Comparison of Convective and Radiative Heating Modes on the Thermophysical Changes of a Cerium Nitrate Droplet


Autoria(s): Pathak, Binita; Basu, Saptarshi
Data(s)

2016

Resumo

In this paper, we try to establish the equivalence or similarity in the thermal and physiochemical changes in precursor droplets (cerium nitrate) in convective and radiative fields. The radiative field is created through careful heating of the droplet using a monochromatic light source (CO2 laser). The equivalence is also established for different modes of convection like droplet injected into a high-speed flow and droplet experiencing a convective flow due to acoustic streaming (levitated) only. The thermophysical changes are studied in an aqueous cerium nitrate droplet, and the dissociation of cerium nitrate to ceria is modeled using modified Kramers' reaction rate formulation. It is observed that vaporization, species accumulation, and chemical characteristics obtained in a convectively heated droplet are retained in a radiatively heated droplet by careful adjustment of the laser intensity. The timescales and ceria yield match reasonably well for both the cases. It is also noted that similar conclusions are drawn in both levitated droplet and a nonlevitated droplet.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/53348/1/Jou_Ter_Sci_Eng_App_8-1_011009_2016.pdf

Pathak, Binita and Basu, Saptarshi (2016) Comparison of Convective and Radiative Heating Modes on the Thermophysical Changes of a Cerium Nitrate Droplet. In: JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS, 8 (1, SI).

Publicador

ASME

Relação

http://dx.doi.org/10.1115/1.4030729

http://eprints.iisc.ernet.in/53348/

Palavras-Chave #Mechanical Engineering
Tipo

Journal Article

PeerReviewed