Abstract   A new micro combustion concept is described in this work by introducing a new terminology in the micro combustion. The effects of Area to Volume Ratio (AVR) of the micro-combustors were studied to find the best performance of designed micro-combustors. In order to test the feasibility of the designed micro combustors before the actual experiment is conducted, simulation work was perf...

The effect of differentiating the thermal conductivity between inner and outer walls on stability a U-bend catalytic heat-recirculating micro-combustor was investigated. To this end, two-dimensional computational fluid dynamics (CFD) model developed using commercial code ANSYS Fluent (release 2020 R1) and, for different combinations values conductivities, simulations lean pre-mixed propane/air ...

The demand for cleaner, more efficient, and durable sources of electricity is driving research into small-scale power generation. Micro gas turbines are especially suitable by virtue their high density reliability, but a major drawback poor overall efficiency due to increasing parasitic energy losses relative net output as size decreases. Additive manufacturing offers design freedoms that could...

The objective of this paper is to present recent research on the use of a Reynolds Stress Closure Model (RSCM) for a Lean Direct Injection (LDI) combustor with swirlers. This paper will provide comparisons between RSCM results, k-ε turbulence model results, and experimental data for chemically nonreactive swirling flows. The results show that, for high degree swirl flow, the RSCM can provide pr...

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Abstract In order to broaden the stable working range of air-breathing continuous rotating detonation engine and explore influence combustor configuration on propagation characteristics wave, cavity-based annular is introduced. Air-breathing experiments are conducted with non-premixed ethylene air. A tri-propellant air-heater used imitate outlet parameters intake Ma4/20km. The designed mass flo...

This study reports the first experiments of a large-scale hydrogen-fueled oblique detonation engine model conducted in hypersonic wind tunnel. The stabilization characteristic wave, specific combustion mode and corresponding flow structures are emphasized. Results show that by adjusting geometry combustor different tests, two stabilized modes relevant to theoretical branches at given wedge angl...

This report presents the results of a research program designed to examine the engineering and environmental acceptability of using municipal solid waste (MSW) combustor ash as an aggregate substitute in the manufacture of construction quality cement blocks. Approximately 350 tons of MSW combustor ash was combined with Portland cement to form standard hollow masonry blocks using conventional bl...