Part II: Computational studies on a pulverised fuel stove From the article: This paper presents computational and analytical studies made on the pulverised fuel stove reported in part I (Dixit CSB, Paul PJ, Mukunda HS. Experimental studies on a pulverised fuel stove. Biomass and Bioenergy, to be published). An analysis has been carried out on the condensed phase thermal profile with moving pyrolysis front for this stove. This unsteady thermal analysis that accounts for moving pyrolysis front has provided the predictions for the rate of movement of the pyrolysis front. The comparison of the predicted temperature profiles and pyrolysis front movement rates with the measured data is excellent. The single port configuration was computationally analysed with an aim to understand the aero-thermo-chemical behaviour of the stove operation in combustion and gasification modes. The g-phase of tangential entry stove was subjected to a three-dimensional analysis using a commercial CFD code CFX TASCflow with combustion modelled using single step overall reaction. It was possible to obtain combustion and gasification modes of stove operation computationally also by varying the fuel release pattern. A fuel release pattern biased towards the bottom of the port as seen in the experiments, when used for the calculations, resulted in gasification mode operation while uniform fuel release pattern induced combustion mode operation. Comparison of g-phase temperature profiles in combustion mode seems satisfactory. The comparison of g-phase temperature profiles in the gasification mode appears intriguing. An explanation for the behaviour is sought in faster hydrogen combustion compared to carbon monoxide, something not accounted for in the calculations with single step chemistry. About Us Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Vestibulum tortor quam, feugiat vitae, ultricies eget, tempor sit amet, ante. Pellentesque habitant morbi tristique senectus. Address Twitter, Inc. 795 Folsom Ave, Suite 600 San Francisco, CA 94107 P: (123) 456-7890
This is a companion discussion topic for the original entry at http://dev.driveonwood.com/library/stove-part-2/