Etude parametrique de la combustion du methane enrichi a l’hydrogene

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

0aeb13c7-e2ac-46cd-82da-448c00a80898

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل دكتوراة

نوع الملف

pdf image

أسماء الملفات

0aeb13c7-e2ac-46cd-82da-448c00a80898_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Lotfi Ziani","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Abla Chaker","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

French

المصدر والدورية

اسم المصدر

Etude parametrique de la combustion du methane enrichi a l’hydrogene

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

Most of the energy produced and used in the world comes from fossil fuels. The combustionof these fuels cause the emission of significant quantities of greenhouse gases as well asdifferent types of pollutants such as CO, NOx and other pollutant particles. The addition ofhydrogen in hydrocarbons appears to be a promising way to reduce these emissions. Indeed, ithas been demonstrated by several authors that the addition of certain quantities of hydrogen inhydrocarbons improves combustion performance (improves flame stability, pollution, etc). Ashydrogen is a good energy carrier, its addition to hydrocarbons could be a good way for theintroduction of renewable energies.In this work, we focus on the effect of hydrogen on two turbulent diffusion flames methane.The first flame is obtained with a burner coaxial configuration were the jet of fuel is in thecenter. The second flame is produced by a coaxial burner with a pilot flame. The role of thepilot flame is to maintain the flame. For the first configuration we compared the performanceof three turbulence models (the standard k-ε, the RSM model and the modified k-ε) and theperformance of two detailed kinetic schemes, the GRI 2.11 and the GRI 3. We do vary thevolumetric fraction of hydrogen from 0 to 50% for this flame. Attention was given, here, tothe hydrogen effect on the flame structure, the heat power produced, as well as to the effect onthe production of polluting gases such as nitric oxide and carbon monoxide.For second case, we simultaneously vary the initial temperature, the ambient pressure and thehydrogen fraction. The initial temperature is varied from 290 to 600 K, the pressure of 1 to 10atm and hydrogen volumetric fraction of hydrogen from 10 to 30%.We have noted that the addition of hydrogen in both cases causes a reduction of the radial andaxial expansion of the flame with reduction of the reaction zone; It also causes an increase ofthe combustion temperature, which induced an increase in nitric oxide emissions.The increase in pressure causes a narrowing of the flame and reduces the effect of hydrogen.Finally, increasing the initial temperature causes an increase in the fuel consumption rate.

إشراف وإعداد

الإشراف

Abla Chaker

الإعداد

Lotfi Ziani

الاقتباسات الببليوغرافية