查询词典 unsteady

According to heat load source of die cavity, temperature distribution gradient equations and heat flux equations and the peak value equations of temperature load at die cavity surface have been obtained with research of temperature distribution and transfer laws of die surface by unsteady heat transfer theory.

新闻摘要：根据锻模型腔热负荷来源，通过非稳态传热理论，分析研究了模具工作表面层的温度分布与传递规律，给出了型腔表面温度分布梯度和热流密度公式，并给出了锻模型腔表面的温度负荷峰值的计算公式。

By Using the 3 D unsteady state heat transfer equation,the heat convection and radiation between the checker and the gas which flows through the checker holes,and the heat conduction among the checker in the chamber of the hot blast stove were studied.

应用三维非稳态热量传输方程，对高炉热风炉在燃烧过程中蓄热室内格子砖与气体之间的对流和辐射传热，以及格子砖内部的导热过程进行了耦合求解得到了在燃烧期内格子砖及燃烧过程中燃烧废气的温度分布情况及其随时间的变化规

By using the 2-D unsteady state heat transfer equation,the heat convection and radiation between the checker,the gas flowing through the checker holes and the heat conduction among the checkers in the chamber of the hot blast stove were studied.

应用二维非稳态热量传输方程，对高炉热风炉蓄热室内格子砖与气体之间的对流和辐射传热，以及蓄热体内部的导热过程进行求解，分析热风炉的不同操作制度对热效率的影响。

3The heat transfer in the charging and discharging process are unsteady, and the heat transfer capability of the system will change against time, and the charging rate and discharging rate decreases gradually with time, as should be noticed in the design.

蓄冷和放冷过程都是非稳态传热过程，整个过程中系统的传热能力是不断变化的，蓄冷率和释冷率都是逐渐降低的，在蓄冷设计时应该注意到这点。

Unsteady conjugate numerical simulation results for the solar chimney prototype in Spain show that the soil has the effect of energy storage and can modulate the difference of output power of the solar chimney power plant system between day and night, and that the solar radiation intensity has a significant effect on the energy loss from the system which will increase with the increasing of the solar radiation, and that the canopy of the collector is the main part of energy loss through the system, with a heat-transfer rate per unit area about 10% the amount of the solar radiation.

以西班牙试验电站模型为例进行的非稳态耦合数值计算结果表明：土壤具有较强的蓄热作用且能很好调整系统昼夜发电峰谷差；太阳辐射强度对系统散热损失的影响相当显著，太阳辐射越强，散热量越大；集热棚的顶棚是系统散热损失的主要部件，散热热流密度约为太阳辐射的10%。

Unbalanced cut tobacco supply and demand between processing and manufacturing not only interrupted the operation of primary processing line or cigarette making machines, but also made cut tobacco quality unsteady.

大理卷烟厂引进的HAUNI制丝线由于烟丝调度的局限性，存在着烟丝供求关系不平衡问题，造成不必要的制丝线待柜停机或卷烟机待料停机，烟丝质量也易出现波动。

While the stable viscous incompressible flow cross through a single circular cylinder, it always result in the separated streaming and unsteady vortex streaming generated behind the circular cylinder.

当均匀稳态不可压缩黏性流体通过单一圆柱时，常在圆柱两侧产生分离流动，并在后方形成非稳态尾流。

Based on mathematical analysis of unsteady-state diffusion process in diaphragm diffusion cell, a steady-state flow technique for measuring effective diffusivity in gels has been developed.

一、借鉴测定液相扩散系数的膜池法，并基于对非稳态过程的数学分析，本文建立了测定凝胶中有效扩散系数的稳态流动法；设计了一种适用于支载高含水量强度较低的凝胶及固定化细胞类软性物质的成膜框架，改进了膜状软性物质厚度的测量方法，使实验易于进行，提高了重复性。

The main works of this paper are as follows.First, according to the three-step method, 1-D unsteady flow model in river network is introduced. A new topological structure is presented to describe and store the topology information and data in river network ,which realises the connection between GIS and the numerical program of hydraulic calculating and turns the program into a universal one .A new formula of internal boundary conditions with double-recursion algorithm is deduced, and the relationship of recursive coefficient between imaginary channel length and non-imaginary channel length is presented ,which makes sure that the model can comprise the numerical simulation of the internal boundaries such as side pipe outflow ,barrage, slice gate and drainage pump station.

主要工作如下：(1)根据三级解法建立了一维河网非恒定流模型，并提出了一种新的数据结构来描述和储存河网拓扑信息，方便了GIS平台和数值计算程序的衔接，实现了三级解法程序的通用性；从河段方程组出发，根据虚设河段法推导出了内边界条件的双追赶法公式，指明了虚设河段的追赶系数和非虚设河段追赶系数的关系，从而使模型可以模拟集中旁侧入流、堰、闸、水泵等内边界对行洪过程的影响。

The technique does not have any simplification of drainage holes. In this paper, discussions are mainly conducted on the substructure mesh dividing and its second time automatic dividing, the substructure shape, the continuity among substructures and general elements, the classification and definition of the integrated hydraulic model of drainage substructure, the iteration computation of water level inside drainage hole, the application of the technique in solving unsteady unsaturated seepage field, etc., therefore, the high efficient, precise and quantitative analysis of the complex seepage with densely distributed drainage holes is totally realized.

该技术不对排水孔幕作任何简化，本文着重从子结构网格划分模式及二次自动剖分、子结构单元形态、子结构与总体单元网格之间的连续性、排水子结构完整水力学模型分类及定义、排水孔内水位迭代计算、排水子结构法在非稳定非饱和渗流场中的推广应用等各个方面进行论述，实现了对工程复杂渗流场中密集排水孔幕的高效、精细、定量分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。