نتایج جستجو برای: injection time

تعداد نتایج: 2020665  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 0

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

Journal: :journal of modern processes in manufacturing and production 0
siavash sobhani department of mechanical engineering, najafabad branch, islamic azad university, isfahan, iran nathan jafarian jam department of mechanical engineering, najafabad branch, islamic azad university, isfahan, iran

injection molding is one of the most common processes which are used for manufacturing different plastic parts. this method includes 3 continuous steps: filling of the mold, cooling and driving the part out. a wide range of plastic and non-plastic materials can be used as raw material in this process. one of the most important advantages of this way of production is that it is very economic. in...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

in this work, a novel and fast method for direct analysis of volatile compounds (davc) of medicinal plants has been developed by holding a filament from different parts of a plant in the gc injection port. the extraction and analysis of volatile components of a small amount of plant were carried out in one-step without any sample preparation. after optimization of temperature, extraction time a...

Journal: :علوم و تکنولوژی پلیمر 0
محمدرضا عرفانیان سید محمد جوادی محمد مقیمان

the present work reports and discusses the results of a 3d simulation of the injection molding process of a rubber compound that includes the mold flling stage and  material curing, using the computer code is developed in “udf” part of the fluent 6.3 cae software. the data obtained from a rheometer (mdr 2000) is used to characterize the rubber material in order to fnd the cure model parameters ...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
a. tofangdarzade a. jalali

in this work, time domain analysis is used to solve adler’s equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. mathematical approach has been applied to fully describe the transient of frequency acquisition in injection-locked lc and ring oscillators considering their time-varying nature. then, the analysis is verified...

Journal: :iranian journal of oil and gas science and technology 0
yaser ahmadi m.s. student, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran mehdi hassanbeygi m.s. student, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran riyaz kharrat professor, department of petroleum engineering, tehran petroleum research center, petroleum university of technology, tehran, iran

in many reservoirs, after water flooding, a large volume of oil is still left behind. hot water injection is the most basic type of thermal recovery which increase recovery by improved sweep efficiency and thermal expansion of crude.in the present work, the effects of injection rate and the temperature of the injected water were surveyed by using core flooding apparatus. water flooding was perf...

Journal: :AIAA Journal 2021

No AccessTechnical NotesSwirl–Nozzle Interaction Experiments: Influence of Injection-Reservoir Pressure and Injection TimeLionel Hirschberg, Friedrich Bake, Karsten Knobloch Steven J. HulshoffLionel Hirschberg https://orcid.org/0000-0002-2732-6639German Aerospace Center, 10623 Berlin, Germany*Deutsches Zentrum für Luft- und Raumfahrt–Deutscher Akademischer Austauschdienst Postdoctoral Fellow, I...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1387

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