نتایج جستجو برای: ltne model
تعداد نتایج: 2104305 فیلتر نتایج به سال:
اگرکیفیت معلم کلاس برای بهبودیادگیری دانش آموزحیاتی است،پس کیفیت اساتیددانشجو-معلمان، یابه عبارتی معلمین معلمان نیزبرای پیشرفت آموزش بسیارمهم واساسی است.ناگفته پیداست که یک سیستم مناسب آموزش معلمان ،معلمین با کیفیتی را تربیت خواهدکرد.که این کار منجربه داشتن مدارس خوب، ودرنتیجه نیروی کارماهرتروشهروندبهتربرای جامعه خواهدشد. اساتیددانشجو-معلمان نقشی بسیارمهم را در سیستم اموزش معلمان درسراسرجهان ای...
Latent heat storage in a shell-tube is promising method to store excessive solar for later use. The unit filled with phase change material PCM combined high porosity anisotropic copper metal foam (FM) of thermal conductivity. PCM-MF composite was modeled as an porous medium. Then, two-heat equation mathematical model, local non-equilibrium approach LTNE, adopted consider the effects difference ...
The EGS (enhanced geothermal system), particularly the multi-fracture EGS, is expected to be a key method effectively develop deep resource. accurate modeling of flow and heat transfer in an reservoir, fracture, challenging. Therefore, improved model considering LTNE (local thermal non-equilibrium) non-Darcy rough fracture proposed. Then, temperature fields matrix are comprehensively investigat...
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
Monopropellant thruster is one of the most propulsion system types developed in space industry. This uses a single type propellant that reacts porous medium catalytic packed bed to generate thrust form hot gases. The last decade, green hydrogen peroxide (H2O2), also known as High Test Peroxide (HTP), thanks its low cost and easy store liquid, used an alternative solution hydrazine which very to...
The current research expounds numerical investigation of key parameters effects, namely porosity ( ε= 0.4, 0.6, 0.7 and 0.8), Reynolds number Re = 100, 200, 400 600) Eckert Ec 0, 1, 5 10) on the forced convective laminar flow heat transfer through a horizontal porous channel filled with metal foam structure impregnated paraffin as phase change material (PCM). Darcy-Brinkman-Forchheimer model un...
In present work forced convection flow in a channel partly filled with a porous media under asymmetric heat flux boundary condition has been investigated. The porous material is distributed on the one wall. Darcy–Brinkman and LTNE model have been assumed in order to solve momentum and energy equations, respectively. Fully developed conditions are considered in order to solve velocity and the te...
This numerical study aims to enhance the heat transfer efficiency by dissipating Emitted from electronic processors. A jet impingement technique is utilized with porous layer covering a metal fin as sink. Forced convection and normal (due buoyancy effect) are taken into consideration. The two equations model (Local Thermal Non-Equilibrium LTNE) employed describe energy of phases surface. Finite...
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