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Numerical investigation of the deflagration of turbulent premixed flames forairpremixed lpg and hydrogen in a semi-confinedobstructed compartment / Mahmoud Ashraf Abdelmohsen Elsayed ; Supervised Mohamed Ahmed Yehia , Hatem Omar Haridy

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Mahmoud Ashraf Abdelmohsen Elsayed , 2020Description: 151 P. : charts , maps ; 30cmOther title:
  • التحقيق العددى لأشتعال كلا من لهب غاز البترول المسال وغاز الهيدروجين المضطرب سابق الخلط مع الهواء داخل غرفة مقيدة شبه محدودة [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering Summary: This study presents a numerical study of the transient events following the ignition of a flammable mixture of air premixed with hydrogen or LPG at different equivalence ratios inside a small semi-confined compartment obstructed with various obstacles to induce different levels of turbulence. The compartment and the data used for validation are obtained from previous experimental work that was carried out in Sydney University, Australia.The configuration of the rig is a square cross-section of 50 x 50 with length of 250 mm made of Perspex to allow laser diagnosis to detect the position of the flame front at different time steps. The numerical facility used is an in-house code named "PUFFIN" developed by a collaborative group in Loughborough University. This numerical tool applies large eddy simulation techniques with the turbulence treated using a dynamic Smagornisky model and the combustion is treated by a modified dynamic flame-let surface density model
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2020.Ma.N (Browse shelf(Opens below)) Not for loan 01010110082782000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.13.11.M.Sc.2020.Ma.N (Browse shelf(Opens below)) 82782.CD Not for loan 01020110082782000

Thesis (M.Sc.) - Cairo University - Faculty of Engineering - Department of Mechanical Power Engineering

This study presents a numerical study of the transient events following the ignition of a flammable mixture of air premixed with hydrogen or LPG at different equivalence ratios inside a small semi-confined compartment obstructed with various obstacles to induce different levels of turbulence. The compartment and the data used for validation are obtained from previous experimental work that was carried out in Sydney University, Australia.The configuration of the rig is a square cross-section of 50 x 50 with length of 250 mm made of Perspex to allow laser diagnosis to detect the position of the flame front at different time steps. The numerical facility used is an in-house code named "PUFFIN" developed by a collaborative group in Loughborough University. This numerical tool applies large eddy simulation techniques with the turbulence treated using a dynamic Smagornisky model and the combustion is treated by a modified dynamic flame-let surface density model

Issued also as CD

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