Flow visualisations and heat transfer measurements on a rotating disk, with a relatively small centred jet perpendicularly impinging on it, are accomplished by means of infrared (IR) thermography associated with the heated-thin-foil thermal sensor. Flow visualisations show a strong interaction between the turbulent jet and the laminar boundary layer over the rotating disk. A new governing similitude parameter is introduced and a heat transfer correlation for the Nusselt number at the disk centre is proposed. In most cases, the Nusselt number radial profiles tend to overlap if they are normalised with the Nusselt number computed by means of this correlation.
Convective heat transfer on a rotating disk with a centred impinging round jet / Astarita, Tommaso; Cardone, Gennaro. - In: INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER. - ISSN 0017-9310. - STAMPA. - 51:(2008), pp. 1562-1572. [10.1016/j.ijheatmasstransfer.2007.07.040]
Convective heat transfer on a rotating disk with a centred impinging round jet
ASTARITA, TOMMASO;CARDONE, GENNARO
2008
Abstract
Flow visualisations and heat transfer measurements on a rotating disk, with a relatively small centred jet perpendicularly impinging on it, are accomplished by means of infrared (IR) thermography associated with the heated-thin-foil thermal sensor. Flow visualisations show a strong interaction between the turbulent jet and the laminar boundary layer over the rotating disk. A new governing similitude parameter is introduced and a heat transfer correlation for the Nusselt number at the disk centre is proposed. In most cases, the Nusselt number radial profiles tend to overlap if they are normalised with the Nusselt number computed by means of this correlation.File | Dimensione | Formato | |
---|---|---|---|
Heat Mass Transfer 2008.pdf
non disponibili
Tipologia:
Documento in Post-print
Licenza:
Accesso privato/ristretto
Dimensione
476.07 kB
Formato
Adobe PDF
|
476.07 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.