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- Phase field crystal model 晶体相场模型
- This paper is to build mathematic model of aluminum solidification microstructure simulation by the phase field method and study the influence of disturbing on dendrite growth. 对研究铝金属微观组织模拟相场法技术的数学模型及扰动对枝晶生长的影响进行了研究;
- In recent years, phase field model(PFM) of alloy solidification based on solute trapping and solute drag was introduced as a powerful tool to simulate the process of solidification. 近年来发展起来的PFM模型根据“溶质捕捉”和“溶质牵引”两种机制对金属及合金快速凝固过程进行数学描述及模拟,较好地反映了金属凝固的物理本质。
- In this paper,the physic nature,numerical computation methods of phase field model is evaluated;the advances of phase field simulation on grain growth are reviewed.The main problem and the futu... 对相场模型的基本原理、数值计算方法以及在晶粒长大模拟中的研究进展进行了综述,提出了相场模型在微观组织模拟中存在的主要问题以及今后的发展方向。
- The phase field method is proposed based on the general Ginzburg-Landau theory of phase transitions. 相场方法不需要跟踪固液界面,因此在模拟枝晶生长方面有独特的优势。
- We prepared a 2D steel/air system phononic crystal model based on the Bragg reflection mechanism. The crystal lattice constant has the same size as the sound wavelength,and the struc-ture can be modulated in two directions. 基于布拉格反射机理,自行制备了晶格常数同声波波长同数量级的二维钢/空气体系声子晶体结构模型,该模型具有双向可调性。
- This paper discusses the characteristics of continuous and microscopic phase field dynamics theory on describing phase transformation of alloys. 讨论了连续体相场动力学与微观相场动力学理论在描述合金相变方面各自的特点。
- This article described the crystal model of anhydrous sodium sulfate in DTB crystallizer. 论述了用DTB型结晶器结晶硫酸钠结晶模型。
- The growth of aluminum solidification dendrite has been simulated under disturbed and undisturbed condition, which based on the phase field method. 在相场法数学模型基础上,对有扰动和无扰动情况下的铝金属凝固枝晶生长进行了模拟;
- Wang ambled onto a stage with four much older DaimlerChrysler executives in dark suits to accept a crystal model of the keys to a silver Maybach that had already been delivered to his home. 在北京汽车展的开幕当天,王先生缓步走上展台,与4位戴姆勒-克莱斯勒公司的高管并肩,并接过汽车钥匙的水晶模型。
- Based on entropy increase function, we has derived the phase field controlling equations which are thermodynamical consistent. 该模型以熵增加函数为基础,通过熵增加函数推导出热力学一致性的相场控制方程。
- The entropy increase function,we has derived the phase field controlling equations which are thermodynamical consistent. 该模型以熵增加函数为基础,通过熵增加函数推导出热力学一致性的相场控制方程。
- The recent trends of microstructure simulation were also proposed, such as coupling phase diagram calculation and Phase Field Methods. 此外,介绍了显微组织模拟研究方面的最新动态,包括相图计算和相场法的应用。
- You can also Phase field Tripods/Eradicator Hexapod to escape death or you can use it to crush over a lot of tier 1 &2 units without losing the tripod or Eradicator Hexapod. 你也可以把相场用在三脚/六脚上来逃避死亡或是让你可以在碾压1,2级单位是,不用损失任何单位。
- The crystal structures of some high-crystallinity products are refined by the X-ray diffraction Rietveld refinement method, their crystal models are upbuilt. 选取高结晶度的类水滑石材料进行X射线粉末衍射Rietveld结构精修,建立了晶体结构模型。
- Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh. 相场方法不需要跟踪固液界面,因此在模拟枝晶生长方面有独特的优势。
- Two principles of the phase field method are introduced, and the application of the phase field method for numerical simulation of solidification microstructure is expatiated. 介绍了相场方法的两种基本原理,阐述了相场方法在金属凝固过程微观组织形成模拟中的应用情况。
- Beside fractional crystallization model,liquid immiscibility of Fluorine-rich granite magma is an important mechanism to form pegmatite and pegmatite type deposit. 除了结晶分异模式外,富氟花岗岩浆液态不混溶作用也是伟晶岩成岩成矿的重要机制。
- The effect of anisotropy of grain boundary energy on the kinetic of grain growth is simulated by phase field method,in which a time-dependent misorientation in grain boundary is introduced. 引入与时间有关的取向错配场变量,模拟了晶界能各向异性条件下晶粒长大的演化行为。模拟结果表明,与晶界能各向同性系统相比,随演化时间的延长,晶界能各向异性延迟晶粒的生长,使得晶粒的平均面积呈非线性变化;
- A technique for measuring phase field produced displacement under impact loading using digital speckle pattern interferometry (DSPI) with combining the digital subtraction and add mode is presented. 在撞击载荷下的数字散斑干涉法(DSPI)中,本文联合应用加法和减法两种模式提出了位相测试技术。