Numerical Simulation of Dynamic Process of the Tangshan Earthquake by a New Method—LDDA

2000 ◽  
Vol 157 (11) ◽  
pp. 2083-2104 ◽  
Author(s):  
Y. Cai ◽  
T. He ◽  
R. Wang
Keyword(s):  
Numerical Simulation ◽  
Dynamic Process ◽  
New Method ◽  
Tangshan Earthquake

Numerical simulation of dynamic process of the Tangshan earthquake

1999 ◽  
Vol 12 (5) ◽  
pp. 516-524 ◽  
Author(s):  
Young-En Cai ◽  
Tao He ◽  
Ren Wang
Keyword(s):  
Numerical Simulation ◽  
Dynamic Process ◽  
Tangshan Earthquake

A New Method of Numerical Simulation for Perforation Completion of Fracture Formation

2000 ◽  
Author(s):  
Zhanghua Lian ◽  
Yingfeng Meng ◽  
Min Tong
Keyword(s):  
Numerical Simulation ◽  
New Method ◽  
Fracture Formation

Experimental Study of Two-Phase Compulsive Circulation Flows Finishing

2010 ◽  
Vol 135 ◽  
pp. 149-153 ◽  
Author(s):  
Wen Hui Li ◽  
Sheng Qiang Yang ◽  
Xiu Hong Li
Keyword(s):  
Numerical Simulation ◽  
Experimental Study ◽  
Liquid Flow ◽  
New Method ◽  
Surface Finishing ◽  
Two Phase ◽  
Nozzle Position ◽  
Main Factors

For the precise hole surface, the burr severely affects products’ performance. Considering the specific conditions of the precise hole surface finishing, a new method of two-phase compulsive circulation flows finishing is brought up. Nozzle number, nozzle position, liquid flow, etc. are main factors, which would directly influence finishing effect and efficiency. Affecting rules of main factors are studied by experiments and numerical simulation, which provide basis for thorough research.

scholarly journals Numerical simulation of pounding damage to caisson under storm surge

2018 ◽  
Vol 38 ◽  
pp. 03046
Author(s):  
Chen Yu
Keyword(s):  
Numerical Simulation ◽  
Storm Surge ◽  
Failure Mode ◽  
Structural Model ◽  
Time History ◽  
Element Model ◽  
Wave Force ◽  
New Method ◽  
Wave Direction ◽  
Force Time

In this paper, a new method for the numerical simulation of structural model is proposed，which is employed to analyze the pounding response of caissons subjected to storm surge loads．According to the new method，the simulation process is divided into two steps. Firstly, the wave propagation caused by storm surge is simulated by the wave-generating tool of Flow-3D, and recording the wave force time history on the caisson. Secondly，a refined 3D finite element model of caisson is established，and the wave force load is applied on the caisson according to the measured data in the first step for further analysis of structural pounding response using the explicit solver of LSDYNA. The whole simulation of pounding response of a caisson caused by “Sha Lijia” typhoon is carried out. The results show that the different wave direction results in the different angle caisson collisions, which will lead to different failure mode of caisson, and when the angle of 60 between wave direction and front/back wall is simulated, the numerical pounding failure mode is consistent with the situation.

Design of Diagnosis System for Insulation Degradation by Using Neurofuzzy Model

2000 ◽  
Vol 4 (5) ◽  
pp. 368-372
Author(s):  
Yigon Kim ◽  
◽  
Yang Hee Jung ◽  
Yong Chul Bae
Keyword(s):  
Numerical Simulation ◽  
Early Warning ◽  
Partial Discharge ◽  
Data Acquisition System ◽  
Electrical Equipment ◽  
New Method ◽  
Insulation Aging ◽  
Insulation Degradation ◽  
On Line ◽  
Data Design

Insulation aging diagnosis provides early warning of electrical equipment defects that helps avoid loss from unexpected production line shutdown. Since relations of insulation aging and partial discharge dynamics are nonlinear, it is very difficult to provide early warning in electrical equipment. This paper suggests a new method for diagnosing insulation aging that measures partial discharge on-line from DAS(Data Acquisition System) and acquires 2D patterns from analyzing it using wavelets. Using this data, design of a neurofuzzy model that diagnoses electrical equipment is investigated. Validity of the new method is confirmed by numerical simulation.

Simulation and Design of Experimental Equipment for Two-Phase Compulsive Circulation Flows Finishing

2010 ◽  
Vol 135 ◽  
pp. 319-324 ◽  
Author(s):  
Sheng Qiang Yang ◽  
Wen Hui Li ◽  
Shi Chun Yang
Keyword(s):  
Numerical Simulation ◽  
Process Parameters ◽  
New Method ◽  
Surface Finishing ◽  
Experimental Equipment ◽  
Experimental Basis ◽  
Two Phase ◽  
Basic Premise

For the precise hole surface, the burr severely affects products’ performance. Considering the specific conditions of the precise hole surface finishing, a new method of two-phase compulsive circulation flows finishing is brought up. On the basic premise of defining k-ε model, numerical simulation of finishing project is done and its feasibility is defined. Experimental equipment is designed, especially, component of circulation flows formation is analyzed in detail, which provide experimental basis for process parameters and thorough research.

Simulation of Equipment Parameters on Gas-Particle Two-Phase Swirling Flows Finishing

2009 ◽  
Vol 416 ◽  
pp. 342-347 ◽  
Author(s):  
Sheng Qiang Yang ◽  
Wen Hui Li ◽  
Shi Chun Yang
Keyword(s):  
Numerical Simulation ◽  
Equipment Design ◽  
Swirling Flows ◽  
Nozzle Diameter ◽  
New Method ◽  
Surface Finishing ◽  
Theoretic Analysis ◽  
Two Phase

For the precise hole surface, the burr severely affects products’ performance. Considering the specific conditions of the precise hole surface finishing, a new method of gas-particle two-phase swirling flows finishing is brought up. By theoretic analysis, equipment parameters, nozzle angle, nozzle diameter, nozzle quantity, nozzle displacement, etc., affect finishing quality and efficiency. Numerical simulation of equipment parameters is done through CFD software (Fluent, Gambit), which provides credible basis for thorough research and equipment design.

Numerical Simulation and Rational Use of Groundwater in Beijing Daxing

2014 ◽  
Vol 955-959 ◽  
pp. 3116-3119
Author(s):  
Dong Mei Ma ◽  
Hai Ping Zhang ◽  
Wen Qing Wei ◽  
Cai Xia Hao ◽  
Fang Fang
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Dynamic Process ◽  
Groundwater Level ◽  
Affecting Factors ◽  
Rational Use ◽  
Hydrogeological Conditions

In order to promoting the reasonable utilization of groundwater in Daxing district, the groundwater level dynamic process was simulated by generalizing hydrogeological conditions and constructing groundwater numerical simulation model. The results shows that the main affecting factors of groundwater level in the Daxing area are exploitation and precipitation recharge. Some groundwater exploiting measures are recommended according to the simulation result.

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