Experimental and numerical simulation research on fire suppression efficiency of dry powder mediums containing molybdenum flame retardant additive

The micro particle brings much harm to some industrials, agriculture and human activities. The mechanical models of micro particle adhesion to the surface and the control, disposal technology have become very important for prevention from particle aggradations. For the sake of deeply comprehending and researching the adhesion mechanism as well as kinematics characteristic, numerical simulation of particle adhesion was made based on compute simulation package, the analysis of results and relevant comparison demonstrate that it can well simulate actual state and the results of simulation show that the capillary force (Fc) is the biggest, by contrast, the electrostatic force (Fes) is the smallest. Further more, it has some valuable instructions and helpful references for control of micro-particle adhesion to surface. At last, the outlook of issue was put forward.

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Advances of numerical simulation research on the emulsion flow field of wet skin-pass mill

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/631/1/012110 ◽

2021 ◽

Vol 631 ◽

pp. 012110

Author(s):

Haijun Qiao

Keyword(s):

Numerical Simulation ◽

Flow Field ◽

Simulation Research ◽

Skin Pass ◽

Emulsion Flow ◽

Pass Mill

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Numerical Simulation Research on the Shape of Top Coal Drawn-Body in Gently Inclined Seam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.468-471.2248 ◽

2012 ◽

Vol 468-471 ◽

pp. 2248-2254

Author(s):

Qiang Li ◽

Wan Kui Bu ◽

Hui Xu ◽

Xiao Bo Song

Keyword(s):

Numerical Simulation ◽

Numerical Model ◽

Random Medium ◽

Body Movement ◽

The Other ◽

Simulation Research ◽

Research Results ◽

Shape Equation ◽

The Difference ◽

Meso Scale

The numerical model of top coal drawing in gently inclined seam is built based on PFC2d software. By comparing with the theory of drawn-body movement law, it can be obtained that the shape of top coal drawn-body accords with the theory of random medium movement. The research results show that the form of the shape equation of top coal drawn-body is uniform while the top coal caving angle is different. On the other hand, with the difference of top coal caving angle and drawing height, the shape of top coal drawn-body is differential at the meso scale, which depends on the parameters of the shape equation of top coal drawn-body.

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Numerical simulation research on dynamical variation of permeability of coal around roadway based on gas-solid coupling model for gassy coal

International Journal of Mining Science and Technology ◽

10.1016/j.ijmst.2018.09.004 ◽

2018 ◽

Vol 28 (6) ◽

pp. 925-932 ◽

Cited By ~ 6

Author(s):

Tao Yang ◽

Bo Li ◽

Qiusheng Ye

Keyword(s):

Numerical Simulation ◽

Coupling Model ◽

Simulation Research

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Numerical Simulation Research on Springback Controlling Methods of Aluminum Alloy Panel during Hydroforming

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.851.163 ◽

2016 ◽

Vol 851 ◽

pp. 163-167

Author(s):

Dong Yan Lin ◽

Yi Li

Keyword(s):

Numerical Simulation ◽

Aluminum Alloy ◽

Process Parameters ◽

Orthogonal Experiment ◽

Blank Holder Force ◽

Scoring Method ◽

Simulation Research ◽

Blank Holder ◽

Hydroforming Process

The hydroforming process of the aluminum alloy panel was simulated by the software DYNAFORM. The effects of process parameters (blank holder force, depth of panel and height of draw bead) on springback of the aluminum alloy were investigated. The max springback of the panel was analyzed by weighted scoring method. Then the process parameters were synthetically optimized for the max positive and negative springback. The results showed that the height of draw bead affects obviously the comprehensive springback of the panel. The optimization of the process parameters obtained by the orthogonal experiment can effectively reduce the max springback of the panel.

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