内循环三相流化床流体动力学性质的初步研究

研究了内循环三相流化床流体动力学的一些性质，认为随着进气流量的增大，氧的体积传递系数、气含率增加，混合时间与循环时间则减小。而随着载体的加入量增大，气含率、氧传递系数、循环时间和混合时间均有减小的趋势。根据实验结果确定载体投加量为6％，相应的进气量控制在0．75－1Nm^3/h之间。     

加强近岸海域环境监测保证海洋经济持续发展

近岸海域资源丰富，但近年来污染加重，灾害频繁，影响了海洋经济的发展和资源的可持续利用。本文论述了海洋环境监测与海洋资源可持续利用的关系，提出了如何加强近岸环境监测的对策。     

Modelling the motion of an internal solitary wave over a bottom ridge in a stratified fluid

A series of laboratory experiments has been carried out to investigate the passage of an internal solitary wave of depression over a bottom ridge, in a two-layer fluid system for which the upper and lower layer is linearly-stratified and homogeneous respectively. Density, velocity and vorticity fields induced by the wave propagation over the ridge have been measured simultaneously at three locations, namely upstream, downstream and over the ridge crest, for a wide range of model parameters. Results are presented to show that wave breaking may occur for a sufficiently large wave amplitude and a strong ridge blockage factor, with accompanying mixing and overturning. Density field data are presented (i) to illustrate the overturning and mixing processes that accompany the wave breaking and (ii) to quantify the degree of mixing in terms of the wave and ridge parameters. For weak encounters, good agreement is obtained between the laboratory experimental results (velocity and vorticity fields induced by the wave propagation) and the predictions of a recently-developed fully nonlinear theory. Discrepancies between theory and experiment are discussed for cases in which breaking and mixing occur.     

海水混合和层化对叶绿素a垂直分布的影响

根据长江口海区、近岸浅水区、黄海冷水团海区和水深超过200m的陆架区等四个区域的定点调查获得的数据，分析了温度、盐度与叶绿素a垂直分布的相互关系。结果表明，长江口海区，陆源径流与海水混合不充分，表层营养盐含量较高，表层叶绿素a含量高于中下水层。近岸浅水区的苏北近岸海水垂向没有温跃层和盐跃层，叶绿素a的垂向分布也均匀，东海西部沿岸出现逆温跃层和逆盐跃层，海水垂直混合不充分，叶绿素a含量(6．72mg／m^3)在10m深水域最高。黄海冷水团海区海水的垂直混合不充分，叶绿素a的垂直变化显著，高值区出现在温跃层下方(4．37mg／m^3)。水深超过200m的陆架区，温度的阶梯状结构、营养盐跃层、光照等因素共同导致整个水层叶绿素a含量普遍较低。同时，结合历史资料分析认为，海水的混合、温度和盐度的层化将影响营养盐的浓度和分布，从而影响海水中叶绿素a的垂直分布。     

连续挤压技术在铜管生产上的应用

随着对铜管需求量的不断增加 ,传统的铜管生产工艺已经不能满足需要。提出了一种高效节能的铜管生产新技术连续挤压生产工艺。     

10000m^3／h横流冷却塔的“混装”改造

采用混装技术改造冷却塔，消除了原有故障，提高了效能，保证了安、稳、长、满优生产。     

静态混合器在污水处理装置上的应用

介绍了螺旋式管道静态混合器的结构和原理．在PTA污水处理装置上，采用三级静态混合器进行得水混合，代替了均质池加搅拌机的传统混合方法．收到了良好的效果．实现了投资省、耗能低、维修容易、混合效果好的目的．为污水处理领域进行污水混合提供了新的行之有效的方法．     

陈行水库氨氮完全混合模型研究

建立了陈行水库氨氮完全混合模型,对氨氮浓度进行了模拟预测,并讨论了结论.     

复合肥与有机肥配合施用对黄瓜产量的影响

在湘南地区普遍缺铁钾的红壤上，采用含钾量相对较高而含氮量相对较低的12—12—17s复合肥与有机肥配合施用，结果表明：与当地传统施肥相比较，施用12—12—17s复合肥能显著提高黄瓜产量；复合肥与有机肥配施增产效果更好．因此，复合肥与有机肥配施能大幅度提高黄瓜产量．     

Stability and Mixing of a Vertical Axisymmetric Buoyant Jet in Shallow Water

The stability, mixing and effect of downstream control on axisymmetric turbulent buoyant jets discharging vertically into shallow stagnant water is studied using 3D Reynolds-averaged Navier–Stokes equations (RANS) combined with a buoyancy-extended k –ε model. The steady axisymmetric turbulent flow, temperature (or tracer concentration) and turbulence fields are computed using the finite volume method on a high resolution grid. The numerical predictions demonstrate two generic flow patterns for different turbulent heated jet discharges and environmental parameters (i) a stable buoyant discharge with the mixed fluid leaving the vertical jet region in a surface warm water layer; and (ii) an unstable buoyant discharge with flow recirculation and re-entrainment of heated water. A stratified counterflow region always appears in the far-field for both stable and unstable buoyant discharges. Provided that the domain radius L exceeds about 6H, the near field interaction and hence discharge stability is governed chiefly by the jet momentum length scale to depth ratio l_M/H, regardless of downstream control. The near field jet stability criterion is determined to be l_M/H = 3.5. A radial internal hydraulic jump always exists beyond the surface impingement region, with a 3- to 6-fold increase in dilution across the jump compared with vertical buoyant jet mixing. The predicted stability category, velocity and temperature/concentration fields are well-supported by experiments of all previous investigators.