Development of a virtual reality simulator replacingthe check valve on christmas tree

The article describes the process of designing and creating a software environment that allows in automatic mode to create a realistic landscape. A review of existing approaches to landscape generation is carried out, which have a set of disadvantages taken into account when developing a software environment. A diagram of components and main classes is described. The developed subroutine that implements the polygon mesh generation algorithm provides an interface for creating and editing a mesh of hexagons on a plane, used for simplified work with biomes, as well as detailing the boundaries of polygons to give the landscape elements of randomness and, as a result, realism. The process uses the Diamond Square noise generation algorithm. The docking algorithm is designed to reduce the gaps between the heights of different biomes. The erosion algorithm uses particles generated on a height mapto carry soil particles in accordance with physical laws. The user interface of the application and the results of the algorithms are presented.

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Finite Element Mesh Generator Applying Constraints’ Propagation and Isoparametric Mapping

ASME 1991 Computers in Engineering Conference: Volume 2 — Finite Elements/Computational Geometry; Computers in Education; Robotics and Controls ◽

10.1115/cie1991-0122 ◽

1991 ◽

Author(s):

J. Rodriguez ◽

M. Him

Keyword(s):

Finite Element ◽

Mesh Generation ◽

Element Model ◽

Finite Element Mesh ◽

Fe Model ◽

Element Analysis ◽

Element Mesh ◽

Mesh Generator ◽

Generation Algorithm ◽

Essential Input

Abstract This paper presents a finite element mesh generation algorithm (PREPAT) designed to automatically discretize two-dimensional domains. The mesh generation algorithm is a mapping scheme which creates a uniform isoparametric FE model based on a pre-partitioned domain of the component. The proposed algorithm provides a faster and more accurate tool in the pre-processing phase of a Finite Element Analysis (FEA). A primary goal of the developed mesh generator is to create a finite element model requiring only essential input from the analyst. As a result, the generator code utilizes only a sketch, based on geometric primitives, and information relating to loading/boundary conditions. These conditions represents the constraints that are propagated throughout the model and the available finite elements are uniformly mapped in the resulting sub-domains. Relative advantages and limitations of the mesh generator are discussed. Examples are presented to illustrate the accuracy, efficiency and applicability of PREPAT.

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Implementation of a feature-constraint mesh generation algorithm within a GIS

Computers & Geosciences ◽

10.1016/j.cageo.2012.06.004 ◽

2012 ◽

Vol 49 ◽

pp. 46-52 ◽

Cited By ~ 11

Author(s):

Thomas J. Heinzer ◽

M. Diane Williams ◽

Emin C. Dogrul ◽

Tariq N. Kadir ◽

Charles F. Brush ◽

...

Keyword(s):

Mesh Generation ◽

Generation Algorithm

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Three Dimensional Entity Mesh Generation Algorithm

Journal of Mechanical Engineering ◽

10.3901/jme.2009.11.266 ◽

2009 ◽

Vol 45 (11) ◽

pp. 266 ◽

Cited By ~ 1

Author(s):

Wenming ZHANG

Keyword(s):

Mesh Generation ◽

Three Dimensional ◽

Generation Algorithm

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Effect of Osteoporosis on Natural Frequencies in Mouse Femur: Vibration Test and Micro-CT Based Finite Element Analysis

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.326-328.851 ◽

2006 ◽

Vol 326-328 ◽

pp. 851-854 ◽

Cited By ~ 2

Author(s):

Yoon Hyuk Kim ◽

Chang Hwan Byun ◽

Taek Yul Oh

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Mesh Generation ◽

Natural Frequencies ◽

Treated Group ◽

Vibration Test ◽

Micro Ct ◽

Element Analysis ◽

Generation Algorithm ◽

The Finite Element Analysis

In this study, the change of the natural frequencies in mouse femurs with osteoporosis was investigated based on a vibration test and a finite element. Three groups of the femurs include the osteoporotic group, the treated group and the normal group. In the vibration test, the natural frequencies were measured by the mobility test. For the finite element analysis, the micro finite element model of the femur was reconstructed using the Micro-CT images and the Voxel mesh generation algorithm. From the results, the averaged natural frequencies in the osteoporotic group were the highest, followed by those in the treated group. The finite element models were validated within 15% errors by comparing the natural frequencies in the finite element analysis with those in the vibration test. The developed Micro-CT system, the Voxel mesh generation algorithm, the presented finite element analysis, and vibration test could be useful for the investigation of the structural change of the bone tissue, and the diagnosis and the treatment in the osteoporosis.

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Content-based mesh generation algorithm

Proceedings EC-VIP-MC 2003. 4th EURASIP Conference focused on Video/Image Processing and Multimedia Communications (IEEE Cat. No.03EX667) ◽

10.1109/vipmc.2003.1220458 ◽

2004 ◽

Author(s):

L. Konyha ◽

B. Enyedi ◽

S.M. Tran ◽

K. Fazekas

Keyword(s):

Mesh Generation ◽

Generation Algorithm

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A Piezoelectric Micropumping Device

ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1 ◽

10.1115/mnhmt2009-18512 ◽

2009 ◽

Author(s):

M. Yakut Ali ◽

Cuifang Kuang ◽

Jamil Khan ◽

Guiren Wang

Keyword(s):

Liquid Water ◽

Acoustic Streaming ◽

Check Valve ◽

Pressure Head ◽

Noise Generation ◽

Local Velocity ◽

Electrical Field ◽

Quantitative Results ◽

Applied Electrical Field ◽

Lower Noise

A dynamic micropumping device has been developed, which is based on acoustic streaming generated by a piezoelectric microtransducer actuated in d31 mode without any check valve. Piezoelectric microtransducers immersed in liquid (water) are used as actuators due to some of their unique properties such as lower noise generation and ease of miniaturization. Quantitative results of maximum local velocity are presented for different tip configuration of the same actuator for comparison. In addition, this work also demonstrates the quantitative measures of the pumping performance such as the pressure head generated as a function of different relevant parameters such as applied electrical field, AC frequency and length of the actuator.

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