Study on Numerical Simulation and Performance of the Secondary Throttle Choke Used in the Oil Field

2013 ◽  
Vol 712-715 ◽  
pp. 1201-1204
Author(s):  
Hai Feng Zhao ◽  
Yan Xu
Keyword(s):  
Numerical Simulation ◽  
Pressure Change ◽  
Simulation Method ◽  
Differential Pressure ◽  
Oil Field ◽  
Pressure Curve ◽  
Flow Pressure ◽  
Flow Changes ◽  
And Performance ◽  
Main Factor

The numerical simulation method is adopted to calculate the flow field of the secondary throttle choke used in the oil field. The relationships among the flow of the secondary throttle choke, differential pressure and diameters are studied. The results of numerical simulation coincide with the experiment values, which verify that the method is correct. The results show that the flow increases with the increasing of differential pressure of the throttle choke at both ends, but the increment of the flow gradually decreases. The structure could maintain the flow not to change basically when differential pressure change in a certain scope. When the throttle diameter turns out to be small, the flow decreases, and flow-pressure curve gradually becomes aclinic. Compared with the first-class throttle diameter, the second-class throttle diameter is the main factor which effects flow changes.

Research on Sol-Gel Transition Process of Gelatin

2013 ◽  
Vol 683 ◽  
pp. 474-478
Author(s):  
Xi Liang Chen ◽  
Qing Nan Shi
Keyword(s):  
Numerical Simulation ◽  
Sol Gel ◽  
Transition Process ◽  
Controlled Drug Release ◽  
Simulation Method ◽  
Simulation Research ◽  
Gelation Process ◽  
Sol Gel Transition ◽  
And Performance ◽  
Gel Transition

As a kind of functional material, gelatin gel is widely used in controlled drug release, biological tissue engineering, photographic and food industries. Plenty of studies on the gelatin gel have been carried out by researchers, which include gelation mechanisms, gelation kinetics, analysis on the crosslinked structure and macroscopic performance during the gelation process. Numerical simulation is a new method used in the study of gelatin sol-gel transition process, which can make up for the deficiency of the experimental research. E.g., the dynamic gelation process makes it difficult to measure the structural and performance parameters in time and space scales in experiments. However, these problems have been solved by numerical simulation method in our previous work. The experimental, theoretical and numerical simulation research on sol-gel transition of gelatin is reviewed, and the progress and difficulties in this field are discussed.

scholarly journals Numerical Simulation Research on the Irradiation-Thermal-Mechanical Performance Evolution of FCM Fuel

2021 ◽  
Vol 9 ◽  
Author(s):  
Tang Changbing ◽  
Li Yuanming ◽  
Jiao Yongjun ◽  
Zhang Kun ◽  
Wang Peng
Keyword(s):  
Numerical Simulation ◽  
Optimization Design ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Simulation Method ◽  
Mechanical Coupling ◽  
Numerical Simulation Method ◽  
Coupling Behavior ◽  
And Performance ◽  
Triso Particles

FCM fuel which microencapsulated TRISO particles in SiC matrix is a promising ATF (accident tolerant fuel) candidate fuel designed to replace the traditional pellet-cladding fuel rod. In order to predict the in-pile behavior of FCM fuel accurately and to optimize the design of FCM fuel, it is necessary to establish a numerical simulation method of irradiation-thermal -mechanical coupling behavior of FCM fuel. In this study, the related thermal effects and irradiation effects of FCM fuel and the effect of gap heat transfer are considered. User defined subroutines are compiled respectively, and the above-mentioned correlation effects are introduced into ABAQUS software to establish a numerical simulation method for the irradiation-thermal -mechanical coupling behavior of FCM fuel. Based on the established numerical simulation method, the performance evolution of FCM fuel in the reactor is simulated, and the possible failure modes of FCM fuel in the reactor are analyzed. The research results can provide guidance for the optimization design and performance prediction of FCM fuel.

Analysis of Numerical Simulation and Performance Prediction in Centrifugal Pump for Warship

2014 ◽  
Vol 608-609 ◽  
pp. 66-70
Author(s):  
Jun Wang
Keyword(s):  
Numerical Simulation ◽  
Centrifugal Pump ◽  
Curve Fitting ◽  
Performance Test ◽  
High Reliability ◽  
Three Dimensional ◽  
Testing System ◽  
Flow Pressure ◽  
And Performance ◽  
Test Process

Through the ship flow field of centrifugal pump that can be numerical simulation of three-dimensional turbulent, the paper reveals the pump flow pressure and velocity distribution. It also introduces the function of hardware and module testing system, according to the centrifugal pump performance test data, to achieve the minimum two multiplication curve fitting module using VC programming, curve fitting for the transformed data, the results show that the system is running stable, and convenient operation in the test process, simple maintenance and high reliability.

scholarly journals Interface Detection of Concrete and Slurry in Cast-in Place Pile

2018 ◽  
Vol 238 ◽  
pp. 02013 ◽  
Author(s):  
Zhaolei Liu ◽  
Lei Yu ◽  
Shuxiong Zhang
Keyword(s):  
Numerical Simulation ◽  
Laboratory Tests ◽  
Simulation Method ◽  
Differential Pressure ◽  
Fixed Distance ◽  
Numerical Simulation Method

To find the interface of concrete and slurry in a cast-in place pile, the numerical simulation method and Laboratory tests are performed. Pressures along a pipe were obtained. Differential pressures of fixed distance were calculated. Differential pressure curves were plotted. The result shows that pressure along a pipe is differ. Differential pressure remains constant in certain mediums but changes across different mediums. The interface of concrete and slurry can be found from differential pressure plots. If transducers whose number is at least two can be tied on a fixed place of pipe, differential pressure will be obtained by pulling pipe out gradually, and the interface of the concrete and slurry will be found easily. This is useful for keeping pipe under concrete and ensuring pipe quality.

Precision Analysis of Simulation Systems with Hardware-in-Loop Caused by Performance of Three-Axis Virtual Flight Motion Simulator

2011 ◽  
Vol 383-390 ◽  
pp. 4860-4864
Author(s):  
Tao Wang ◽  
Ming Chao Zhu ◽  
Sheng Li Yin ◽  
Hong Guang Jia
Keyword(s):  
Numerical Simulation ◽  
Simulation Method ◽  
Simulation System ◽  
Visual Simulation ◽  
Mechanical Device ◽  
Load Torque ◽  
Motion Simulator ◽  
Hardware In Loop ◽  
Simulation Systems ◽  
Main Factor

Simulation systems with hardware-in-loop are composed by three-Axis virtual flight motion simulator, simulation computer, load torque simulator, and visual simulation systems. Three-Axis Virtual Flight Motion Simulator are used to simulate the attitude of missile in simulation system with hardware-in-loop, so its performance influenced the result of simulation directly. This paper mainly analyzed the factors which influenced the performance of a three-Axis virtual flight motion simulator which we are used now in the lab, then analyzed the entire simulation system’s error caused by these factors through numerical simulation method. By analysis we can see that bandwidth is the main factor influenced the precision of simulation systems with hardware-in-loop, mechanical device installation error and measurement error may also cause some errors of the systems at the same time.

Numerical Simulation Optimization Study on Adjusting Well Pattern and Productive Series in Xingqi Area

2012 ◽  
Vol 616-618 ◽  
pp. 669-673
Author(s):  
Dai Yin Yin ◽  
Bo Ying ◽  
Wei Zhou ◽  
Cheng Li Zhang
Keyword(s):  
Numerical Simulation ◽  
Simulation Method ◽  
Oil Field ◽  
Water Flooding ◽  
Vertical Heterogeneity ◽  
Well Pattern ◽  
Daqing Oil Field ◽  
Tertiary Recovery ◽  
Water Cut ◽  
Control Degree

In order to optimize space of tertiary infill wells and tertiary recovery wells, this paper applies numerical simulation method to study Xingqi Area in Daqing oil field. According to serious lateral and vertical heterogeneity and different control degree of water flooding in different parts of reservoir, 3 development schemes are designed. Numerical simulation results show that Scheme 2 is the best, whose well pattern consists of tertiary infill wells and tertiary recovery wells. When water cut is 98%, the ultimate recovery reaches 58.66%, which is 10.74% higher than the ultimate recovery of old well pattern. The result possesses great theoretical guidance for the same kinds of reservoirs.

The Development and Performance Analysis of a Tri-Proportion Controller

2011 ◽  
Vol 317-319 ◽  
pp. 2030-2036
Author(s):  
Qi Fa Chen ◽  
Yu Cai Wang ◽  
Kai Luo ◽  
Dai Jin Li
Keyword(s):  
Experimental Data ◽  
Simulation Method ◽  
Differential Pressure ◽  
Measuring Range ◽  
Proportional Control ◽  
And Performance ◽  
The Mathematical Model ◽  
The Relationship ◽  
Control Accuracy ◽  
Pressure Characteristics

By analyzing the operating principle and building the mathematical model, the pressure characteristics of the tri-proportion controller are obtained. A simulation about the pressure characteristics is carried out, which shows the differential pressure and rotational speed are subjected to a linear relationship within the full measuring range. The simulation result agrees with experimental data very well, which shows the feasibility of this simulation method. Analyzing the pressure characteristics and the proportional control accuracy, we obtained the minimum differential pressure, the maximum differential pressure, the factors which affect the differential pressure and the relationship between the differential pressure and leakage. And finally we obtained the solutions of decreasing the leakage and improving the proportional control accuracy.

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