TY - GEN

T1 - Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids

AU - Mousavi Kh., Narges Susan

AU - Kumar, Sunil

AU - Narayanaswamy, Arvind

PY - 2011

Y1 - 2011

N2 - An Eulerian formalism is used to derive the energy equation for a system of magnetic nanoparticles in a fluid (ferrofluid) in the presence of uniform magnetic field. The energy equation proposed here contains an effective heat capacity, which has contributions from: (1) Brownian motion of nanoparticles, (2) magnetic field,(3) temperature, and (4) volume fraction of particles. The modified term quantitatively shows the negligible contribution of the first three factors but the significant effect of concentration of particles in change in heat capacity of ferrofluid. In order to have a better understanding of the problem, the equation is converted to a non dimensional form from which the role of each of physical parameters can be inferred.

AB - An Eulerian formalism is used to derive the energy equation for a system of magnetic nanoparticles in a fluid (ferrofluid) in the presence of uniform magnetic field. The energy equation proposed here contains an effective heat capacity, which has contributions from: (1) Brownian motion of nanoparticles, (2) magnetic field,(3) temperature, and (4) volume fraction of particles. The modified term quantitatively shows the negligible contribution of the first three factors but the significant effect of concentration of particles in change in heat capacity of ferrofluid. In order to have a better understanding of the problem, the equation is converted to a non dimensional form from which the role of each of physical parameters can be inferred.

UR - http://www.scopus.com/inward/record.url?scp=84869149508&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84869149508&partnerID=8YFLogxK

U2 - 10.1115/imece2011-63985

DO - 10.1115/imece2011-63985

M3 - Conference contribution

AN - SCOPUS:84869149508

SN - 9780791854921

T3 - ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011

SP - 635

EP - 644

BT - Fluids and Thermal Systems; Advances for Process Industries

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011

Y2 - 11 November 2011 through 17 November 2011

ER -