矩形虾池环流的流动特点与流动阻力

对矩形虾池在水车式增氧机作用下产生的环流特点进行理论分析，结果表明，在转角处会形成涡旋，边壁附近在一定条件下会产生回流；利用ANSYS软件的FLOTRAN CFD进行数值计算，获得与理论分析一致的结果，与现场实际情况吻合。并进一步对虾池阻力进行分析，提出了一些减阻措施。     

Geochemical survey of thermal system in Northeast China and their geothermometric characters

The chemical composition of several thermal springs around Changbaishan area has been investigated. Cenozoic basaltic rocks are widely distributed in Northeast China and geothermal characteristics have been described. About one hundred hot springs exist around Changhaishan Volcano at the border between China and D.P.R.Korea with high temperature about 82~C. The pH values of the spring water range from 6.9 to 7.1 and the total flow rate is about 4.8 L/sec. The chemical composition of the thermal springs is sodium carbonate; the high-mineral contents of thermal water are believed to have medicinal properties. Bathhouses are already built along the hot springs to take the advantage of the supposed healing properties. The high quality of those hot springs is believed to be utilitized for mineral water. The chemical equilibrium temperatures were estimated at about 160℃ based on the Na-K-Ca geochemical thermometer.     

流动注射在线液—液萃取原子吸收光谱法测定天然水中铬（Ⅲ）和铬（Ⅵ）

利用新设计的流动注射液－液萃取分相器，研究了液－液在线萃取原子吸收光谱法测定Ｃｒ和Ｃｒ的实验条件、流路参数和操作程序。拟定的新方法用于武汉东湖不同区域水样中铬的测定，检出限为２．２ｎｇ／ｍｌ。     

一滴水

我的名字是水,化学式为H2O,有固体、液体、气体三种形态. 自从水妈妈把我生下来以后,我的生活一直很安逸,冬天为固态,夏天为液态.我喜欢固态,因为我可以随意变幻不同的造型,有方,有圆,还有不规则的多边形.     

规则波和不规则波作用下消波建筑物前的波高分析

消波建筑物在国内外已得到广泛应用。本文采用近似方法分析了明基床上直立式消波建筑物前的波高及消波室内的波高，从而确定建筑物的消波效果。并在规则波的基础上将成果推广至不规则波作用下的情况。     

Numerical Study on Instantaneous Discharge of Unsorted Particle Cloud in Cross Flow

The mixing characteristics of particles such as dredged sediment of variable size discharged into cross flow are studied by a 3D numerical model, which is developed to model the particle-fluid two-phase flow. The Eulerian method with the modified k-ε parameterization of turbulence for the fluid phase is used to solve fluid phase, while a Lagrangian method for the solid phase (particles), both the processes are coupled through the momentum sources. In the model the wake turbulence induced by particles has been included as additional source term in the k-ε model; and the variable drift velocities of the particles are treated efficiently by the Lagrangian method in which the particles are tracked explicitly and the diffusion process is approximated by a random walk model. The hydrodynamic behavior of dumping a cloud of particles is governed by the total buoyancy of the cloud, the drag force on each particle and the velocity of cross-flow. The computed results show a roughly linear relationship between the displacement of the frontal position and the longitudinal width of the particle cloud. The particle size in the cloud and the velocity of cross flow dominate the flow behavior. The computed results are compared with the results of laboratory experiments and satisfactory agreement is obtained.     

Second-Order Solutions for Random lnterfacial Waves Under Steady Uniform Currents

In the present research, the study of Song (2004) for random interracial waves in two-layer fluid is extended to the case of fluids moving at different steady uniform speeds. The equations describing the random displacements of the density interface and the associated velocity potentials in two-layer fluid are solved to the second order, and the wave-wave interactions of the wave components and the interactions between the waves and currents are described. As expected, the extended solutions include those obtained by Song (2004) as one special case where the steady uniform currents of the two fluids are taken as zero, and the solutions reduce to those derived by Sharma and Dean (1979) for random surface waves if the density of the upper fluid and the current of the lower fluid are both taken as zero.     

应用Boussinesq方程对由航道开挖所造成水深结构的变化产生的异常波况数值模拟研究

本文应用Ｂｏｕｓｉｎｅｓｑ方程采用有限差分法建立了非线性波浪数值模式，并应用该模式对由航道开挖所造成的水深结构变化对波浪传播产生的异常现象进行了数值模拟研究。从结果分析可知，这种异常波浪局部增大现象是由于入射波与航道夹角过小，使波浪无法折射入航道，而在航道两侧反射并与直接入射波叠加的结果。因此对于由水深的变化产生的波浪反射现象也是不可忽视的     

恒离子强度下KCl＋K2SI4＋H2O溶液中氯化钾活度系数的测定

我们已用钾离子敏感膜电极和银-氯化银电极组成无液界电池，通过测量其电动势的方法测定了25℃时恒定离子强度(I=0．1，0．3，0．5和0．7)条件下，KCl-K2SO4水溶液中KCl的平均质量摩尔浓度活度系数。结果表明，KCl的平均活度系数的对数与混合溶液中每个电解质的离子强度分量，在该条件下服从哈内特线性关系。已用最小1二乘法计算了相应的哈内特系数。在相应恒离子强度(I=0．1，0．3，0．5和0．7)条件下，其值分别为0．0430，0．0356，0．0329和0．0320。