当溶液间存在浓度差时，在介面允许溶质自由通过的条件下，高浓度侧与低浓度侧的溶质在空间上的分布是均匀递减的，此种浓度差在空间上的递减称为浓度梯度。该浓度梯度的作用称为浓度场。
... 扭力粘度计 torsion viscosimeter 浓度场 concentration field 浓度脉动 concentration fluctuation ...
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Single equation is solved by ADI method, and theSIMPLEC algorithm is used to handle the pressure-velocity coupling. The "nopairing resolution" method is used to so1ve the concentration field.
方程求解采用交替方向线迭代法（ADI），用SIMPLEC算法处理速度与压力的耦合，浓度场的求解采用“非耦合解”方法。
参考来源 - 河流复氧及其数值模拟的研究It should combine the data of concentration field of hazard materials in smoke to analyze the effectiveness of the smoke management system.
应当结合烟气有害成分的浓度场分布来分析和评价烟气的危害性程度和烟气控制系统的效率。
参考来源 - 大空间建筑火灾数值模拟研究In the end, the measured data carried on experiment was uesd to verify to the temperature field, speed field and the carbon dioxide density field that the emulation comes out.
最后,采用实验测量的数据对模拟出来的温度场、二氧化碳浓度场和速度场进行了实验验证。
参考来源 - 室内自然通风模拟分析及评价The impact of these factors on indoor airfield was compared and analyzed to make further research on particle concentration distribution.
对比分析这些因素对室内流场的影响,研究它们对颗粒物浓度场的影响规律。
参考来源 - 置换通风房间内气溶胶分布的数值模拟研究·2,447,543篇论文数据，部分数据来源于NoteExpress
本文论述了旋风分离器的速度场和浓度场。
This paper discusses the flow velocity and concentration fields in the cyclone separator.
通过对速度和浓度场的分析得到一些有益的结论。
Some conclusions are also draw by analyzing the velocity and concentration distributions.
采用等动采样方法，对新型旋风管内的颗粒浓度场进行了测试与分析。
By using isokinetic sampling method, the particle concentration distribution in the novel cyclone tube is measured and analyzed.
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