نتایج جستجو برای: plug flow

تعداد نتایج: 494904  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1378

هدف از این تحقیق رفع مشکل بالکینگ در سیستم cassbr است . در این پژوهش راکتور لجن فعالی از جنس شیشه در مقیاس آزمایشگاهی ساخته شد در این راکتور راهبندهایی به صورت ایستاده و آویزان به منظور ایجاد رژیم جریان نهرگونه(plug flow ) تعبیه گردید . به منظور بهبود عملکرد راکتور از بستر پلاستیکی در حوض هوادهی استفاده شد . رشد میکروبی در راکتور ترکیبی از دو نوع رشد معلق و چسبیده بود.

In this paper we examine the effect of mild stenosis on blood flow, in an irregular axisymmetric artery with oscillating pressure gradient. The Herschel-Bulkley fluid model has been utilized for this study. The combined influence of an asymmetric shape and surface irregularities of constriction has been explored in this computational study. An extensive quantitative analysis has been performed ...

Journal: :international journal of environmental research 0
m. adl bioenergy & biomaterials research group, college of biosystems engineering and food science, zhejiang university, no.388 yuhangtang lu, 310058 hangzhou, p.r. china, renewable energy dept., niroo research institute, tehran 14665, iran k.c. sheng bioenergy & biomaterials research group, college of biosystems engineering and food science, zhejiang university, no.388 yuhangtang lu, 310058 hangzhou, p.r. china y.h. xia bioenergy & biomaterials research group, college of biosystems engineering and food science, zhejiang university, no.388 yuhangtang lu, 310058 hangzhou, p.r. china a. gharibi university of shanghai for science and technology, 516 jungong rd, 200093 shanghai, china x. chen bioenergy & biomaterials research group, college of biosystems engineering and food science, zhejiang university, no.388 yuhangtang lu, 310058 hangzhou, p.r. china

plug-flow digesters with periodic loading mechanism are more enthusiastic than fully mechanized digestion plants for the majority of small or medium scale farms according to the costs and operational complexities. a dual-compartment plug-flow reactor equipped with a passive heating system was designed and experimentally operated by purpose of demonstrating a simple and low cost technology for h...

Afzal Ahmad Hayat Khan, Mansoor ul Hassan Shah Muhammad Imran Ahmad, Muhammad Younas

Alkaline hydrolysis of ethyl acetate is essentially an irreversible and second order reaction. Industrial importance of the reaction product, sodium acetate, necessitate for process improvement in terms of maximum conversion and economical usage of raw materials. Statistical design of experiments was utilized to enhance conversion in both batch and plug flow reactors.A full two level factor...

The influence of the plug shape on the performance of an aerospike nozzle thrust force is studied in different back pressure conditions. To generate smooth plug contours, Cubic B-Spline technique is employed. In the current research, basis functions are obtained using Deboor’s relation. The flow field around the aerospike nozzle is investigated implementing various shapes and the best of the ge...

2014
Yusuke Fuchiwaki Hidenori Nagai

Easy-to-use thermal cycling for performing rapid and small-volume DNA amplification on a single chip has attracted great interest in the area of rapid field detection of biological agents. For this purpose, as a more practical alternative to conventional continuous flow thermal cycling, liquid plug-flow thermal cycling utilizes a thermal gradient generated in a serpentine rectangular flow micro...

2017
Zhizhao Che Teck Neng Wong Nam-Trung Nguyen

Plug flow in microcapillaries or microchannels offers significant advantages for the development of microfluidic applications and recently triggers many interests and studies. Recirculation is formed within liquid plugs due to the presence of interfaces. This paper presents an analytical model to investigate the recirculation flow and the flow resistance in microcapillaries with circular cross ...

Journal: :JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 1975

Journal: :international journal of environmental research 2011
m. adl k.c. sheng y.h. xia a. gharibi x. chen

plug-flow digesters with periodic loading mechanism are more enthusiastic than fully mechanized digestion plants for the majority of small or medium scale farms according to the costs and operational complexities. a dual-compartment plug-flow reactor equipped with a passive heating system was designed and experimentally operated by purpose of demonstrating a simple and low cost technology for ...

2005
Marcello Onofri P. Sacher

This paper represents an overview of the activities carried out in the framework of RTO/AVT Working Group 10, Subgroup 1, dedicated to plug nozzle aerothermodynamics and performance. The subgroup worked out two main objectives: i) thorough understanding of the flow physics of plug nozzles trough literature review and recent experiments conducted in Europe and USA; ii) definition of CFD test cas...

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