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Online since: January 2012
Authors: Yong Liu, Zhi Gang Yang, Yue Wu
The simulation analysis turns out that the pump chamber pressure increases sharply in the later of sucking process because of the flow inertia, which is the root cause of sucking process outflow.
It’s measured With laser micrometer measuring the outflow will be distinct, when the open height of outlet check valve is more than 0.0015mm.[8] Simulation Of Sucking Process Outflow Simulation is to receive the pressure changing condition during sucking process outflow, in order to decide whether open the output valve to form outflow, so when modeling, the output condition can be ignored, and the deformation of the piezoelectric vibrator can be used as the translational motion.
In this way, the grid model can be simplified greatly, and the simulation result will not be influenced too much, the simplified fluid-structure interaction model is shown in Fig.4.
Fig.5 is the CFD grid model.
Refer to the simulation of the sucking process of the piezoelectric pump, the chamber pressure is not always minus during, outflow in sucking process is completely possible.
It’s measured With laser micrometer measuring the outflow will be distinct, when the open height of outlet check valve is more than 0.0015mm.[8] Simulation Of Sucking Process Outflow Simulation is to receive the pressure changing condition during sucking process outflow, in order to decide whether open the output valve to form outflow, so when modeling, the output condition can be ignored, and the deformation of the piezoelectric vibrator can be used as the translational motion.
In this way, the grid model can be simplified greatly, and the simulation result will not be influenced too much, the simplified fluid-structure interaction model is shown in Fig.4.
Fig.5 is the CFD grid model.
Refer to the simulation of the sucking process of the piezoelectric pump, the chamber pressure is not always minus during, outflow in sucking process is completely possible.
Online since: September 2013
Authors: Cheng Fei Fan, Yao Hua Wang, Rui Ma, Mian Jun Duan, Xing Chang
The Force State Analysis of theService Door on anAirliner
Chengfei FAN, Yaohua WANG,Rui MA,Mianjun DUAN, Xing CHANG
College of Field Engineering, PLA University of Science and Technology,
Hai Fu Xiang Street 1, Nanjing, Jiangsu, China
tjufcf@163.com
Keywords: The service door; Force state; Bernoulli's Equation; Computational fluid dynamics theory; Numerical simulation.
The movement trajectory and the force state of the service door were obtained by the computational fluid dynamics theory and numerical simulation method.
Then, the force on the service door is, The force analysis of the motion service door When the service door is moving, the load characteristics and the flow field would been obtained through the computational fluid dynamics (CFD) simulation analysis method[5].
The force on the service door was got by the fluid mechanics knowledge, the Bernoulli's Equation, and the computational fluid dynamics (CFD) simulation analysis method.
The movement trajectory and the force state of the service door were obtained by the computational fluid dynamics theory and numerical simulation method.
Then, the force on the service door is, The force analysis of the motion service door When the service door is moving, the load characteristics and the flow field would been obtained through the computational fluid dynamics (CFD) simulation analysis method[5].
The force on the service door was got by the fluid mechanics knowledge, the Bernoulli's Equation, and the computational fluid dynamics (CFD) simulation analysis method.
Online since: September 2013
Authors: Jia Liu, Bai Feng Ji, Li Jiang, Shu Jin Li, You Fu Du
Wind pressure of pedestrian bridge induced by main line train has been investigated using numerical simulation.
But simulation on pedestrian bridge is few.
Numerical simulation and experimental investigation of the side loading on a high speed train [J].
Numerical simulation of aerodynamic characteristics of roof passing by high-speed railway train [J].
Simulation of pressure on overline bridge due to high-speed train passage [J].
But simulation on pedestrian bridge is few.
Numerical simulation and experimental investigation of the side loading on a high speed train [J].
Numerical simulation of aerodynamic characteristics of roof passing by high-speed railway train [J].
Simulation of pressure on overline bridge due to high-speed train passage [J].
Online since: January 2015
Authors: Xiang Chun Li, Yi Liang Zhao, Yang Yang Meng, Fei Fei Zhu, Chun Li Yang
Goaf gas flow patterns are simulated by applying the CFD model development method based on FLUENT program.
The result of numerical simulation is consistent with the experiment on the spot and it suggests that studying goaf gas flow patterns by applying CFD model is one of the feasible methods (Hu et al.)[10].The differential equation is solved by using SIMPLE method and the result of gas concentration distribution is gotten while coal mining machine in working face is cutting coal (Liang et al.)[11].Through numerical simulation, the distribution and the law of its variation of gas concentration field in the upper corner under different conditions of pulsed ventilation are obtained and the result of numerical simulation is consistent with the experiment on the spot (Wang et al.)[12].
CFD simulation of goaf gas flow patterns.
Numeric simulation on gas movement law in working face.
Numerical simulation and experimental study of gas transport in the upper corner of mining face under pulsed ventilation.
The result of numerical simulation is consistent with the experiment on the spot and it suggests that studying goaf gas flow patterns by applying CFD model is one of the feasible methods (Hu et al.)[10].The differential equation is solved by using SIMPLE method and the result of gas concentration distribution is gotten while coal mining machine in working face is cutting coal (Liang et al.)[11].Through numerical simulation, the distribution and the law of its variation of gas concentration field in the upper corner under different conditions of pulsed ventilation are obtained and the result of numerical simulation is consistent with the experiment on the spot (Wang et al.)[12].
CFD simulation of goaf gas flow patterns.
Numeric simulation on gas movement law in working face.
Numerical simulation and experimental study of gas transport in the upper corner of mining face under pulsed ventilation.
Online since: February 2013
Authors: Dan Luo, Zhao Zhong Yang, Xiao Gang Li, Zhou Su
Online since: June 2023
Authors: Abdulbaqi Jinadu, Oluwatomiwa John Odenibi, Joshua Daniel, Volodymyr Koloskov, Dmytro Tiniakov, Olalekan Adebayo Olayemi
After running the simulation, the mass flow rate was computed.
This is an important aerodynamic issue requiring resolution by combining wind tunnel tests, computational fluid dynamics (CFD) simulations, and flight tests.
However, past CFD studies demonstrate that overall simulation of 2D does not affect the accuracy [8].
Computational fluid dynamics (CFD) modeling involves physical laws in the form of partial differential equations called Navier-Stokes equations.
Both pressure contours show that the static pressure profiles from CFD simulations are in reasonable agreement with available experimental data and are like those presented in the literature [1].
This is an important aerodynamic issue requiring resolution by combining wind tunnel tests, computational fluid dynamics (CFD) simulations, and flight tests.
However, past CFD studies demonstrate that overall simulation of 2D does not affect the accuracy [8].
Computational fluid dynamics (CFD) modeling involves physical laws in the form of partial differential equations called Navier-Stokes equations.
Both pressure contours show that the static pressure profiles from CFD simulations are in reasonable agreement with available experimental data and are like those presented in the literature [1].
Online since: January 2012
Authors: Zhen Ya Duan, Ying Ying Dong, Fu Lin Zheng, Jun Mei Zhang
Numerical Simulation and Experimental Verification of Butterfly Porous Fences
Z.Y.
These studies laid a foundation in numerical simulation of the porous fence.
In this paper, FLUENT CFD software was used to present a numerical model for butterfly porous fence to simulate the flow characteristics behind it.
Numerical Simulation Numerical Model Establishment.
of the numerical simulation and the experiment are 0.589 and 0.639 respectively.
These studies laid a foundation in numerical simulation of the porous fence.
In this paper, FLUENT CFD software was used to present a numerical model for butterfly porous fence to simulate the flow characteristics behind it.
Numerical Simulation Numerical Model Establishment.
of the numerical simulation and the experiment are 0.589 and 0.639 respectively.
Online since: October 2011
Authors: Shi Feng, Wang Wei
The authors use the method of CFD to simulate the thermal environment of indoor office units, and do optimal design of the DSF breathing system of the building.
A unit of the curtain wall and its construction Methods Computational Fluid Dynamics (CFD) Simulation methods are used in this article to study the thermal environment of the building under different curtain wall construction.
The simulation results of indoor thermal environment with the curtain wall been shaded or not (shown in Fig.2b and Fig.3b) are compared.
We can draw the relationship of active ventilation speed and indoor average temperature based on several simulations (Fig.4.).
Residential building naturally ventilated room thermal environment simulation analysis.
A unit of the curtain wall and its construction Methods Computational Fluid Dynamics (CFD) Simulation methods are used in this article to study the thermal environment of the building under different curtain wall construction.
The simulation results of indoor thermal environment with the curtain wall been shaded or not (shown in Fig.2b and Fig.3b) are compared.
We can draw the relationship of active ventilation speed and indoor average temperature based on several simulations (Fig.4.).
Residential building naturally ventilated room thermal environment simulation analysis.
Online since: June 2013
Authors: Xu Guang Sun, Cheng Long Feng, Kai Qiao, Zhen Zhao, Chang Hai Wang
Study on Force Sensor Based on Gas Pellicle Loading and Pressure Differentials Enlargement
Xuguang Sun1,a,Changhai Wang2,b,Kai Qiao3,c
Chenglong Feng4,d and Zhen Zhao5,e
1Huaihai Institute of Technology, Lianyungang, Jiangsu, 222000, China
2China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China
3China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China
4China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China
5China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China
aXG_sun@sohu.com, b553617377@163.com, cqiaokaicumt@gmail.com
d332177685@qq.com, e416310795@qq.com
Keywords: the gas pellicle loading, pressure differentials enlargement, pneumatic sensor, the analysis of flow field
Abstract: In this paper, a new force and force location sensor based on the principle of gas pellicle loading and pressure differentials enlargement is designed, and the structure, the principle and the analysis of flow field studied by simulation
Analyses of Gas Blanket Pressure Field Simulation For the sensor, in order to study the interior gas flow field condition and the gas film pressure field change situation, CFD simulation software[3] is presently used in the gas film between the interior panel 7 and the exterior panel 6.
Firstly, using CFD for the simulation model design, it includes four vents uniformly distributed 2×2, and the gas film with 42mm long and wide, 0.03mm thickness.
And after establishing the same boundary condition, the simulation computation result provided as follow in the Figure 9 and Figure 10.
Conclusions This paper discusses the manipulator soft capture and proposes a new sensor based on the principle of gas pellicle loading and pressure differentials enlargement. 1).This sensor is mainly implemented by the technology of gas blanket load bearing and pneumatic micrometer system with amplifying function, and can be used to detect the force location, also realize precise non-damage capture for fragile or soft object. 2.The CFD simulation result about the sensor`s gas film shows the flow field pressure distribution: Besides inlet with higher and variational pressure, other places have lower pressure and basically reach to a state of steady; When load is applied, the pressure near the inlet varies in a wide range, and the pressure far from the outlet has less change.
Analyses of Gas Blanket Pressure Field Simulation For the sensor, in order to study the interior gas flow field condition and the gas film pressure field change situation, CFD simulation software[3] is presently used in the gas film between the interior panel 7 and the exterior panel 6.
Firstly, using CFD for the simulation model design, it includes four vents uniformly distributed 2×2, and the gas film with 42mm long and wide, 0.03mm thickness.
And after establishing the same boundary condition, the simulation computation result provided as follow in the Figure 9 and Figure 10.
Conclusions This paper discusses the manipulator soft capture and proposes a new sensor based on the principle of gas pellicle loading and pressure differentials enlargement. 1).This sensor is mainly implemented by the technology of gas blanket load bearing and pneumatic micrometer system with amplifying function, and can be used to detect the force location, also realize precise non-damage capture for fragile or soft object. 2.The CFD simulation result about the sensor`s gas film shows the flow field pressure distribution: Besides inlet with higher and variational pressure, other places have lower pressure and basically reach to a state of steady; When load is applied, the pressure near the inlet varies in a wide range, and the pressure far from the outlet has less change.
Online since: February 2026
Authors: Ondari Brian Overmars, Stephen Kimutai, Emmanuel Mukubwa
The CFD aids in reduction of experimental costs and time, it is also highly flexible.
Where parameter optimization is required, CFD has come in handy.
Modelling aids simulation in moving bed profiles as well as volatiles and char analysis, [56]. 3.0.
[23] Miao Yang, Shenghui Zhong, Shijie Xu, Peter Ottosson, Hesameddin Fatehi and Xue-Song Bai, “CFD Simulation of Biomass Combustion in an Industrial Circulation Fluidized Bed Furnace”.
Gokalp I., (2015), Review on CFD based models for co-firing coal and biomass.
Where parameter optimization is required, CFD has come in handy.
Modelling aids simulation in moving bed profiles as well as volatiles and char analysis, [56]. 3.0.
[23] Miao Yang, Shenghui Zhong, Shijie Xu, Peter Ottosson, Hesameddin Fatehi and Xue-Song Bai, “CFD Simulation of Biomass Combustion in an Industrial Circulation Fluidized Bed Furnace”.
Gokalp I., (2015), Review on CFD based models for co-firing coal and biomass.