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   flow error 的翻译结果: 查询用时:0.171秒
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flow error
相关语句
  流量误差
     From the simulation with this model,the high accurate predicted pressure wave is obtained,and the mass flow error is less than 1% in all the possible cases,even the case of the simulation of combined MSEM system.
     计算实践表明,该模型在各种计算条件下,排气压力波预测精度较高,计算流量误差一般均小于1% ,而且计算稳定。
短句来源
  错误
     A method is also presented to further reduce the overhead caused by this signature function while guaranteeing a given delay for control flow error detection.
     还给出了在保证错误检测延迟一定的条件下进一步降低开销的方法 .
短句来源
  流量偏差
     The field test shows that the flow error calculated by simple heat exchanger model is within ±1.5% with the calibrated flow meter as comparing baseline.
     现场试验表明,以校验后的流量表为比较基准,简单换热器模型的计算流量偏差不大于±1.5%;
短句来源
  “flow error”译为未确定词的双语例句
     The practical function shows that the temperature error is in the range of ±5 degree centigrade and the flow error is in the range of ±5%.
     实际运行表明,试验台的温度控制误差范围不大于±5℃,流量控制误差范围为±5%.
短句来源
     By introducing an "active DSCC" field in DS beacon, IAPP enhancement protocol improves the management capability of network administrator, and enhances the role of DSC in handover process and query process. Thecombination of the fault DS beacon detection and DSC detection while handover and query occurring speeds up the invalid DSC detecting procedure. The detail flow, error recovery mechanism, and performance analysis are represented.
     提出了增强型IAPP协议,该协议改进了DS信标帧,增加了“激活的DSCC”域,提高了网络管理员对网络的控制能力,增强了DSC在切换过程、查询过程的作用,通过DS信标帧的检测和利用切换检测DSC的组合方式提高了对失效DSC的检测速度,并给出了具体的通信流程、详细的差错恢复机制和性能分析。
短句来源
     Program static detection, a method of information and data flow analysis for source program with PASCAL like language is presented,which is an effective method for decreasing program errors such as data flow error,infinitive program iteration,etc.
     采用类似PASCAL的语言,提出了一种以源程序为目标的信息流和数据流静态分析方法。
短句来源

 

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      flow error
    The cross-flow error in the one-dimensional spectra also becomes much less important in the dissipation range of the measured spectra.
          
    The cross-flow error and the error caused by the unsteady convection of the small-scale motions were evaluated for typical measurements.
          
    Expressions were developed to estimate the cross-flow error that occurs in the one-dimensional velocity spectra determined by applying Taylor's frozen field hypothesis to measurements with single- and cross-wire probes.
          
    Existing flow-based measurement tools use average per-flow error as the primary measure of accuracy.
          


    S-shaped inlet design is frequently adopted in modern aircraft. The flow through such an inlet undergoes severe changes as the inlet axis is much curved. Moreover, disturbances caused by fuselage and the inlet interact with each other so that the flow field is rather complicated. A simple uniform method may not give cost-effective results for the whole three-dimensional flow field of such a combination of the inlet and fuselage. Ref. [1] uses a mixed finite difference method to solve the above internal and external...

    S-shaped inlet design is frequently adopted in modern aircraft. The flow through such an inlet undergoes severe changes as the inlet axis is much curved. Moreover, disturbances caused by fuselage and the inlet interact with each other so that the flow field is rather complicated. A simple uniform method may not give cost-effective results for the whole three-dimensional flow field of such a combination of the inlet and fuselage. Ref. [1] uses a mixed finite difference method to solve the above internal and external flow problem in an orthogonal mesh. The geometrical complexity of the inlet-fuse- lage combination causes great difficulty in generating the appropriate mesh system and treating the boundary conditions, especially near the entrance of the inlet. The body boundary condition is usually satisfied near the body surface because the mesh is not body-fitted (a 3-D body-fitted mesh is rather difficult to generate and makes the governing equations and its solution more complex). This causes great mass flow error near the entrance of the inlet, where the duct wall is of the converging-diverging shape and has the great- est curvature. Ref. [2] provides a perturbation method to treat the internal flow of any slender ducts. While the method has proved to be very fast and accurate inside the inlet duct, it cannot cope with the flow through the con- verging-diverging duct next to the entrance either, because the "slender assumption" is violated thereabout. Considering that the finite element meth- od is extremely flexible in the choice of mesh systems and quite accurate in approximating boundary conditions, we come up with the idea to embed the finite element method into the finite difference and perturbation meth- ods in the above area. Thus, we form a hybrid method which can fully ex- ploit the advantages and eliminate the disadvantages of the three different methods. Finite element approximation to a nonlinear partial differential equa- tion leads to it set of nonlinear algebraic equations, which is generally solved by means of iteration. For a three-dimensional problem, a very large set of linear algebraic equations must be solved for each iteration. This re- quires tremendous amounts of computer memory and CPU time. Ref. [3] forms the finite element equations by using the Galerkin method and solves the nonlinear algebraic equations through a Newton-Raphson iteration. Ref. [5] uses a least-square method to deal with the nonlinearity, whereas Ref. [6] presents a line-relaxation method to solve two-dimensional problems. The present paper develops a three-dimensional finite element method which is based on the Galerkin formulation and uses a surface-relaxation iteration to solve the resulting nonlinear finite element equations. This greatly reduces the computer memory and CPU time. Moreover, the Seidal method of iter- ation is employed to speed up the convergence of the nonlinear iteration. The above method is easy to implement and we use it to do the embe- dded calculation in the troublesome converging-diverging area of the inlet next to the entrance, where the finite difference and perturbation methods in [1] and [2] fail to give accurate results. The finite element computation is carried out with the entrance boundary condition provided by the finite-difference method and the exit boundary condition provided by the perturbation method. Results obtained from the embedded calculation show that the surface-relaxation finite element method developed in this paper is of good accuracy and rate of convergence. It takes only 11~14 times of iteration for a converged solution. Although the present paper is only a preliminary attempt to combine the finite-element, finite- difference and perturbation methods, it is a success. The embedded calculations reduce the mass flow error from the 7% in [1], to a max- imum less than 2%, which is an evidence of great improvement in accuracy.

    S形进气道内外流场的计算对工程设计具有重大价值,本文用有限元素法计算了S形进气道内流场。以三维的速势方程作为控制方程,用Galerkin法形成有限元方程。把有限差分解和摄动法解作为边界条件,在靠近进气道进口一段区域内嵌入有限元素法求解,修正局部计算精度比较差的区域。本文提出了有限元方程求解中的面松弛改进迭代方法,以解决非线性迭代及三维有限元方程的求解问题,使得计算机的存贮量大大降低,并加快了收敛速度。成功地运用把摄动法、有限差分法和有限元素法结合起来计算流场的思想,求解了比较复杂的流场。用本文的方法得到了良好精度的收敛解,计算结果表明此方法对于计算三维问题是有效的。

    This paper introduces a watchdog timer withbandpass behavior,which issues reset or interrupt signals if the WDT pulses generated by the microcomputer have a period either too long or too short. It alsodiscusses program module partitioning and some verification mechanisms, besides execution time checking,each module has self--checking for the reasonablenessof results, the flow errors of module boundaries crossing, which is realized by assigning a flag at the entrypoint and matching the flag at the exit...

    This paper introduces a watchdog timer withbandpass behavior,which issues reset or interrupt signals if the WDT pulses generated by the microcomputer have a period either too long or too short. It alsodiscusses program module partitioning and some verification mechanisms, besides execution time checking,each module has self--checking for the reasonablenessof results, the flow errors of module boundaries crossing, which is realized by assigning a flag at the entrypoint and matching the flag at the exit point of themodule.

    本文介绍了一种具有带通特性的定时监视器,当微机发出的脉冲间隔过长或太短时它就会发出复位或中断信号。本文还讨论了程序块划分和查错方法,除了对运行时间核查之外,每个模块还对结果的合理性进行检查,并通过在模块的入口设立标志以及在出口进行比对来检查模块跨界运行的错误。

    This paper studies the flow errors by using high precision one dimensional unsteady flow model to simulate eight-cylinder middle speed diesel engines and presents effective measures to reduce flow erros. The result is that the flow is basically balanced when using the simulation program to compute eight-cylinder middle speed disesel engines and the flow errors are within 2%.

    本文对高精度一维非定常流模型计算8缸中速机中的流量误差进行了研究,并提出了减小流量误差的有效措施,使性能模拟计算程序在计算8缸中速机性能时基本上达到流量平衡,流量误差在2%以内。

     
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