نتایج جستجو برای: computational fluids dynamic cfd

تعداد نتایج: 701036  

2007
Z. KHATIR J. W. Watterson

Abstract. Numerical investigations of fluid structure interaction between unsteady flow and vibrating liner in a combustion chamber are undertaken. The computational study consist of two approaches. Firstly, a partioned procedure consists of coupling the LES code AVBP for combustion modelling with the FEM code CaluliX for structural dynamic analysis. The CFD code CFX together with the FEM Ansys...

Journal: :journal of mining and environment 2013
akbar farzanegan morteza gholami m. h. rahimian

dense medium cyclone is a high capacity device that is widely used in coal preparation. it is simple in design but the swirling turbulent flow, the presence of medium and coal with different density and size fraction and the presence of the air-core make the flow pattern in dmcs complex. in this article the flow pattern simulation of dmc is performed with computational fluid dynamics and fluent...

Journal: :Energies 2021

This paper wants to investigate the effects of eco-friendly fluids on thermo-fluid-dynamic performance external gear pumps in order provide a first response increasingly urgent demands green economy. A computational fluid dynamics (CFD) approach based overset mesh technique was developed for simulation full 3D geometry an industrial pump, including all characteristic leakages between components...

ژورنال: فرآیند نو 2013
مهدی امرائی ناصر ثقه الاسلامی

استفاده از تکنولوژی غشایی یکی از مناسب‌ترین روش‌ها برای فرآیند‌های جداسازی از جمله برای جداسازی گازها می‌باشد. با توجه به وقت و هزینه‌های زیاد مطالعات آزمایشگاهی، دینامیک سیالات محاسباتی[1] می‌تواند پیش بینی خوبی از رفتار سیال بدون انجام آزمایش داشته باشد. در این پژوهش، فرآیند جداسازی مخلوط گازی هیدروژن و نیتروژن توسط غشاء پالادیم-نقره بر پایه سرامیکی در یک مدول لوله‌ای تو...

3D modeling of Pd/α-Al2O3 hollow fiber membrane by using computational fluid dynamic for hydrogen separation from H2/N2 mixture was considered in steady and unsteady states by using the concept of characteristic time. Characteristic time concept could help us to design and calculate surface to volume ratio and membrane thickness, and adjust the feed conditions. The contribution of resistance be...

ژورنال: مهندسی دریا 2023

Prediction of a ship’s trajectory during a maneuvering motion is so important. In this study, the acceleration maneuver for a twin-screw vessel is directly investigated using computational fluid dynamic (CFD) environment and unsteady RANS (Reynolds Averaged Navier-Stokes) solver. For this purpose, the self-propulsion and acceleration simulations with hull and propeller interaction for the well-...

2002
R. Mittal V. Seshadri S. E. Sarma H. S. Udaykumar

This paper describes the application of a new and unconventional numerical method for computational modeling of fluidic micro-handling processes. The key requirement for modeling such processes is the ability to simulate flows with large number of complex shaped moving objects. Conventional body-conformal computational fluid dynamic (CFD) methods are not well suited for simulating such flows an...

Journal: :journal of computational applied mechanics 0
ali lashkaripour department of life science engineering, university of tehran, tehran, iran ali abouei mehrizi department of life science engineering, university of tehran, tehran, iran mohamadreza rasouli department of life science engineering, university of tehran, tehran, iran masoud goharimanesh mechanical engineering department, ferdowsi university of mashhad, mashhad, iran

microfluidic flow focusing devices have been utilized for droplet generation on account of its superior control over droplet size. droplet based microfluidics addressed many scientific issues by providing a novel technological platform for applications such as biology, pharmaceutical industry, biomedical studies and drug delivery. this study numerically investigated the droplet generation proce...

Journal: :Advanced drug delivery reviews 2012
William Wong David F Fletcher Daniela Traini Hak-Kim Chan Paul M Young

Computational Fluid Dynamics (CFD) and Discrete Element Modelling (DEM) studies relevant to inhaled drug delivery are reviewed. CFD is widely used in device design to determine airflow patterns and turbulence levels. CFD is also used to simulate particles and droplets, which are subjected to various forces, turbulence and wall interactions. These studies can now be performed routinely because o...

Journal: :Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 2022

Stirling engine as an external combustion with high efficiencies and able to use any types of heat source is the best candidate recover waste exhausted gas by converting it into power. Thus, in this study was introduced evaluate possibility recovering from biomass produce For reason, Computational Fluid Dynamic (CFD) simulation test performed design initial computational model for low temperatu...

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