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Register a new userStudying the effect of insert position on wall pressure for steel barrel silo
دراسة تأثير توضع عنصر مدخل ضمن صومعة معدنية اسطوانية في توزع الضغط الناجم على جدارها
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البحث المتناول هو بحث تجريبي في الصوامع المعدنية الاسطوانية لدراسة تأثير توضع عنصر مدخل مقترح ضمن الصومعة في الضغط الناجم على جدارها، إِذ استعمل نموذج صومعة معدنية و نموذج عنصر مدخل بشكل مخروط علوي و جذع مخروط معكوس و استعملت الذرة العلفية في إجراء التجارب، و اختيرت عدة مستويات لقياس الضغط الناجم عن الجريان على جدار الصومعة و حلَِّلت النتائج و نُوقشت للوصول إلى علاقة رياضية لإيجاد الضغط الناتج عن التفريغ بوجود عنصر مدخل. أجريت التجارب في مخبر البيتون و مواد البناء في كلية الهندسة المدنية بجامعة دمشق. و بينت النتائج أن توضع العنصر المدخل ضمن القمع و أقرب ما يمكن إلى منطقة الانتقال من جسم الصومعة إلى القمع يسبب زيادة طفيفة في الضغط الناتج على جدار الصومعة، و هذا ما يبرر استعمال العنصر المدخل ضمن الصومعة لأنَّه يساعد على تسهيل جريان المادة المخزنة دون حدوث زيادة كبيرة في الضغط الديناميكي الناتج على الجدار.
The aim of this paper is to present a recent experimental investigation of the wall pressure distribution observed during the emptying of a modeling silo, with and without, inserts, for three different heights hi of the insert base above the hopper outlet. The experiments were carried out with corn, at the concrete lab. in faculty of civil engineering in Damascus university in Syria. The results show that the upper-cone with downer-cone trunk insert had a strong influence on the pressures in the silo.
References used
Rotter j.m (2001), " Guide For The Economic Design Of Circular Metal Silos“, Spon Press, London
Jintao Wu, Jiang Binbo, Jizhong Chen, Yongrong Yang (2008)." Multi-scale study of particle flow in silos“, Journal of advanced Powder Technology 20 (2009) pp.62-73
Carson J.W, Troxel T.J & Bengston K.E (2008). “ Scaling up solids handling processes and equipment: limits of theory and scale modeling”, in: Chen J.F, Ooi J.Y & Teng J.G, editors. "Structures and Granular Solids”, Taylor & Francis Group, London, UK
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The aim of this paper is to present a recent experimental investigation of the wall pressure distribution observed during the emptying of a modeling silo, with and without inserts for four different heights hi of the insert base above the hopper outl
et. The experiments were carried out with corn, at the concrete lab. in faculty of civil engineering in Damascus university in Syria. The results show that the upper-cone with downer- truncated cone insert had a strong influence on the pressures in the silo.
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