Dynamics of a single buoyant plume in a FENE-P fluid Academic Article

abstract

• The dynamics of a single laminar buoyant plume in a FENE-P (finitely extensible nonlinear elastic- Peterlin) fluid has been investigated by performing a series of direct simulations over a range of Weissenberg numbers. Examination of this flow has given insight into the heat transfer reduction phenomenon observed recently in more complex Rayleigh-Benard turbulence. The simulations, which were performed with a Rayleigh number of 2.53 106 and a maximal polymeric extension of L = 100, show that the wall heat flux is reduced by about 28% at a Weissenberg number of 20, which is in reasonable agreement with the results obtained in Rayleigh-Benard turbulence. In addition, the global flow kinetic energy was reduced by about one order of magnitude.

authors

• Vajipeyajula, Bhaskar

published proceedings

• PHYSICS OF FLUIDS

author list (cited authors)

• Vajipeyajula, B., Khambampati, T., & Handler, R. A.

citation count

• 12

complete list of authors

• Vajipeyajula, Bhaskar||Khambampati, Tejsavi||Handler, Robert A

publication date

• January 2017

publisher

• AIP Publishing  Publisher

published in

• Physics of Fluids  Journal

Digital Object Identifier (DOI)

• 10.1063/1.4986749

start page

• 091701

end page

• 091701

volume

• 29

issue

• 9

URL

• http://dx.doi.org/10.1063/1.4986749