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A Gradient Accuracy Study for the Adjoin&Based Navier-Stokes Design Method
Gradient Accuracy Study Adjoin&Based Navier-Stokes Design Method
2015/7/2
A continuous adjoint method for Aerodynamic Shape Optimization (ASO) using the compressible Reynolds-Averaged Navier-Stokes (RANS) equa-tions and the Baldwin-Lomax turbulence model was implemented and...
A practical design method for reinforced concrete structures with viscous dampers
Viscous damper Design method Reinforced concrete structure Wenchuan Earthquake
2014/4/10
As a result of the 2008 Wenchuan Earthquake, the Chinese government issued a modified seismic code with increased protection categories and seismic intensities. According to the new code, a lot ...
复合叶轮离心泵数值模拟正交试验设计方法（Orthogonal Test Design Method Based on Numerical Simulation for Non-overload Centrifugal Pump with Complex Impeller）
离心泵 复合叶轮 数值模拟 正交试验
2010/12/29
按无过载离心泵设计要求，选择对复合叶轮离心泵性能影响比较关键的叶片出口安放角β2、叶片出口宽度b2、喉部面积Ft和短叶片进口直径Di的4个参数为变化因素按正交方案设计了9台复合叶轮离心泵模型。采用Fluent全流场数值模拟方法对设计的9台模型泵进行正交试验，得到了各几何参数对复合叶轮离心泵各性能指标影响的主次顺序，并得出模型泵的最优设计方案。对最优设计方案的样机试验表明，全流场数值模拟...
基于实例推理的铲式玉米精密播种机设计（Design Method of Precision Spade Punch Planter of Maize Based on CBR）
玉米 播种机 实例推理
2009/12/28
基于实例推理的基本原理，针对传统案例属性相似度计算模型缺乏对不确定环境中不精确信息的适应性，研究了最近邻实例检索过程中实例属性相似度的确定方法以及属性权重的组合计算，提出检索过程中区间值属性相似度的计算模型和基于相似度离差信息的客观赋权方法。将实例推理技术应用在铲式玉米精密播种机的设计过程中，采用IDEF0法对播种机设计任务进行分解，采用最近邻实例检索策略完成实例检索并根据设计要求进行修整，从而达...
A Sensitivity Analysis of the HCM 2000 Delay Model with the Factorial Design Method
Sensitivity analysis Factorial design method HCM 2000 delay model Uniform delay Incremental delay
2009/10/10
The sensitivity of the Highway Capacity Manual (HCM) 2000 delay model to its parameters was investigated with the factorial design method. The study results suggest that the arrival flow, the saturati...
基于偏微分方程的离心泵叶片反设计方法（Inverse Design Method of Centrifugal Pump Blade Based on PDE Method）
泵叶片 优化设计 反问题
2009/9/25
为实现离心泵叶片的参数化优化设计，将微分方程分别应用于叶轮的轴面设计及叶片空间曲面的生成，首先用4次Bezier曲线控制叶轮轴面，用偏微分方程方法生成轴面流线及准正交线，其次用偏微分方程的方法来生成离心泵叶片空间曲面，根据叶片型线方程，利用控制叶片安放角的分布规律来控制叶片边界上点的圆周角坐标，从而控制微分方程的边界条件，最后达到控制叶片形状的目的。实现了叶片的参数化设计。采用梯度优化的方法将正问...
Consideration of subsurface layer to evaluate site amplification effect in the response and limit strength calculation design method, the building standard law
building standard law enforcement order notification subsurface layer site amplification effect
2009/3/4
Buildings in Japan must be designed and constructed according to Building Standard Law, the Enforcement Order and the Notification by Ministry of Construction and the Ministry of Land, Infrastructure ...
TWO-LEVEL SEISMIC DESIGN METHOD USING POST-YIELD STIFFNESS AND ITS APPLICATION TO UNBONDED BAR REINFORCED CONCRETE PIERS
post-yield stiffness two-level seismic design UBRC structure small section pier
2008/12/22
The two-level seismic design method using post-yield stiffness is proposed. The post-yield stifiness on the load —displacement relationship of the RC pier is found to be effective for the reduction o...