动量守恒方程 meaning in English
conservation-of-momentum equation
equation for conservation of momentum
momentum conservation equation
Examples
- The equations of mass conservation , momentum conservation and energy conservation of gas , liquid and two - phase flow are the basement of the program
程序用汽相、液相以及两相流的质量守恒方程、动量守恒方程和能量守恒方程等基本方程来建立数学模型。 - The procedure to modify the sss code is as follow : at first the hom eos ( equation of state ) is replaced by the sesame eos , secondly the magnetic force is added to the momentum equation , the ohmic heating rate is added to the energy conservation equation
对sss程序改造过程大致如下：首先以sesame数据库物态方程替换sss程序原有的物态方程；其次在动量守恒方程中加上洛仑兹力项，在能量守恒方程中加上单位质量焦耳加热项，通过麦克斯韦方程推导出磁扩散方程。 - Second , the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model , which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system . third , the normal running process is analyzed and calculated by means of rational matching theory , which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator . fourth , the simulation software with dynamic characteristic is designed , which can be applied to calculate thernio - parameter of cryogen , air humidity and frost thickness under different initial and boundary conditions , and to carry out dynamic simulation under conditions of dryness , wetness and frostiness , at the same time , to achieve detection and simulation at any stage from starting to stopping
本文的主要内容如下： 1 )对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2 )对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3 )对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4 )编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。 - In the studying of the dielectric recovery mechanism , the dielectric process of high - power repetitive gas switches was analyzed theoretically , the conditions of full recovery of dielectric capability , and some qualitative results were obtained . then , a dynamic mathematical model of the dielectric recovery process was made , and a group of equations , including mass conservation equation , momentum conservation equation , energy conservation equation and state equation , were built . also , a mathematical model of the dielectric recovery process of a axially - blown gas spark gap , and a group of simplified hydromechanical equations were made
在绝缘恢复机理研究中，首先对高功率重复气体火花开关绝缘恢复过程进行了理论分析，提出了开关绝缘强度完全恢复的判据，得到了一些定性结论；然后建立了一般吹气式气体火花开关绝缘恢复的动态数学模型，得到了包括质量守恒方程、动量守恒方程、能量守恒方程和状态方程等的一个完备方程组；建立了纵吹式气体开关绝缘恢复过程的数学模型，得到了一个简化流体力学方程组。 - Analysis is made on structure characteristics of the finned - tube , and analysis has been made on the special heat and mass transfer principle of every micro - unit under both dry and wet conditions . appropriate hypothesis is made and based on the energy , mass and momentum equivalent , the evaporator models of dynamic distributed parameters are set up . in addition , the gascooler and internal exchanger models of dynamic and distributed parameters , the throttling valve models and the compressor models are set up , too
本文的内容如下： 1对翅片管蒸发器的结构特点进行分析，选取适当的微元体，对于干、湿工况下每个微元分别进行传热传质分析，通过适当的假设，利用质量守恒方程、能量守恒方程和动量守恒方程建立了蒸发器的分布参数数学模型；对回热器划分微元建立了分布参数数学模型；对气体冷却器建立了分布参数数学模型；对压缩机建立了数学模型；建立了节流阀的数学模型，为系统仿真奠定了基础。