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Register a new userExperimental Investigation of The Wall Pressure Distribution in a Barrel Silo with an Upper-cone with Downer- truncated cone Insert
دراسة تجريبية لتوزع الضغط الناتج على جدار صومعة اسطوانية باستعمال عنصر مدخل بشكل مخروط علوي و جذع مخروط متعاكسين
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Tishreen University ورقة بحثية
Publication date
2014
fields
Structural Engineering
and research's language is
العربية
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Shamra Editor
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يهدف هذا البحث إلى دراسة تأثير استعمال عنصر مدخل مقترح ضمن صومعة اسطوانية على الضغط الناتج على جدارها, حيث تم استعمال نموذج صومعة معدنية اسطوانية و نموذج عنصر مدخل بشكل مخروط علوي و جذع مخروط متعاكسين, و استعملت الذرة العلفية في إجراء التجارب, و اختيرت عدة مستويات على ارتفاع الصومعة لقياس الضغط الناتج على جدارها أثناء التفريغ. أجريت التجارب في مخبر البيتون و مواد البناء في كلية الهندسة المدنية بجامعة دمشق, و تم تحليل النتائج و مناقشتها و مقارنتها مع نتائج دراسات مرجعية سابقة, حيث بينت النتائج أن توضع العنصر المدخل المدروس عند منطقة الانتقال من القسم الاسطواني إلى القمع يسبب انخفاض في قيمة الضغط الناتج على جدار الصومعة مما يبرر استعمال العنصر المدخل بالشكل و التوضع المقترح ضمن الصومعة.
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 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- truncated cone insert had a strong influence on the pressures in the silo.
References used
SCHWEDES , J. Flow patterns. in: BROWN, C.J., NIELSEN, J. editors. Silo Fundamentals of theory, behaviour and design. E & FN Spon, London, 1998, 112- 117
ROTTER, J.M. Guide For The Economic Design Of Circular Metal Silos. Spon Press, London, 2001, 235
CARSON, J.W.; TROXEL, T.J .; BENGSTON K.E. 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, 2008
WO'JCIK, M., HARTL, J., OOI, J., ROTTER, J.M., DING, S., ENSTAD, G.G. Experimental Investigation of the Flow Pattern and Wall Pressure Distribution in a Silo with a Double-Cone Insert. WILEY-VCH Verlag GmbH & Co., PPSC, 24, 296-303
STRUSCH, J., SCHWEDES, J. Wall stress distributions in silos with inserts, and loads on inserts. in: BROWN, C.J., NIELSEN, J. Ed. Silo Fundamentals of theory, behaviour and design. E & FN Spon, London, 1998, 118-130
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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 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.
This paper presents an experimental investigation of the flow pattern and wall pressure due to the change of the opening discharge diameter in cylindrical silos. The experiments were performed on a
metal silo prototype using corn as a granular mater
ial. The silo prototype used in the study was built of a metallic cylinder, which can be opened longitudinally allowing the observation of the flow pattern
through a plexi-glass wall, and the wall pressure distribution was measured using a special granular pressure transducer. The present study revealed unexpected results to what might be expected through
current theoretical knowledge.
Introduction: Urinary tract infections are very common in childhood (especially under the age of 5 years) and because of the large number of complications resulting from it (renal failure – hypertension- kidney scarring) had to be diagnosed and early
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