scholarly journals Overview of Three-dimensional Geological Modeling Technology

IERI Procedia ◽  
2012 ◽  
Vol 2 ◽  
pp. 921-927 ◽  
Author(s):  
Xiao Fang Zu ◽  
Wei Sheng Hou ◽  
Bao Yi Zhang ◽  
Wei Hua Hua ◽  
Jin Luo
Keyword(s):  
Three Dimensional ◽  
Geological Modeling ◽  
Modeling Technology

Research on the Three-Dimensional Geological Modeling Based on Subdivision Surface Modeling Technology

2012 ◽  
Vol 500 ◽  
pp. 646-651 ◽  
Author(s):  
Long Quan Chen ◽  
Deer Liu
Keyword(s):  
Three Dimensional ◽  
Geological Structure ◽  
Surface Model ◽  
Subdivision Surfaces ◽  
Geological Modeling ◽  
Subdivision Surface ◽  
Modeling Technology ◽  
Modeling Process ◽  
Data Coherence ◽  
Multi Body

Ased on the analysis that the application of the subdivision surfaces modeling technology is feasible in the three-dimensional geological modeling, and for the problem of data coherence between the various public faces in the multi-body modeling process of the three-dimensional geological modeling, the border stitching algorithm is proposed based on an improved butterfly subdivision strategy, and makes the different subdivision degrees of model smoothing out. The technology of view depend subdivision surface is introduced into three-dimensional geological surface model construction, and to help the establishment of three-dimensional geological structure of the LOD model. Finally, the feasibility and effectiveness of the method is verified by taking a certain city area as the studying area and carrying out experiment of the application of the method presented by this paper.

Research on dynamic updating of three dimensional geological modeling based on the OO-Solid model

2008 ◽  
Vol 14 (3) ◽  
pp. 420-424
Author(s):  
En-ke Hou ◽  
Nian-dong Deng ◽  
Zhi-hua Zhang ◽  
Zhou Zhao
Keyword(s):  
Three Dimensional ◽  
Solid Model ◽  
Geological Modeling ◽  
Dynamic Updating

Research on design and numerical optimization of bowed-twisted-swept cascade of low aspect ratio hydraulic turbine

2021 ◽  
pp. 095440622110303
Author(s):  
Yan Gong ◽  
Cong Wang ◽  
Meng Lin ◽  
Zhiguang Gao ◽  
Xiaodong Zhang
Keyword(s):  
Pressure Drop ◽  
Optimization Design ◽  
Three Dimensional ◽  
Hydraulic Turbine ◽  
Multi Objective Optimization ◽  
Modeling Technology ◽  
Low Aspect Ratio ◽  
Turbine Performance ◽  
Output Torque ◽  
Twisted Blade

The bowed-twisted-swept modeling technology of three-dimensional blade has been widely used in the gas impeller machinery and achieved good results. This paper introduces the two-dimensional flow theory and the bowed-twisted-swept modeling ideology into hydraulic turbine design. Simultaneously combined with the popular NSGA-II multi-objective optimization algorithm, a complete set of hydraulic turbine cascade design method was proposed. Taking the last-stage low aspect ratio hydraulic cascade of Ф175 type turbine as an example, the parametric model of this cascade was reconstructed by a high-precision automatic bridge coordinate measuring machine. The multi-objective optimization design of three-dimensional modeling of cascade was completed with the single-stage turbine output torque, efficiency and pressure drop as the objective targets. Finally the influence of the bowed-twisted-swept modeling technology on the hydraulic turbine performance was explored in detail by a professional rotating machinery CFD software. Numerical analysis shows that the twisted blade design achieves a 1.5 times increase in torque and 2 to 4 times increase in pressure diff at same working condition. Moreover, when bowing optimization design and sweeping optimization design are applied on the twisted blade individually, the output torque and the stage efficiency of the hydraulic turbine are respectively improved, and when both two methods are simultaneously applied on the twisted blade, it is beneficial to reduce the pressure drop loss. However, it is noticeable that when the bowed-swept modeling technology used in a straight blade using almost have no effect on the turbine performance.

scholarly journals Summary on Several Key Techniques in 3D Geological Modeling

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Gang Mei
Keyword(s):  
Mesh Generation ◽  
Spatial Interpolation ◽  
Three Dimensional ◽  
Geological Modeling ◽  
3D Geological Modeling ◽  
Surface Intersection ◽  
Key Techniques

Several key techniques in 3D geological modeling including planar mesh generation, spatial interpolation, and surface intersection are summarized in this paper. Note that these techniques are generic and widely used in various applications but play a key role in 3D geological modeling. There are two essential procedures in 3D geological modeling: the first is the simulation of geological interfaces using geometric surfaces and the second is the building of geological objects by means of various geometric computations such as the intersection of surfaces. Discrete geometric surfaces that represent geological interfaces can be generated by creating planar meshes first and then spatially interpolating; those surfaces intersect and then form volumes that represent three-dimensional geological objects such as rock bodies. In this paper, the most commonly used algorithms of the key techniques in 3D geological modeling are summarized.

scholarly journals Development of Principles and Method for Three-dimensional Geological Modeling

2019 ◽  
Vol 30 (4) ◽  
pp. 181-195
Author(s):  
Tatsuya NEMOTO ◽  
Susumu NONOGAKI ◽  
Shinji MASUMOTO
Keyword(s):  
Three Dimensional ◽  
Geological Modeling

scholarly journals THREE-DIMENSIONAL GEOLOGICAL MODELING OF OIL SATURATION OF PRODUCTIVE OIL RESERVOIR BASED ON LEVERETT J-FUNCTION

2016 ◽  
pp. 7-10
Author(s):  
Ya. O. Antipin
Keyword(s):  
Porous Media ◽  
Transition Zone ◽  
Reliable Method ◽  
Three Dimensional ◽  
Hydrodynamic Modeling ◽  
Oil Reservoirs ◽  
Oil Reservoir ◽  
Geological Modeling ◽  
Oil Saturation ◽  
The Impact

The author suggests and describes the most optimal, reliable method for modeling saturation of the productive oil reservoirs The method takes into account the impact of capillary forces in porous media, water-oil transition zone. This method most fully meets the modern requirements of threedimensional geological and hydrodynamic modeling.

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