A fuel mixture of ammonia and natural gas as a low-carbon alternative for future power generation transportation is an attractive option. In this work, 50-species reduced mechanism, NH3NG, suitable computational fluid dynamics simulations (CFD), developed ammonia–natural cofiring while addressing important emission issues, such the formation nitrogen oxides (NOx), soot, carbon monoxide, unburnt...

In this work, different ethanol ratios (5%, 10%, 15%, and 20%) blended with biodiesel were used to investigate the effects of addition on engine performance, combustion, emission characteristics a high-speed diesel in terms brake power, specific fuel consumption, thermal efficiency, cylinder pressure, temperature, heat release rate, NOx, CO, soot emissions. First, three-dimensional CFD model wa...

The influence of the inlet swirl velocity profile shape on the decay of swirl in steady-state, incompressible, laminar pipe flows is investigated by means of computational fluid dynamics. The investigation is carried out for a Reynolds number of 2000, which marks the upper limit of the laminar flow behavior for unidirectional pipe flow. Computations are performed for two different mean swirl nu...

This paper focuses on the reaction zone and soot emission characteristics of swirl spray flames iso-pentanol blends. OH planar laser induced fluorescence (PLIF) measurements were used to study lift-off local extinction features. Soot was investigated using time-resolved two-colour incandescence (2C-LII) diagnostic technique. Fuels in this n-heptane, iso-pentanol, ethanol blends n-heptane/iso-pe...

An advanced numerical investigation has been carried out in order to study the effect of multiple injection strategies on Caterpillar heavy-duty diesel engine emissions. Both different injected fuel percentages for each pulse and several dwells between main and post phase were investigated via computational fluid dynamics (CFD) and large eddy simulation (LES). Two sets of simulations were taken...

In Thailand, RSS chamber of community-level rubber cooperatives can be classified into two models: old and new model, named after the years of their establishment. Hot gas as a heat supply from Para-rubber (PR) wood (Hevea brasiliensis) combustion is used for removing moisture from the natural rubber (NR) sheets. Smoke and soot particles from PR wood burning has effected to the quality of the N...

In Thailand, RSS chamber of community-level rubber cooperatives can be classified into two models: old and new model, named after the years of their establishment. Hot gas as a heat supply from Para-rubber (PR) wood (Hevea brasiliensis) combustion is used for removing moisture from the natural rubber (NR) sheets. Smoke and soot particles from PR wood burning has effected to the quality of the N...

A coupled 3-D CFD and detailed chemical kinetics model of free-piston engine generator (FPEG) was adopted to investigate the effects initial parameters on homogeneous charge compression ignition (HCCI) combustion emission. Biodiesel with 115 species skeletal mechanism selected as fuel. Five different parameters, namely pressure, temperature, working frequency, ratio fuel equivalence ratio, were...

For a certain type of direct injection diesel engine, three-dimensional model single-cylinder complete combustion chamber and in-take/exhaust port was established. Three-dimensional Computational Fluid Dynamics (CFD) analysis software CONVERGE used for simulation. The effects fuel strategy geometry on emissions engine were studied while the volume, compression ratio, total quantity duration kep...