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Zhu Li, Chengen Qi, Rui Gao, Bin Yu, Yiran Zhu, Hong Zhang and Jingyu Zhang
Fracturing hard roofs by ground hydraulic action is an important control technology for the strong mine pressure in the stope. In this paper, a new simulation method, ?separate + interface,? is proposed, and two physical simulation experiments are conduc...
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Xiaoshun Zhao, Zhuangzhuang Hou, Jizong Zhang, Huali Yu, Jianjun Hao and Yuhua Liu
In order to improve the quality of transplanting devices and solve the problems of the poor effect on soil moisture conservation and more weeds easily growing due to the high mulching-film damage rate with an excessive number of hole openings, we develop...
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Ning Zhang, Anye Cao, Weiwei Zhao, Qi Hao, Guowei Lv and Baixuan Wu
There is a very thick water-bearing key strata above the coal seam in the Binchang mining area. When the mining scale is large, it easily breaks and leads to rockburst with a surge of water gushing in the panel. Adopting the layout pattern of a small pan...
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Zhao Ma, Junjie Ye, Xin Zhang and Wenhua Ye
To analyze the rock-breaking characteristics of an arcing-blade cutter in cutting red sandstone, a two-cutter cutting model was established based on the finite element method. Then, the cutting processes of the arcing-blade cutter at penetrations of 2 mm...
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Peng-Bo Zheng, Zhou-Hao Zhang, Hong-Sheng Zhang and Xue-Yi Zhao
Herein, a numerical model is proposed to simulate the nonlinear wave propagation from deep to shallow water and wave breaking phenomena. In the numerical model, the governing equations selected, in which the momentum equations were added to the eddy-visc...
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Boxiang Zhang, Hongxiang Ren, Shaoyang Qiu, Xiao Yang, Gongming Liao and Xiao Liang
In order to reduce the cost of navigation training in the waters of ice zones and improve the effectiveness of the training process, a method for simulating sea ice fragmentation in an ice zone navigation simulator is proposed. The Voronoi diagram algori...
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William Lambert, Stefano Brizzolara and Craig Woolsey
Near-surface simulation methods for shallowly submerged underwater vehicles are necessary for the population of a variety of free-surface-affected, coefficient-based maneuvering and seakeeping models. Simulations vary in complexity and computational cost...
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Jin Zhang, Min Xia, Wei Chen, Dong Yuan, Chongyou Wu and Jiping Zhu
The desirable sowing period for winter wheat is very short in the rice-wheat rotation areas. There are also lots of straw left in harvested land. Deep rotary tillage can cover rice straw under the surface to increase soil organic matter. Clarifying the e...
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Yi Wang, Bin Guo, Fengmei Jing and Yunlei Mei
In order to gain a more comprehensive understanding of the influence of winglets on the hydrodynamic performance and flow field characteristics of tidal current energy turbines, two different shapes of winglets are designed, and numerical simulation resu...
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Haoguang Zhang, Hao Wang, Qi Li, Fengyu Jing and Wuli Chu
The aim of this research was to explore the mechanisms underlying the effect of self-circulating casing treatment with different circumferential coverage ratios on the aerodynamic performance of a transonic centrifugal compressor. A three-dimensional uns...
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