化学反应速率 meaning in English
chemical reaction rate
Examples
- First , according to power chemical theory and definition of chemical reaction speed , it is analyzed by qualitative and quantitative analysis method that relation of consistency of chemical reaction resultant , time and temperature by basis principle analyze method and differential equation of reaction rate
摘要根据化学动力学理论，由化学反应速率的定义，利用机理分析法以及反应速率微分方程，对化学反应的生成物浓度与时间、温度的关系进行了定性、定量分析。 - Upon the foundation of contracted - ball , function equations of conversion rates of grains and time are deduced . it is brought forward that the conversion rates of grains rely on reaction velocity at interface and diffusion velocity in reacted layer and at the same time relate to reaction process
建立了粉粒反应的缩球模型，推导了颗粒反应转换率随时间的变化规律，提出了颗粒反应转换率取决于界面化学反应速率和已反应层内的扩散速率两个因素并与反应进程有关。 - As to the simulation , three - dimensional n - s equations and two - phase flow model , in which the liquid toluene spray as discrete particles was considered , were employed to describe the turbulent combustion processes in the combustion chamber . the mass and energy transfer between the two phases were calculated by the droplet evaporation model , and the arrehnius model was used to obtain the gas chemical reaction rate . the details of 3d flow field , the distributions of temperature and compounds were obtained by solving the equations
数值仿真方面,应用三维湍流n - s方程以及颗粒轨道模型描述了激光器燃烧室内部的喷雾两相燃烧流动过程,两相之间的质量、能量交换由液滴蒸发模型计算,气相化学反应速率由arrhnius公式计算,通过耦合求解气液两相模型方程,模拟了燃烧室三维流场,得到了燃烧室内的温度和组分浓度分布。 - Based on the analysis of gas - solid multiphase catalytic reaction , the chemical reaction model is established . when the reaction is controlled by the chemical dynamic , the reaction rate is introduced by consideration of the adsorption and desorption effects . when the reaction is controlled by mass transfer , the diffusion coefficient is established which can present the flow rate increases in small reynolds domain ; for the internal diffusion , the internal diffusion coefficient is derived , and then the internal diffusion is coupled with chemical reaction to represent the phenomenon that the diffusion and the chemical reaction occur cocurrently
本文在考虑催化转化器载体内发生的传热传质现象的基础上,建立了催化转化器的一维单孔道和三维多孔道传热传质模型;在分析载体内以气-固多相催化反应为特点的工作机理的基础上,建立了催化转化器的化学反应模型:当催化转化处于化学动力学控制区时,引入了考虑吸附、表面反应和脱附的表面化学反应速率公式,当催化转化处于质量输运控制区时,引入了决定外扩散能力的扩散系数公式和和决定内扩散速率的内扩散系数公式,并与化学反应速率相耦合,得出由扩散过程决定的化学反应速率公式。 - Ebu - arrehenius and second - moment turbulent combustion model are used to determine the reaction rate . to consider the influence of heat radiation on the gas temperature and wall temperature , the six flux model is applied to predictions of heat flux distributions . the discretization of governing equations on a non - staggered grid system is performed by hybrid scheme over the control volume , and discretization equations are solved with simple algorithm
利用椭圆型微分方程法和区域法生成三维贴体网格,文中数学模型有紊流模型、紊流燃烧模型和辐射模型,采用k -双方程模型来预估紊流特性, ebu - arrehenius和二阶矩紊流燃烧模型来估算化学反应速率,六通量辐射模型预估辐射通量,以便考虑热辐射对壁温和气流温度的影响。