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The Effects of Added Hydrogen to the Premixed of Methane and Air in a MEMS Channel | ||
Journal of Heat and Mass Transfer Research | ||
مقاله 72، دوره 7، شماره 1 - شماره پیاپی 13، مرداد 2020، صفحه 55-62 اصل مقاله (1.23 M) | ||
نوع مقاله: Full Length Research Article | ||
شناسه دیجیتال (DOI): 10.22075/jhmtr.2020.19271.1263 | ||
نویسنده | ||
Hamed Raissi* | ||
Department of Mechanical Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
تاریخ دریافت: 18 آذر 1398، تاریخ بازنگری: 28 فروردین 1399، تاریخ پذیرش: 31 فروردین 1399 | ||
چکیده | ||
In this paper, the effect of adding hydrogen to the composition of methane and air in a micro combustor is investigated by a three-dimensional numerical method. First, the results of the current study in determining the wall temperature of the micro combustion chamber are compared with those obtained from the experimental and numerical results of the previous research. By confirming the numerical solution of this study, the effect of adding hydrogen to the mixture of methane and air on the distribution of temperature, pressure and outlet velocity of the gases is calculated numerically. The numerical results show that increasing the percentage of hydrogen to the mixture of methane and air leads to nonlinear changes in the outlet velocity, pressure, and temperature. In addition, the results show that by increasing the percentage of hydrogen to 2.5% and 5%, the maximum outlet velocity of the gases and minimum temperature are produced in the micro combustor, respectively. | ||
کلیدواژهها | ||
MEMS؛ The mixture of methane and air؛ Hydrogen؛ Temperature؛ Pressure؛ Outlet velocity | ||
عنوان مقاله [English] | ||
اثرات افزودن هیدروژن به مخبوط متان و هوا در یک کانال ممز | ||
چکیده [English] | ||
در این مقاله، اثر افزودن گاز هیدروژن به مخلوط گازهای متان وهوا در یک محفظه احتراق میکرو با استفاده از روش عددی سه بعدی بررسی می شود. در ابتدا، نتایج پژوهش حاضر در تعیین دمای دیواره محفظه احتراق با نتایج تجربی و عددی پژوهش گذشته مقایسه می شود. با تائید درستی حل عددی پژوهش حاضر، تاثیر افزودن هیدروژن به مخلوط متان و هوا در توزیع دما، فشار و گازهای خروجی به صورت عددی بررسی می گردد. نتایج عددی نشان می دهد که افزایش درصد هیدروژن در مخلوط متان و هوا منجر به تغییرات غیر خطی در سرعت، فشار و دما می شود. به علاوه، نتایج نشان می دهد که افزایش درصد هیدروژن به 2.5% و 5% به ترتیب ماکسیمم سرعت گازهای خروجی و حداقل دما را در محفظه احتراق ایجاد می نماید | ||
کلیدواژهها [English] | ||
ممز, مخلوط متان و هوا, هیدروژن, دما, فشار, سرعت خروجی | ||
مراجع | ||
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