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近似模型
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  approximate model
    An comparative experimental investigation of the helical baffles heat exchenger and the natured heat exchanger has leen finished for the water system. The approximate model of convection heat transfer coefficient has been reported according to the experimental results.
    以新型的螺旋折流板换热器同普通的垂直折流板换热器,在水系统下进行了对比实验研究,并对实验数据进行了关联,得到了螺旋折流板换热器壳程对流传热系数的近似模型
短句来源
    Based on degraded and approximate model of main steam pressure and linear quadratic optimal control theory, the LQ sub-optimal regulation strategy is presented.
    基于主蒸汽压力降阶近似模型和二次型最优控制原理,给出了主蒸汽压力的LQ次优调节策略。
短句来源
    An approximate model of transmission for small angular displacement of the links is obtained by making use of Lagrange's equation.
    当连杆转动角均为微量时采用拉格朗日方程得到传动机构近似模型
短句来源
    The dynamic model of the linkage is established by Kane’s methods. The approximate model of the linkage with all angular rotation of the links being small is developed using Lagrange’s equation.
    用凯恩方法建立连杆机构动力学模型,当连杆转动角均为微量时采用拉格朗日方程得到连杆机构近似模型
短句来源
    It is analysised that the approximate model is applied to describe the translation of both the valve stem and the piston rod and the rotation of one link with comparative accuracy, but not to explain the swing of two other links.
    研究表明,近似模型能比较准确地描述门杆与活塞杆的平动和一个连杆的转动,但不能反映另外二个连杆的摆动变化。
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  “近似模型”译为未确定词的双语例句
    APPROXIMATE INTEGRAL MODEL WITH ARTIFICIAL NEURAL NETWORK FOR HEAT EXCHANGERS
    结合神经网络的换热器积分近似模型
短句来源
    Approximate Integral Model of Heat Exchangers Combining with Artificial Neural Networks
    结合神经网络的换热器积分近似模型
    AN APPROXIMATE ANALYTIC MODEL FOR FALLING LIQUID FILMS DOWN VERTICAL WAVY PLATES
    波纹壁面降膜过程的一种近似模型
短句来源
    The experimental results were also reported and compared with the theoretical calculations.
    文中还介绍了为验证理论计算公式精确可靠程度而进行的近似模型试验情况。
短句来源
    In order to improve predicting precision and increase computation speed of simulation for heat exchanger, a novel method is presented in this paper, in which an approximate integral model is used to simplify the original distributed parameter model and an artificial neural network is combined to reflect the nonlinear relations in the integral model.
    为解决换热器的分布参数模型存在的精度与计算代价之间难以调和的矛盾,本文提出了一种新的方法,即光用一个积分近似模型作为对原分布参数模型的简化,而仅对积分近似中某些非线性关系用神经网络来表达。
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  approximate model
On the basis of an approximate model of filtration with drainage washings of a soil layer with a water-impermeable base [1], shown schematically in Fig.
      
In [1], the present author investigated an approximate model of two-dimensional flow in the case of leaching of soil in the presence of an impermeable layer when the depression curve is replaced by a fixed horizontal boundary.
      
An approximate model of the flow is constructed and an analytic solution is obtained for the location of the boundary of the multicycle jet.
      
A brief description is given of the approximate model for the calculation of temperature fields, which simplifies the processing of experimental data
      
Theoretical models of heat transfer by radiation through a vapor gap under conditions of film boiling of liquid are treated, namely, a general wave model for a gap of arbitrary thickness and an approximate model of geometrical optics.
      
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. In this paper a theoretical calculation method of one-side cooling of flattened tube welded on a wall was obtained by calculation of cooling elements. The wall surface temperature can be calculated, the factors that effects the wall surface temperature were revealed, and how these factors effect on the wall surface temperature was showed. All of these provide a base of the engineering design. The experimental results were also reported and compared with the theoretical calculations. And then some of suggestion...

. In this paper a theoretical calculation method of one-side cooling of flattened tube welded on a wall was obtained by calculation of cooling elements. The wall surface temperature can be calculated, the factors that effects the wall surface temperature were revealed, and how these factors effect on the wall surface temperature was showed. All of these provide a base of the engineering design. The experimental results were also reported and compared with the theoretical calculations. And then some of suggestion about one-side cooling of flattened tube welded on a wall were proposed.

本文根据传热学的基本原理,采用冷却单元计算法推导得到了一套完整的关于扁圆管单面贴壁冷却方式的理论计算方法。用这套计算方法不但可以确定壁面的温度工况,而且揭示了影响壁温工况的各种因素及其影响关系,为设计计算提供了依据。文中还介绍了为验证理论计算公式精确可靠程度而进行的近似模型试验情况。最后就扁圆管单面贴壁冷却方式提出了几点初步看法。

A new method of modeling distributed parameter turbulent pipes by using modal approximation methodology was presented.Two kinds of modal approximation models for both hydraulic and adiabatic pneumatic turbulent pipes-the I R C and effective laminar flow modal approximation models were developed.Corroboration of models was given by simulated results of a single pipe after valve closure.The calculated results show a good agreement with those using method of characteristics including frequency dependent friction...

A new method of modeling distributed parameter turbulent pipes by using modal approximation methodology was presented.Two kinds of modal approximation models for both hydraulic and adiabatic pneumatic turbulent pipes-the I R C and effective laminar flow modal approximation models were developed.Corroboration of models was given by simulated results of a single pipe after valve closure.The calculated results show a good agreement with those using method of characteristics including frequency dependent friction

提出了用模态近似法建立分布参数湍流管道的集中参数近似模型的新方法,发展了适用于水力和绝热气体湍流管道的两种模态近似模型:I-R-C模态和等效层流模型。模型中考虑了频率相关摩擦损失。利用单根管道阀门关断问题的仿真计算对本文的模型进行了验证,计算结果与考虑频率相关摩擦损失的特征线方法的计算结果十分吻合。

An comparative experimental investigation of the helical baffles heat exchenger and the natured heat exchanger has leen finished for the water system. The approximate model of convection heat transfer coefficient has been reported according to the experimental results. The convection heat transfer coefficient in unit pressure drop of the helical baffles heat exchanger is 2.4 times of the natural heat exchanger. This indicates that the helical baffles heat exchanger is a more reasonable new model heat exchanger...

An comparative experimental investigation of the helical baffles heat exchenger and the natured heat exchanger has leen finished for the water system. The approximate model of convection heat transfer coefficient has been reported according to the experimental results. The convection heat transfer coefficient in unit pressure drop of the helical baffles heat exchanger is 2.4 times of the natural heat exchanger. This indicates that the helical baffles heat exchanger is a more reasonable new model heat exchanger and has a wide deueloping and appling prospect.

以新型的螺旋折流板换热器同普通的垂直折流板换热器,在水系统下进行了对比实验研究,并对实验数据进行了关联,得到了螺旋折流板换热器壳程对流传热系数的近似模型。实验结果表明,对水这样的低粘度流体,相同流量下单位压降的壳程对流传热系数,螺旋折流板约为普通折流板的2.4倍,显示螺旋折流板换热器是一种结构更加合理的新型换热设备,其优良的结构特点决定了其优良的传热性能,具有广阔的开发应用前景。

 
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