Numerical Analysis of Foam Degradation and Gas Diffusion in Lost Foam Casting Process 消失模铸造中泡沫热解气体逸出的数值分析
Numerical simulation of the poisonous gas diffusion process around the buildings Wind-tunnel tests study for qualitative analysis of diffusion of toxic or pernicious gases in the atmosphere of an industrial complex 建筑环境中有害气体扩散及分布的分析工业区有毒有害气体扩散风洞试验研究
Furthermore, the unidirectional reduction experiments revealed that the gas diffusion through porous product layer is a rate-controlling process. 单一方向还原实验表明,气体在产物层孔隙的扩散对还原速度影响显著,是还原的控制步骤。
Effect of heavy gas of dangerous material in diffusion process 危险物泄漏扩散过程的重气效应
The model is divided into two parts which are LNG heavy gas diffusion and passive process. 模型分为两部分,LNG重气扩散阶段模型和被动扩散阶段模型。
Concentration distribution expression of gas diffusion, reaction process at limited distance in small diameter pipe containing solids, the relation of gas concentration, diffusion time and diffusion distance have been derived by the second Fick's low. 从费克第二定律出发,推导了气体在装有固体颗粒的小直径圆形管中有限扩散距离内扩散-反应过程的浓度分布表达式以及气体浓度与扩散时间和扩散距离的关系。
An intelligent numerical forecast on heavy gas diffusion process of hydrocarbon 智能化烃类重气泄散过程的数值预测
It shows that coal particle gas diffusion under the first kind boundary condition and uniform gas concentration within coal particles is a special instance or approximate process under the third kind boundary condition. 对解析解的分析表明,第一类边界条件下及煤粒内部浓度均匀一致条件下的扩散是第三类边界条件下的特例或近似过程。
Study on wind influence of wind on gas diffusion process during Gas Pipeline Leakage Emergency 风力对天然气管道泄漏后扩散过程的影响研究
( SiH4) ratio being 20, when the flow rate of the mixed gas is lower than and higher than 720 ml/ min, the major factor controlling film formation is the gas diffusion process and surface gas reaction, respectively; 当混合气体流量大于720ml/min时,则主要受表面气相反应过程控制;
Some mathematic models were proposed to explain above mentioned phenomena: ( 1) limiting current explained gas diffusion had become the control role in battery process, and the simulated curve fitted the realistic U/ I curve; 提出了几个数学模型来解释这些现象:(1)极限电流表明阴极气体扩散已成为电池过程的速率控制步骤,用我们的公式模拟得到的U/I曲线与实验曲线能较好地吻合;
The gas barrier property was improved through introducing PPC, which could slow down the diffusion rate of CO2, thus enhancing the nucleation of PLA foams and extending the transfer time of PLA/ PPC sample during the foaming process. 而PPC对气体的阻隔作用,可以减缓二氧化碳的扩散速率,增强泡孔成核作用,并延长PLA/PPC样品在釜压发泡过程中的转移时间。
The transport that gas into fracture network system from coal gas surface and primary pores t is diffusion process. when mining coal seam that containing gas, In conditions of coal seam discharging pressure, Existing the phenomenon that local gas produced gas gathered up float. 瓦斯气体从煤块表面和原生孔隙进入裂隙网络系统的输运是扩散过程,含瓦斯煤层开采时,在煤层卸压条件下,存在局部瓦斯聚集产生瓦斯升浮现象。