A parallel implicit hole-cutting method based on background mesh for unstructured Chimera grid

2020 ◽  
Vol 198 ◽  
pp. 104403 ◽  
Author(s):  
X.H. Chang ◽  
R. Ma ◽  
N.H. Wang ◽  
Z. Zhao ◽  
L.P. Zhang
Keyword(s):  
Cutting Method ◽  
Chimera Grid ◽  
Background Mesh

An efficient parallel Chimera grid flow solver based on implicit hole cutting method

2018 ◽  
Author(s):  
Xiaodong Hu ◽  
Zhonghua Lu ◽  
Jian Zhang ◽  
Wu Yuan ◽  
Xiazhen Liu ◽  
...  
Keyword(s):  
Cutting Method ◽  
Flow Solver ◽  
Chimera Grid

A parallel algorithm for chimera grid with implicit hole cutting method

2019 ◽  
Vol 34 (2) ◽  
pp. 169-177 ◽  
Author(s):  
Xiaodong Hu ◽  
Zhonghua Lu ◽  
Jian Zhang ◽  
Xiazhen Liu ◽  
Wu Yuan ◽  
...  
Keyword(s):  
Parallel Algorithm ◽  
Moving Boundary ◽  
Parallel Implementation ◽  
Data Communication ◽  
Grid Method ◽  
Test Cases ◽  
Cutting Method ◽  
Time Consumption ◽  
Boundary Process ◽  
Chimera Grid

The chimera grid methods have been widely used in the simulation of flow over complex configurations and unsteady moving boundary process. Lee and Baeder presented the implicit hole cutting (IHC) method, which improves the practicability and robustness of chimera grid method. But the excessive time consumption of this method restricts the scalability of parallelism. In this article, based on the parallel implementation of IHC method with structured multi-block grid, the factors which restrict the performance and efficiency are analyzed. Cartesian auxiliary grid is introduced to reduce the communication and computing cost. Finally, test cases are presented to demonstrate the effectiveness of this algorithm, and the calculation and data communication are reduced on the premise of maintaining accuracy.

Automatic chili seeds remover for household and small-medium enterprises as an alternative of hand cutting method

2021 ◽  
Author(s):  
A. Ghazali ◽  
S. M. Sharun ◽  
S. H. Y. S. Abdullah ◽  
F. A. Halim Yap ◽  
N. H. Ariffin
Keyword(s):  
Cutting Method ◽  
Small Medium Enterprises ◽  
Medium Enterprises

Flow Simulations by Enhanced Implicit-Hole-Cutting Method on Overset Grids

2014 ◽  
Vol 51 (5) ◽  
pp. 1401-1409 ◽  
Author(s):  
Jia Xu ◽  
Jinsheng Cai ◽  
Qiuhong Liu ◽  
Kun Qu
Keyword(s):  
Cutting Method ◽  
Overset Grids ◽  
Flow Simulations

scholarly journals Numerical Simulation of Rock Plate Cutting with Three Sides Fixed and One Side Free

2018 ◽  
Vol 2018 ◽  
pp. 1-21 ◽  
Author(s):  
Zhenguo Lu ◽  
Lirong Wan ◽  
Qingliang Zeng ◽  
Xin Zhang ◽  
Kuidong Gao
Keyword(s):  
Numerical Simulation ◽  
Cutting Force ◽  
Cutting Speed ◽  
Rock Cutting ◽  
Numerical Results ◽  
Peak Force ◽  
Cutting Performance ◽  
Conical Pick ◽  
Cutting Method ◽  
Cutting Angle

In order to overcome conical pick wear in the traditional rock cutting method, a new cutting method was proposed on account of increasing free surface of the rock. The mechanical model of rock plate bending under concentrated force was established, and the first fracture position was given. The comparison between experimental and numerical results indicated that the numerical method is effective. A computer code LS-DYNA (3D) was employed to study the cutting performance of a conical pick. To study the rock size influenced on the cutting performance, the numerical simulations with different thickness, width, and height of a rock plate was carried out. The numerical simulation with the different cutting parameters of cutting speed, cutting angle, and cutting position influenced on cutting performance was also carried out. The numerical results indicated that the peak force increased with the increasing thickness of rock plate. With the increasing width and height of the rock plate, the peak force decreased and then became stable. Besides, the peak force decreased with the increasing of cutting position lxp/lx. Moreover, the peak force increased and then decreased with the increasing of cutting angle. The cutting speed has nonsignificant influence on the peak force. The strong exponential relationship was obtained between the peak force and cutting position, thickness, height, and width of the rock plate at a confidence level of 0.95. A binomial relationship was observed between the peak force and cutting angel. The cutting force comparison between traditional rock cutting and rock plate cutting indicated that the new cutting method can effectively reduce peak cutting force.

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