| Autor: |
Samir, Ali, Hammoodi, Karrar A., Omar, Ihab, Basem, Ali, Flayyih, Mujtaba A. |
| Zdroj: |
Mathematical Modelling of Engineering Problems; Apr2023, Vol. 10 Issue 2, p537-545, 9p |
| Abstrakt: |
The hybrid combustor is represented by combined between premixed and diffusion flame. The premixed flame implemented by cylindrical burner which it gives swirling flow by two nozzles in opposite direction. The diffusion flame investigated by co-axial jet of fuel and annulled by air. The hybrid flame was experimentally and numerically investigated to get high level of flame stability and low emissions level of pollutant. This research used working fuel of liquid petroleum gas which it has 40% propane and 60% butane. Two types of flame were examined, diffusion flame combustion DFC and hybrid flame combustion HFC. In HFC, the influences of fuel nozzle geometry on air/fuel mixing were achieved in terms of stability of flame and level of pollutant emissions. An extremely stability of flame can be given in HFC by the swirling premixed which utilized it as a flame holder because it created over all inner surface of burner. The results showed that the burner design gave high vortex flow by evaluating swirl number for hybrid flame in term of heat input and overall equivalent ratio. The results of flame temperature for three types of combustion premixed flame combustion PFC, DFC and HFC with lean, rich and stoichiometric of equivalence ratio. Numerically studded temperature distribution of diffusion flame combustion by simulate cyclone burner which using in experimental work. Fluent Ansys 16.1 used for 2D simulate turbulent modeling (Standard k-ε model). Three cases of mixture investigated numerically lean, rich and stoichiometric and compared it with experimental rustles. The temperature observed numerically is more than which observed experimentally because the enhancement in heat transfer through test rig burner and low mixing efficiency between air and fuel. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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