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CHEN, CHANG

• Structural Invulnerability Evaluation Of Complex Multi-layer Emergency Logistics System Based On Interdependent Network Theory

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Authors

CHANG CHEN ¹, JIKUN GUO ¹, QIXIN ZHANG ², SHIFU ZHANG ³, YI WANG ⁴, TENGFEI ZHANG ²

Affiliations
1 Service Command Department, Army Logistics University of PLA, Chongqing 401 331,, CN
2 Oil Department, Army Logistics University of PLA, Chongqing 401 331,, CN
3 National Engineering Research Center for Disaster & Emergency Relief Equipment,, CN
4 Service Command Department, Army Logistics University of PLA, Chongqing 401 331,, CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 1 (2018), Pagination: 31-38

Abstract

Emergency logistic system is quite important for natural disaster recue and other unexpected incidents treatment. At present, most relative modelling and analyzing research on logistic network invulnerability is based on a single network, and does not take the interaction between networks into account. This paper proposes the complex multi-layer logistic model consists of command control network, space communication network and physical transportation network based on interdependent network theory. The result of network invulnerability research shows that the three-layer interdependent network model is more precisely and conform to the actual situation of emergency logistic system operation. Moreover, the invulnerability evaluation method proposed in this paper is more accurate and detailed than the traditional method. This conclusion can provide references for the designing of emergency logistics system with better invulnerability and applied to other areas research. 

Keywords

Invulnerability evaluation; multi-layer system; emergency logistics; interdependent network theory.

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References

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• Hong, J. D., Jeong, K. Y. and Xie, Y. C. (2015): “A multi-objective approach to planning in emergency logistic network design.” International Journal of Industrial Engineering – Theory Applications and Practice, 22(4): 412-425.
• Huang, L., Wang, W. and Wang, M. G. (2013): “Simulation Research of Space-Time Evolution of Emergency Logistics Network Reliability Based on Complex Network Theory.” Discrete Dynamics in Nature and Society, (3): 399-412.
• Kuhnle, A., Nguyen, N. P., Dinh, T. N. and Thai, M. T. (2017): “Vulnerability of clustering under node failure in complex networks.” Social Network Analysis & Mining, 7(1): 8.
• Li, X. H. and Tan, Q. M. (2011): “Hierarchical Traffic Network Design under Emergency Logistics [M]// Zhang, H., Shen, G., Jin, D.” Advanced Research on Information Science, Automation and Material System, Pts 1-6. 2011: 732-735.
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• CFD Analysis On Internal Flow Field Of Liquid Level Control Valve Under Steady Working State

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Authors

Chang Chen ¹, Jikun Guo ¹, Qixin Zhang ², Shifu , Zhang ³, Tingao Shen ⁴

Affiliations
1 Service Command Department Army Logistics University of PLA, Chongqing 401 331, CN
2 Oil Department Army Logistics University of PLA, Chongqing 401 331, CN
3 National Engineering Research Center for Disaster & Emergency Relief Equipment, CN
4 Oil Department, Army Logistics University of PLA, Chongqing 401 331 and Shiqiang Song, Logistics Training Center of PLARocket Force, Hebei 075 000, CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 57-63

Abstract

At present, all kinds of liquid level control system is widely used in ground and underground storage tanks and other containers, which plays an important role to ensure the safety of production. Thus, it become an indispensable device of modern oil production and storage. In this paper, the governing equations of the internal flow field of the automatic control valve are established by using the basic theory of computational dynamic fluid and the RNG two equations turbulence model. And, the internal flow field of the automatic control valve under steady working state is simulated by using Fluent CFD software. Then, the pressure diagram, velocity profiles figure, velocity vector diagrams were obtained. It is believed that the research results of this paper have reference value for the further optimization of liquid level control valve

Keywords

Numerical research, internal flow field, liquid level control valve, steady working state.

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References

• Buchtel, M. E. (2012): Fluid level control toggle valve device and method: US, 8,091,581 [P]. 2012-1-10.
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• Wang, Y., Gao, L., Ge, J., Gao, H. and Zhang, J. (2014): “The numerical simulation analysis of flow field in level control valve of water storage tank.” International Journal of Control and Automation, 7(10): 45-52.
• Wang, Y. and Wu, W. (2004): “Numerical Simulation of Flow Around Blunt Bodies using RNG k-ε Turbulence model.” Journal of University of Shanghai For Science and Technology, 26(6): 519-523.
• Wang, Z. Y., Tang, Y. C. and Liu, Z. G. (2008): “The Design of Refuelling Control Valve and Liquid Level Controller Test System.” Chinese Hydraulics & Pneumatics, 32(7): 16-17.
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• Zhang, Z., Li, B. and Gao, J. (2011): “Analysis on failure causes for level control value in absorberb and retrofit.” Large Scale Nitrogenous Fertilizer Industry, 34(1): 31-32

• Numerical Simulation Of Internal Flow Field Of Liquid Level Control Valve During Closing Process

Abstract Views :84  |  PDF Views:0

Authors

Chang Chen ¹, Qixin Zhang ¹, Shifu Zhang ², Jikun Guo ³, Dongyu Yang ⁴, Shiqiang Song ⁵

Affiliations
1 Oil Department Army Logistics University of PLA, Chongqing 401 331., CN
2 National Engineering Research Center for Disaster & Emergency Relief Equipment., CN
3 Service Command Department Army Logistics University of PLA, Chongqing 401 331., CN
4 Oil Department, Army Logistics University of PLA, Chongqing 401 331., CN
5 Logistics Training Center of PLA Rocket Force, Hebei 075 000., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 69-74

Abstract

Liquid level control value is widely used in the process industry to control internal liquid height as pipe flow control component. During the operation of the liquid level control valve, the force condition of the value core directly affects the stability of the valve works. Therefore, it becomes the important factors in the design of the spring components of the liquid level control valve. In this paper, the internal flow field of the automatic control valve during closing process is simulated by using Fluent CFD software. The numerical simulation results show that in the process of closing the automatic control value, the water hammer phenomenon will be occurred at the beginning stage. With the continuation of the valve closing process, the pressure in upper chamber of the value core and internal chamber are rapidly reduced and tend to be gentle, while the pressure difference increases gradually. What is more, the flow of throttle gradually increases, and the inner chamber of the valve core appears small disturbance. These conclusions provide a theoretical basis for the technical design and improvement of the control valve

Keywords

Numerical simulation, internal flow field, level control valve, closing process.

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References

• Buchtel, M. E. (2012): Fluid level control toggle valve device and method: US, 8,091,581 [P]. 2012-1-10.
• C, H. (2007): Numerical computation of internal and external flows: The fundamentals of computational fluid dynamics [M]. Butterworth-Heinemann, 2007.
• Cao, F., Wang, Y., Yantao, A. N. and Xie, Y. (2011): “Fluid-structure Interaction Analysis for Large-scale Gas Control Valve.” Machine Tool & Hydraulics, 455(11): 146-150.
• Cui, B., Lin, Z., Zhu, Z., Wang, H. and Ma, G. (2017): “Influence of opening and closing process of ball valve on external performance and internal flow characteristics.” Experimental Thermal & Fluid Science, 80193-202.
• Eatwell, W. D. (1988): Liquid level control subsurface valve reduces workover expense in artificial lift pump installations; proceedings of the SPE Annual Technical Conference & Exhibition, October 2, 1988 - October 5, 1988, Houston, TX, USA, F, 1988 [C]. Publ by Soc of Petroleum Engineers of AIME.
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• Khoei, A., Hadidi, K., Khorasani, M. R. and Amirkhanzadeh, R. (2005):. “Fuzzy level control of a tank with optimum valve movement.” Fuzzy Sets and Systems, 150(3): 507-523.
• Liu, C. (2013): “Application of new type liquid level sensor and motor valve into liquid level control.” Refrigeration and Air-Conditioning, 13(3): 26-29.
• Liu, Y. and Liao, G. (2000): Advanced Fluid Mechanics [M]. Shanghai: Shanghai Jiao Tong University Press, 2000.
• Nenniger, J. (2016): Inflow control valve for controlling the flow of fluids into a generally horizontal production well and method of using the same: U.S, 9,394,769 [P]. 2016-7-19.
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• Wang, Y., Gao, L., Ge, J., Gao, H. and Zhang, J. (2014): “The numerical simulation analysis of flow field in level control valve of water storage tank.” International Journal of Control and Automation, 7(10): 45-52.
• Wang, Z. Y., Tang, Y. C. and Liu, Z. G. (2008): “The Design of Refuelling Control Valve and Liquid Level Controller Test System.” Chinese Hydraulics & Pneumatics, 32(7): 16-17.
• Wen, Z., Shi, L. and Ren, Y. (2009): FLUENT Software Fluid Computing Application Tutorial [M]. BeiJing: Tsinghua University Press, 2009.
• Wu, D., Li, S. and Wu, P. (2015): “CFD simulation of flow-pressure characteristics of a pressure control valve for automotive fuel supply system.” Energy Conversion & Management, 101658-665.
• Xu, K., Cai, H., Cui, Y. and Jiang, H. (2003): “Experimental and Numerical Investigation into HighPressure-Combined Valve for Large Steam Turbines.” Power Engineering, 23(6): 2785-2789+2794.
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• Zhang, Z., Li, B. and Gao, J. (2011): “Analysis on failure causes for level control value in absorberb and retrofit.” Large Scale Nitrogenous Fertilizer Industry, 34(1): 31-32

• Theoretical Research on Steady-state and Closing Value Characteristics of Liquid Level Control Value

Abstract Views :88  |  PDF Views:0

Authors

Chang Chen ¹, Shifu Zhang ¹, Jikun Guo ², Qixin Zhang ³, Jianyong Yang ⁴, Shiqiang Song ⁵

Affiliations
1 National Engineering Research Center for Disaster & Emergency Relief Equipment. Army Logistics University of PLA, Chongqing 401 331, CN
2 Service Command Department National Engineering Research Center for Disaster & Emergency Relief Equipment, Army Logistics University of PLA, Chongqing 401 331, CN
3 Oil Department National Engineering Research Center for Disaster & Emergency Relief Equipment, Army Logistics University of PLA, Chongqing 401 331, CN
4 National Engineering Research Center for Disaster & Emergency Relief Equipment, Army Logistics University of PLA, Chongqing 401 331 ., CN
5 Logistics Training Center of PLA Rocket Force, Hebei 075 000., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 79-84

Abstract

During the refuelling process, the float switch closes when the internal tank liquid level reaches the highest level, but the automatic control valve cannot be closed simultaneously. If the delay time is too long, it may lead to an oil spill accident. In this paper, we analyzed the structure and basic working principle of the liquid level control. In addition, the flow of the automatic control valve, the force condition of the value core, the time required for closing the value, the speed and accelerated velocity of value core movement were theoretically studied according to the fluid momentum theorem and the kinematic equation of the valve closing process, which is of great practical significance for advancing research level of liquid level control valve

Keywords

Theoretical research, steady-state, closing value characteristics, liquid level control value.

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References

• Buchtel, M. E. (2012): Fluid level control toggle valve device and method: US, 8,091, 581 [P]. 2012-1-10.
• Cao, F., Wang, Y., Yantao, A. N. and Xie, Y. (2011): “Fluid-structure Interaction Analysis for Large-scale Gas Control Valve.” Machine Tool & Hydraulics, 455(11): 146-150.
• Chao, Z. (2004): “Analysis on characteristic of relief of retarder.” Retarders and Speed Control Technology, 21(4): 3-6.
• Dongchu, S. and Shuhua, F. (1995): Hydraulic Drive Technology Course [M]. BeiJing: Beijing Institute of Technology Press, 1995.
• Eatwell, W. D. (1988): Liquid level control subsurface valve reduces workover expense in artificial lift pump installations; proceedings of the SPE Annual Technical Conference & Exhibition, October 2, 1988 - October 5, 1988, Houston, TX, USA, F, 1988 [C]. Publ by Soc of Petroleum Engineers of AIME.
• Khoei, A., Hadidi, K., Khorasani, M. R. and Amirkhanzadeh, R. (2005): “Fuzzy level control of a tank with optimum valve movement.” Fuzzy Sets and Systems, 150(3): 507-523.
• Liu, C. (2013): “Application of new type liquid level sensor and motor valve into liquid level control.” Refrigeration and Air-Conditioning, 13(3): 26-29.
• Wang, Y., Gao, L., Ge, J., Gao, H. and Zhang, J. (2014): “The numerical simulation analysis of flow field in level control valve of water storage tank.” International Journal of Control and Automation, 7(10): 45-52.
• Wang, Z. Y., Tang, Y. C. and Liu, Z. G. (2008): “The Design of Refuelling Control Valve and Liquid Level Controller Test System.” Chinese Hydraulics & Pneumatics, 32(7): 16-17.
• Zhang, Z., Li, B. and Gao, J. (2011): “Analysis on failure causes for level control value in absorberb and retrofit.” Large Scale Nitrogenous Fertilizer Industry, 34(1): 31-32

• Finite Element Analysis on Deformation and Stress Distributions of Double-wall Oil Tank under Double Supports Installation Mode

Abstract Views :104  |  PDF Views:0

Authors

Chang Chen ¹, Shifu Zhang ¹, Qixin Zhang ¹, Jikun Guo ¹, Shiqiang Song ², Binbin Yu ³

Affiliations
1 Army Logistics University of PLA, Chong Qing, 401311., CN
2 Logistics Training Center of PLA Rocket Force, Hebei 075000, CN
3 Navy Logistics University of PLA, Handan 056000., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 102-115

Abstract

The double-wall oil tank is more and more widely used in filling station due to the characteristics of corrosion protection, safety and economy. However, the outer tank of SF double oil tank has thinner wall thickness and lower strength, improper installation method may cause damage to the tank. In this paper, a simplified finite element model of double tank is established according to the structural characteristics of SF double-wall oil tank. Focusing on the 20 m³, 30 m³ and 50 m³ oil tanks which are widely used in the current gas stations, the deformation and stress distribution of the oil tanks under different bearing width and support position are calculated by ANSYS software respectively. Taking the 30 m³ oil tank as an example, the deformation, stress distribution characteristics and the influence of the bearing support position on the stress distribution are analyzed in detail, which would provide guidance for selecting the reasonable size and position of supporting bearing under double supports installation mode.

Keywords

Numerical simulation, stress distribution, double-wall oil tank, double supports installation mode.

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References

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• Numerical Simulation and Experimental Study on the Influence of Novel Refuelling Nozzle with Rectifier Tube in the Process of Diesel Refuelling

Abstract Views :79  |  PDF Views:0

Authors

Chang Chen ¹, Qixin Zhang ², Shifu Zhang ², Jikun Guo ², Zhi Han ³, Shiqiang Song ⁴

Affiliations
1 Army Logistics University of PLA, Chong Qing, 401311, CN
2 Army Logistics University of PLA, Chong Qing, 401311., CN
3 Oil Representative Office of PLA, Beijing 100081., CN
4 Logistics Training Center of PLA Rocket Force, Hebei 075000., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 127-134

Abstract

When applying the traditional refuelling gun in large-flow rapid refuelling process, large amount of bubbles are produced under the strong impact between the high speed oil column and the tank wall or internal oil surface, which will reduce the refuelling efficiency seriously. In this paper, a combination of CFD simulation and refuelling experiment has been conducted to analyse the effect of rectifier tube in flow field stability and diesel foam reduction when applying to the process of large-flow rapid refuelling. The simulation result has been further discussed by comparing with the refuelling experiment data. And, it has been proved that the application of rectifier tube in the refuelling nozzle can control the turbulent state of the flow field effectively and reduce foam generation significantly, so as to make contribution to improve the refuelling efficiency and operation security.

Keywords

Numerical simulation, experimental study, rectifier tube, volume of fluid model, PISO algorithm.

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References

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• CFD Numerical Simulation of Internal Flow Field in Fuel Tank during Large-flow Rapid Refuelling Process.

Abstract Views :86  |  PDF Views:0

Authors

Chang Chen ¹, Shifu Zhang ¹, Jikun Guo ¹, Qixin Zhang ¹, Dongmei Zhang ¹, Zhi Han ²

Affiliations
1 Army Logistics University of PLA, Chong Qing, 401311., CN
2 Oil Representative Office of PLA, Beijing 100081., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 135-142

Abstract

With the gradual improvement of modern social life, more and more attentions are attracted to higher efficiency of refuelling process. However, large flow rapid refuelling process may result in unexpected turbulence and violating the safety standards. Since there are a few of existing literature researches the internal flow field in fuel tank during large flow rapid refuelling process, this paper carried out numerical simulation research for the gas-liquid two-phase flow in oil tank under the condition of vertical refuelling and tilting filling in that circumstance, and devoted to research characteristics of the flow field inside the fuel tank and the cause of the foam formation under different fuelling conditions by using CFD software. The result of this study was of certain reference value to solve the problems of large foam and turbulence in flow field during large flow rapid refuelling process.

Keywords

Numerical simulation, VOF model, internal flow field, large-flow rapid refuelling process, CFD.

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References

• Chen, J. Q., Zhang, N., Wang, J. H., Zhu, L., Shang, C. (2011). CFD numerical simulation onto the gas-liquid twophase flow behavior during vehicle refuelling process. Environmental Science, 32(12): 3710-3716.
• Chen, L., Feng, Z. H., Dong, T. Z., Wang, W. H., Liu, S. (2015). Numerical simulation of the internal flow field of a new main nozzle in an air-jet loom based on Fluent. Textile Research Journal, 85(15): 1590-1601.
• Chen, Z. B., Sun, W., Wang, X. Y. (2005). Preliminary Study on the Flow Field in Fuel Tank and Its Visual and Simulation System. Coal Mine Machinery, 26(5): 40-41.
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• Experimental Study on Foaming Mechanism of Diesel Oil during Large-flow Rapid Refuelling Process

Abstract Views :79  |  PDF Views:0

Authors

Chang Chen ¹, Shifu Zhang ¹, Jikun Guo ¹, Qixin Zhang ¹, Jianyong Yang ¹, Zhi Han ²

Affiliations
1 Army Logistics University of PLA, Chong Qing, 401311 ., CN
2 Oil Representative Office of PLA, Beijing 100081., CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 148-153

Abstract

Modern social life and the needs of industrial development has put forward higher requirements for the flow and efficiency of refuelling process. However, the greater the filling flow, the bubble produced by diesel oil is more obvious which will reduce the fuel efficiency seriously. This article focus on the influence factors and mechanism of diesel oil foam during large-flow rapid refuelling process by setting different condition of filling experiments. It was found that the filling flow rate of 150 L/min ~ 180 L/min is suitable for achieving the balance with the combination of consideration of refuelling rate and bubble reduction. What is more, the way of increasing the diameter of refuelling gun has obvious influence in diesel bubbles reduction. In addition, "flare regular" refuelling gun produce more bubbles than "straight regular" refuelling gun which is mainly because the diesel oil in the pipeline is more turbulent. The developed model and experiment results are useful to researchers and engineers in the area of large-flow rapid refuelling process of diesel oil.

Keywords

Experimental study; foaming mechanism; diesel oil; large-flow rapid refuelling.

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References

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• Numerical Research on Flow Characteristics of Leaking Liquid in Interstitial Space of Double-wall Oil Tank

Abstract Views :84  |  PDF Views:0

Authors

Chang Chen ¹, Qixin Zhang ¹, Shifu Zhang ², Shiqiang Song ³, Zhi Han ⁴, Jianting Zhou ⁵, Ligang Zou ⁶

Affiliations
1 Oil Department, CN
2 National Engineering Research Center for Disaster & Emergency Relief Equipment, Army Logistics University of PLA, Chongqing 401 331, CN
3 Logistics Training Center of PLA Rocket Force, Hebei 075 000,, CN
4 Oil Representative Office of PLA, Beijing 100 081,, CN
5 Air Force Research Institute, Beijing 100 076,, CN
6 Weihai Yihe Specialty Equipment Mfg. Co. Ltd., Shangdong, CN

Source

Journal of Mines, Metals and Fuels, Vol 66, No 2 (2018), Pagination: 90-96

Abstract

The SF double-wall oil tank has an interstitial space with the thickness of 0.1 ~ 0.2 mm between the steel inner tank and FRP outer tank, and is equipped with a leak detection device to monitor the interstitial space for 24 hours. If internal structure of the interstitial space is designed unreasonably, the leaking liquid will be difficult to flow to the bottom of interstitial space, so that the leakage detection device cannot detect the leaking problem in time, leading to security risks during the operation process of double-wall oil tank. In this paper, the volume of fluid (VOF) model and the PISO algorithm are used to study the flow characteristics of the leaking liquid in interstitial space of double-wall oil tank based on FLUENT software. In order to reduce the computational complexity, the structure of the interstitial space of the SF double tank is simplified reasonably. It is believed that this research is valuable for the optimal design of the interstitial space structure of double-wall oil tank.

Keywords

Numerical simulation, flow characteristic, leaking liquid, interstitial space, double-wall oil tank.

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