数学模型计算 meaning in English
mathematical-model calculation
Examples
- Based on the in - situ measured data of water depth and results of physical model tests and mathematic model calculation , the influencing factors on the sediment deposition in the wharf apron after construction of wharfs are analyzed taking the wharfs in waigaoqiao port in the yangtze river estuary as an example
以长江口外高桥港区码头?例，根据现场实测水深资料， ?结合物理模型试验及数学模型计算的结果，分析建码头后影响码头前沿泥沙回淤的因素。 - The third chapter is the highlight of the text which focuses on the analysis of the classical colliding case at the " crossing situation " , calculating the distance between two vessels in the state of " involving risk of collision " , approaching a " close - quarters situation " and the " immediate danger situation " through the mathematical model , the thesis sums up the lessons and the prevention of the colliding accidents in every stage at the " crossing situation " by combining with the qualitative analysis , and puts forth a series of methods for avoiding collision aim at three different patterns at the " crossing situation "
包括三个阶段计算临界值数学模型的建立。第三篇是本文的重点，主要对典型交叉相遇碰撞事故进行了分析。通过相应的数学模型计算出两船碰撞危险形成时机，紧迫局面与紧迫危险形成时的两船距离，结合定性分析来总结每一交叉态势碰撞事故的教训与预防，并提出了一系列针对三种不同交叉态势的不同避碰方法。 - Last , two schemes have been put forwarded for the calculation of initial conditions in mathematic model . for the first scheme , the initial conditions are calculated through one - dimensional mathematic model by the frequency combination of rising and falling tides . for the second scheme , the initial conditions are obtained from measured data
工程建设影响数学模型计算边界条件分两方面，一方面由涨、落潮频摘要率组合分析，通过一维数学模型计算，给出非常不利组合的设计边界条件，一方面由实测典型年给出实际发生情况的边界条件。 - By means of the orbit dynamics theory and other knowledge , author established mathematical model related to collision forecast , including space object orbit confirming model , space objects relative movement model , dangerous object distinguishing model and space object collision geometry relation model , etc . according to the mathematic model , author calculated the relative distance transformation rule along with time between the spacecraft and dangerous debris and established early warning rule
依据航天动力学理论和其他知识,建立了碰撞预警相关的数学模型,包括空间目标轨道确定数学模型、空间物体相对运动数学模型、危险物体判定准则数学模型和空间物体碰撞几何关系数学模型等,根据数学模型计算航天器和危险目标的相对距离随时间变化规律,设定了预警规则。 - Firstly , the performance is calculated at the design point of the ws - 9 aeroengine by using the numerical model established . secondly , after obtaining the performance coupling parameters , the steady - state performance of the non - designed points is caculated . third , respectively make the limitation of rotate speed of the high pressure rotor and low pressure rotor equal to corresponding parameters of designed point , after the data calculated compared with those of designed point and actual testing of the manufactory , the error is obtained
首先，用所建立的发动机数学模型计算了发动机在设计点的各项性能，第二，根据发动机各部件的耦合特性参数计算得到发动机在非设计点状态下的各项稳态性能，第三，分别设定限制高压转子转速和低压转子转速逼近设计点条件下对应的参数，将计算得到的性能数据与设计点性能进行了比较，并将非设计点的计算结果与生产试车过程实测的性能数据进行对比，给出了该稳态模型计算结果与实际试车数据的误差。