The Effect Of Geometry Configuration On Flame Stabilization In Micro Combustor

• Main Author: Md Nor, Nur Umairah
• Format: Thesis
• Language: English; English
• Published: 2020
• Subjects: T Technology (General); TJ Mechanical engineering and machinery
• Online Access: http://eprints.utem.edu.my/id/eprint/25489/; https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=118374

The prime motivation to the renewed interest in meso and micro-scale power generation is the limited energy resources and the strong demand of long-lasting power sources for electronics devices. The thermal energy from the micro combustors can be converted into electrical energy. However, the main obstacle that limits the use of micro combustor is difficulty in stabilizing flame. This difficulty is mainly related to the substantial heat losses due to large surface area to volume ratio. Hence, purposed of this research focuses mainly on determining the factors that affect the flame stabilization in micro-scale combustors with stainless steel wire mesh. The factors focusing on the geometry configuration of the combustor which are the inner diameter of the combustor and the number of stainless-steel wire mesh. A three-dimensional (3-D) numerical model was developed. Computational Fluid Dynamics (CFD) simulation were then performed using the numerical model. The results of the simulations are analyzed based on the flame stability in the micro combustor. The results show that a few of these factors have significant effect on the flame stability in micro scale combustors. The flame stability can be improved by increasing the inner diameter of the combustor. As for the number of stainless steel wire mesh, when the number of stainless steel wire mesh doubled, the burning velocity of the flame also increase resulting to the more stable flame with in the combustor. These findings are important for future improvement of the proposed micro-scale combustor with wire mesh.