Steady and transient numerical investigation of auto-ignition characteristics over micro-structured catalytic honeycomb reactors for Ch4 and Ch4-H2 mixtures /
دراسة عددية ثابتة ولحظية لخصائص الإشعال الذاتى فوق مفاعلات حفازة ميكروهيكلية شكل خلية النحل لغاز الميثان وخليط من غازى الميثان - الهيدروجين
Alaa Mohamed Abdelraziq Mohamed ; Supervised Mohamed Ali Hassan , Hatem Kayed Haridy
- Cairo : Alaa Mohamed Abdelraziq Mohamed , 2017
- 78 P. : charts , facsimiles ; 30cm
Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering
In this study, stable range of self-ignition for the micro-combustion of CH4 and CH4-H2 mixtures have been investigated over platinum-coated micro catalytic honeycomb reactor by CFD technique using CHEMKIN and ANSYS17.2 Packages. A certain amount of heat is furnished from outside at constant temperature with an external electric furnace to investigate localized self-ignition temperature. This investigation studies the effect of flow rate and mixture strength. Noting that, Ignition of mixtures occurs at same temperature for different mass flow rates of CH₄-Air mixtures, while it is decreased for increased flow rates of CH₄-H₂-Air mixtures. Equivalence ratio for CH₄ mixtures is found to be within different range from traditional self-ignition combustion