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| 1 | 2024铝合金热裂敏感性预测模型(英文)显示文摘对比研究Katgerman和Clyne-Davies预测热裂敏感性的理论模型。制备晶粒细化的和未细化的2024铝合金,凝固冷却速度为0.4-17.5°C/s。采用热分析检测枝晶搭接点和共晶反应温度,基于牛顿法测绘固相线和液相线以确定热裂敏感区。实验结果显示,2024铝合金中可能发生热裂的最敏感区域为在糊状区的最后阶段,Al_2CuMg金属间化合物作为共晶相形成的区域。另外,在熔铸过程中的高冷却速率下,两个模型具有较好的一致性;而在低至中等冷却速率下,Clyne-Davies模型预测热裂倾向更准确。 | M.H.GHONCHEH S.G.SHABESTARI A.ASGARI M.KARIMZADEH | 2018 | Transactions of Nonferrous Metals Society of China2018，28，5： | 3 |
| 2 | Application of Adomian decomposition method for micropolar flow in a porous channel显示文摘In this study the injective micropolar flow in a porous channel is investigated.The flow is driven by suction or injection on the channel walls,and the micropolar model is used to describe the working fluid.This problem is mapped into the system of nonlinear coupled differential equations by using Berman's similarity transformation.These are solved for large mass transfer via Adomian decomposition method(ADM).Also the numerical method is used for the validity of this analytical method and excellent agreement is observed between the solutions obtained from ADM and numerical results.Trusting this validity,effects of some other parameters are discussed.It can be seen that increasing in the value of N_(1) have different results in comparison with N_(2). | F.Shakeri Aski Seyed Jalal Nasirkhani E.Mohammadi A.Asgari | 2014 | Propulsion and Power Research2014，3，1： | 3 |
| 3 | Errata for the article“Application of Adomian decomposition method for micropolar flow in a porous channel”显示文摘In this paper,the errata for a published paper,titled“Application of Adomian decomposition method for micropolar flow in a porous channel,authored by F.Shakeri Aski,Seyed Jalal Nasirkhani,E.Mohammadian,A.Asgari,in the journal of Propulsion and Power Research 3(1)(2014)15-21”,were presented.Since micropolar flow in a porous channel attracts considerable research interest,it is necessary to correct the minor typo errors in the boundary conditions of the medium.This should be said that the typo errors have not affected the results because the correct boundary conditions have been applied in the written maple code.There is just a typo error in the written boundary conditions in the paper. | F.Shakeri Aski Seyed Jalal Nasirkhani E.Mohammadian A.Asgari | 2021 | Propulsion and Power Research2021，10，3： | 0 |
| 4 | Thermal energy storage inside the chamber with a brick wall using the phase change process of paraffinic materials:A numerical simulation显示文摘Phase change materials are one of the potential resources to replace fossil fuels in regards of supplying the energy of buildings.Basically,these materials absorb or release heat energy with the help of their latent heat.Phase change materials have low thermal conductivity and this makes it possible to use the physical properties of these materials in the tropical regions where the solar radiation is more direct and concentrated over a smaller area.In this theoretical work,an attempt has been made to study the melting process of these materials by applying constant heat flux and temperature.It was found that by increasing the thickness of phase change materials’layers,due to the melting,more thermal energy is stored.Simultaneously it reduces the penetration of excessive heat into the chamber,so that by increasing the thickness of paraffin materials up to 20 mm,the rate of temperature reduction reaches more than 18%.It was also recognized that increasing the values of constant input heat flux increases buoyancy effects.Increasing the Stefan number from 0.1 to 0.3,increases the temperature by 6%. | M.Javidan M.Asgari M.Gholinia M.Nozari A.Asgari D.D.Ganji | 2022 | Theoretical & Applied Mechanics Letters2022，12，3： | 0 |
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