The goal of this work was to develop a numerical model
for peat dust denagrations based on experiments done in a
closed 20 dm3 spherical vessel. The gas-particle mixture
is described as a continuous two-phase flow. The model
includes drying, pyrolysis and combustion of the
devolatilized gases and char. Local time dependent
average values for the size and other properties of the
particles are used.
The results from the simulation are physically reasonable
and promising. Reasons for the disagreements between the
results from simulation and experiments are discussed and
suggestions for further experimental research and model
development are given.
As an application the explosion of dry peal dust in a
vented vessel is simulated.
The extension of the model to strongly heterogenous
mixtures with respect to particle size, moisture content
or other properties is suggested and considered
reasonable from both the modelling and computational
points of view.
|Place of Publication||Espoo|
|Publisher||VTT Technical Research Centre of Finland|
|Number of pages||84|
|Publication status||Published - 1987|
|MoE publication type||D4 Published development or research report or study|
|Series||Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports|
- dust explosions