Jg. Marakis et al., Parallel ray tracing for radiative heat transfer - Application in a distributed computing environment, INT J N M H, 11(7), 2001, pp. 663-681
Citations number
33
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
Notes that, in a full-scale application of the Monte Carlo method for combi
ned heat transfer analysis, problems usually arise from the large computing
requirements. Here the method to overcome this difficulty is the parallel
execution of the Monte Carlo method in a distributed computing environment.
Addresses the problem of determination of the temperature field formed und
er the assumption of radiative equilibrium in an enclosure idealizing an in
dustrial furnace. The medium contained in this enclosure absorbs, emits and
scatters anisotropically thermal radiation. Discusses two topics in detail
: first, the efficiency of the parallelization of the developed code, and s
econd, the influence of the scattering behavior of the medium. The adopted
parallelization method for the first topic is the decomposition of the stat
istical sample and its subsequent distribution among the available processo
rs. The measured high efficiencies showed that this method is particularly
suited to the target architecture of this study, which is a dedicated netwo
rk of workstations supporting the message passing paradigm. For the second
topic, the results showed that taking into account the isotropic scattering
, as opposed to neglecting the scattering, has a pronounced impact on the t
emperature distribution inside the enclosure. In contrast, the consideratio
n of the sharply forward scattering, that is characteristic of all the real
combustion particles, leaves the predicted temperature field almost undist
inguishable from the absorbinglemitting case.