 10-11 Settembre 2007 |
Pagina iniziale: | Session 5 |
Pagina finale: | Paper 7 |
Citazione: | Dropwise Cooling: Experimental Tests by Infrared Thermography and Numerical Simulations / Tartarini, Paolo; Corticelli, Mauro Alessandro; L., Tarozzi. - ELETTRONICO. - (2007), pp. Session 5-Paper 7. ((Intervento presentato al convegno 10th UK National Heat Transfer Conference tenutosi a Edinburgh, UK nel 10-11 Settembre 2007. |
Tipologia | Relazione in Atti di Convegno |
File in questo prodotto:

I documenti presenti in Iris Unimore sono rilasciati con licenza Creative Commons Attribuzione - Non commerciale - Non opere derivate 3.0 Italia, salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris