Development of Model for Heat Loss from a Micro Combustor Using Pressure Simulation

作者:

DOI: 10.3795/KSME-B.2003.27.1.039

关键词: CombustorCombustionConservation of energyHeat transferThermodynamicsMicroelectromechanical systemsMechanicsMaterials scienceFlame speedScale (ratio)Heat transfer coefficient

摘要: As the size of a combustor decreases to MEMS scale, heat loss increases and becomes dominant effect on performance devices. Existing models, however, are not adequate predict transfer combustion processes in such small scales. In present study, semi-empirical model calculate from micro is described. The derives coefficients that best fits characteristics represented by transient pressure record after completed. From conservation energy equation applied burned gas inside combustor, relationship between reduced. Two models for were tested; constant first order polynomial temperature with its determined fitting measurements. was tested problem cooling process burnt comparison measurements showed good agreements. used calculation vessel. results dependence flame speed scale chamber through enhanced loss.

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