Izvorni znanstveni članak
Quench Severity and Kinetics of Wetting of Vegetable Oil Blends and Nanofluid for Heat Treatment
Vaishali JAGANNATH
; Department of Metallurgical & Materials Engineering, National Institute of Technology Karnataka, Srinivasnagar, Mangalore, India
K. Naravan PRABHU
; Department of Metallurgical & Materials Engineering, National Institute of Technology Karnataka, Srinivasnagar, Mangalore, India
Sažetak
In the present work, investigation was carried out to study the suitability
of vegetable oil blends with mineral oil and alumina based nanofluids as
quench media for heat treatment. Palm oil, sunflower oil, gingili oil were
blended with mineral oil in the ratio of 2:1, 3:1, 1:1, 1:2, and 1:3... Heat
transfer coefficients were determined using a lumped heat capacitance
model. A dynamic contact angle analyzer was used for determination
of dynamic and static contact angle of the droplet on the substrate. The
wetting behaviour of oils and their blends was modelled by a power law of
the type: θ = ktn. Wettability of nanofluids was found to be poor.
Ključne riječi
Contact angle; Heat transfer coefficient; Quench severity
Hrčak ID:
74520
URI
Datum izdavanja:
28.2.2011.
Posjeta: 1.665 *