The mathematical modeling of heat transfer in micro-combustor
- سال انتشار: 1387
- محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو
- کد COI اختصاصی: ICNN02_638
- زبان مقاله: انگلیسی
- تعداد مشاهده: 750
نویسندگان
Department of Mechanical Engineering; Iran University of Science and Technology
چکیده
The performance of a new generation of miniaturized thrusters for micro-satellites, and miniaturized power systems being developed to replace batteries, depends very strongly on the efficiency and the power density of their sub-millimeter to millimeter-scale combustors. Combustion in micro-scale combustors is an emerging, fast-growing research field. One of the important parameters in the combustion phenomena of micro- combustor is the heat transfer from the wall to its surrounding. This effect has been studied by some researchers. Recently, Daou and Matalon [1,2] investigated the effects of velocity, heat loss to the structure and passage width on premixed flames propagating in channels with constant-temperature walls. They showed that burning rate decreased as the heat transfer coefficient between the wall and the environment increased. Ronney [3] derived a model that used a perfectly stirred reactor to study non-adiabatic combustion in heat-recirculating combustors where heat from the post-flame region is transferred upstream to pre-heat the incoming reactants. This work showed that streamwise heat conduction within the structure of the combustor is a dominating effect at the microscale. Recent analytical and numerical work by Leach et al. [4] demonstrated similar effects in micro-channels.In the present study, one-dimensional and two-dimensional analytical simulation is carried out in order to show the significant impact of the heat transfer in the micro-combustor and consequently the variation of some important parameters in the heat transfer phenomena such as Peclet and Nusselt numbers is illustrated in the figuresکلیدواژه ها
مقالات مرتبط جدید
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.