نتایج جستجو برای: computational fluid dynamic

تعداد نتایج: 849003  

Atapour, M., Sadeghian, B., Taherizadeh , A.,

Today, steel to aluminum joints are used to facilitate transportation and fuel consumption. These joints are applied from nuclear, aerospace and naval to automobile and kitchen industries. According to previous studies fusion welding processes are not suitable methods for these joints, solid-state welding, especially friction stir welding, is a proper way to use for these joints. However, using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1391

استفاده از تکنولوژی غشایی یکی از مناسب ترین روش ها برای فرآیند های جداسازی از جمله برای جداسازی گازها می باشد. جداسازی مخلوط گازها با هدف استحصال یک یا چند جزء از مخلوط انجام می گیرد که کاربردهای زیادی در مقیاس آزمایشگاهی و در مقیاس صنعتی دارد. استفاده از غشاها برای جداسازی گازها نسبت به دیگر روش های جداسازی گازها مانند جذب، جذب سطحی و عملیات برودتی مزایای فراوانی دارد، از جمله: مصرف انرژی کمتر...

An accurate description of the fluid flow and heat transfer within a Pressurized Water Reactor (PWR), for the safety analysis and reactor performance is always desirable. In this paper a mathematical model of the fundamental physical phenomena which are associated to a typical PWR is presented. The mathematical model governs the fluid dynamics in the reactor. Using commercial software CFX, a co...

Journal: :تحقیقات موتور 0
امید صمیمی ابیانه o. samimi abianeh سید مصطفی میرسلیم s.m. mirsalim احمد شفیعی ثابت a. shafiei sabet

gas motion within the cylinder is one of the major factors that control the combustion process in spark ignition engine. it also has significant impact on heat transfer. both the bulk gas motion and the turbulence characteristics of the flow are important and governing the overall behavior of the flow. an arrangement for obtaining a stratified charge, using port injection, is proposed for a cur...

Journal: :تحقیقات موتور 0
م. آوریما m. auriemma گ. کاپوتو g. caputo گ. والنتینو g. valentino جعفر زرین چنگ j. zarinchang

in this work, result of experimental investigation on interaction of fuel spray generated by a swirled type injector, with air motion in a prototype cylinder are presented. experiments were carried out by planar imaging and particle image velocimetry (piv) techniques in order to provide information about the spray structure evolution and instantaneous velocity distribution of air motion and fue...

Journal: :Aerospace Science and Technology 2021

With the advancement in electric propulsion systems, aircraft designers and manufacturers are no longer constrained to established configurations. Developments Vertical Take-off Landing (VTOL) have been seen recent times through design of modern tiltrotor aircraft, tiltwing concepts multi-rotor designs. The combination these developments allowed engineers propose designs which utilise vertical ...

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