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Chunji YAN, Maozhao XIE,
《能源前沿(英文)》 2010年 第4卷 第2期 页码 198-204 doi: 10.1007/s11708-009-0054-5
关键词: liquid jet dominant wave number compressibility instability
Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 171-179 doi: 10.1007/s11709-011-0103-0
关键词: uncoupled state space solution layered poroelastic medium three-dimensional consolidation anisotropic permeability compressible pore fluid
Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO
《结构与土木工程前沿(英文)》 2018年 第12卷 第1期 页码 67-80 doi: 10.1007/s11709-017-0399-5
关键词: deep foundations bearing capacity resistant moment structural cell 3D numerical modeling
陈矛章,彭波
《中国工程科学》 2000年 第2卷 第2期 页码 15-23
本课题组发展了一种扰动涡方法,用以研究叶轮机内动、静叶相互作用[1,2]。其优点是物理图画清楚,计算收敛快。它采用了一个重要假设:扰动胀量为零,从而大大简化 了计算过程。文章的目的是研究此假设的影响,并取消此假设,使扰动涡方法建立在完全严格的数学基础上。由于取消了“扰动胀量为零的假设,需要耦合求解扰动质量方程、扰动涡量输运方程和扰动能量输运方程。这是文章与文献[1,2]的主要区别。
文献[1,2]对NASA67压气机第一级内由于动、静叶间的相互作用引起的非定常流动过程作了数值模拟,并与试验结果作了对比。文章也作了同样的算例,以研究扰动胀量为零的影响。数值模拟结果表明,在引入了扰动胀量后,用扰动涡方法模拟动静干涉仍保持较好的收敛性和收敛速度,且与试验的符合程度更好。文章强调指出,即使对于非定常可压流,为满足无渗透边界条件所需的运动分量也是用椭圆类的拉普拉斯方程描述,而不是用双曲类的方程描述。“扰动胀童为零”不能等同于扰动运动为不可压。
Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 412-424 doi: 10.1007/s11709-017-0432-8
The subject of present study is the application of mesh free Lagrangian two-dimensional non-cohesive sediment transport model applied to a two-phase flow over an initially trapezoidal-shaped sediment embankment. The governing equations of the present model are the Navier-Stocks equations solved using Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method. To simulate the movement of sediment particles, the model considers a powerful two-part technique; when the sediment phase has rigid behavior, only the force term due to shear stress in the Navier-Stokes equations is used for simulation of sediment particles’ movement. Otherwise, all the Navier-Stokes force terms are used for transport simulation of sediment particles. In the present model, the interactions between different phases are calculated automatically, even with considerable difference between the density and viscosity of phases. Validation of the model is performed using simulation of available laboratory experiments, and the comparison between computational results and experimental data shows that the model generally predicts well the flow propagation over movable beds, the induced sediment transport and bed changes, and temporal evolution of embankment breaching.
关键词: WCSPH method non-cohesive sediment transport rheological model two-part technique two-phase dam break
Three-dimensional numerical simulation of the basic pulse tube refrigerator
DING Wenjing, GONG Liang, HE Yaling, TAO Wenquan
《能源前沿(英文)》 2008年 第2卷 第1期 页码 48-53 doi: 10.1007/s11708-008-0008-3
关键词: refrigeration mechanism three-dimensional compressible numerical understanding
标题 作者 时间 类型 操作
Stability of an annular viscous liquid jet in compressible gases with different properties inside and
Chunji YAN, Maozhao XIE,
期刊论文
Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible
Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU
期刊论文
Assessment of an alternative to deep foundations in compressible clays: the structural cell foundation
Sergio A. MARTÍNEZ-GALVÁN, Miguel P. ROMO
期刊论文
Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive
Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH
期刊论文