Design and Implementation about Virtual Experiment for Lift Coefficient Mensuration

2012 ◽  
Vol 190-191 ◽  
pp. 269-272
Author(s):  
Lei Ming ◽  
Song Li ◽  
Ji Xin Yin ◽  
Tie Yu Hu ◽  
Zhi Ke Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Teaching Method ◽  
Lift Coefficient ◽  
Practical Significance ◽  
Virtual Experiment ◽  
Efficiency Ratio ◽  
Design And Implementation ◽  
Modern Computer ◽  
Experimental Teaching ◽  
Practical Teaching

As a rising practical teaching method, virtual experiment is playing an increasingly prominent role in modern teaching. The virtual experiment for lift coefficient mensuration, which is one of a series of virtual experiment software that have been accomplished based on numerical simulation and modern computer technologies by the authors, was taken as an example, the design principles, modules constitution, developing tools, and experiment courses were introduced. It is of practical significance on how to make use of virtual experiment technology to reform practical teaching and enhance energy efficiency ratio of experimental teaching.

Implementation about Virtual Experiment for Development of Local Shockwave

2014 ◽  
Vol 945-949 ◽  
pp. 246-249
Author(s):  
Xue Wei Liu ◽  
Kai Luo ◽  
Yue Ming Yang ◽  
Li Min Song ◽  
Jun Jin
Keyword(s):  
Numerical Simulation ◽  
Energy Efficiency ◽  
Design Principles ◽  
Practical Significance ◽  
Virtual Experiment ◽  
Efficiency Ratio ◽  
Modern Computer ◽  
Experimental Teaching ◽  
Computer Technologies ◽  
Practical Teaching

The virtual experiment for development of local shockwave, which is one of a series of virtual experiment software that have been accomplished based on numerical simulation and modern computer technologies by the authors, was taken as an example, the design principles, modules constitution, developing tools, and experiment courses were introduced. It is of practical significance on how to make use of virtual experiment technology to reform practical teaching and enhance energy efficiency ratio of experimental teaching.

scholarly journals Design and Implementation of Computer Aided Physical Education Platform Based on Browser/Server Architecture

2019 ◽  
Vol 14 (15) ◽  
pp. 40
Author(s):  
Zhen Zhao ◽  
Jing Yang
Keyword(s):  
Physical Education ◽  
Teaching Method ◽  
Practical Significance ◽  
Traditional Teaching ◽  
Overall Design ◽  
Design And Implementation ◽  
Teaching Content ◽  
Computer Aided ◽  
Development Technology ◽  
Education Platform

Based on the B/S mode network development technology, this paper studies the design and implementation of computer-aided physical education platform. According to requirement analysis of the platform, this study carries out the overall design and detailed design of the platform, compares and analyzes the teaching effects of computer-aided physical education platform and the traditional teaching method. The research results show that: the computer-aided physical education platform runs stably and realizes the expected design functions, it can enrich the teaching content, enhance students' initiative awareness, stimulate their interest in learning, effectively improve the teaching effect, and the paper confirms the feasibility and effectiveness of the system. This research provides a reference for the application of computer-aided physical education platform in physical education and has certain practical significance.

Design and Realization about Virtual Experiment to Mensurate Airfoil Pressure Distribution

2013 ◽  
Vol 694-697 ◽  
pp. 2818-2822
Author(s):  
Lei Ming ◽  
Shu Qiang Wang ◽  
Xiu Juan Liu ◽  
Song Li ◽  
Dun Jin
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Pressure Distribution ◽  
Virtual Experiment ◽  
Modern Computer ◽  
Computer Technologies ◽  
Multimedia Technologies ◽  
Practical Teaching

This project designed and accomplished a series of aerodynamics virtual experiment software including To Mensurate Airfoil Pressure Distribution based on Computational Fluid Dynamics, multimedia technologies, and other modern computer technologies. The results showed that the series of virtual experiment software are successful and effectual. It was concluded that virtual experiment designed scientifically and rationally can reform practical teaching.

scholarly journals ПРОЕКТУВАННЯ СУЧАСНОГО ОДЯГУ НА ОСНОВІ ВИКОРИСТАННЯ ХУДОЖНЬО-КОМПОЗИЦІЙНИХ ОЗНАК ЕКО-АРХІТЕКТУРИ

2018 ◽  
pp. 43-50
Author(s):  
О. В. Колосніченко ◽  
К. І. Кравчук ◽  
Н. І. Кудрявцева
Keyword(s):  
Structural Analysis ◽  
Computer Programs ◽  
Summer Season ◽  
Practical Significance ◽  
Basic Principles ◽  
Design And Implementation ◽  
Women's Clothing ◽  
Modern Computer ◽  
Ecological Architecture ◽  
Definition Of

Definition of artistic and compositional features and specialty of ecological architecture for improving the design of a modern collection of women's wear in the spring and summer season. To achieve this goal, analytical and associative methods of artistic and compositional features of the creative source were used, system-structural analysis of the form of analogues, questionnaire-expert and morphological analyzes; sketches and schemes are performed using modern computer programs. On the basis of the conducted research the concept of creation of universal forms of women's clothing is formed by applying aesthetic, constructive and technological features of eco-architecture in designing a modern costume. The scientific novelty of the results obtained is to systematize the basic principles of ecological architecture with their subsequent use in the process of creating harmonized forms of modern clothing. The practical significance of the work lies in the design-design and implementation in the material of the prospective collection of women's wear using artistic and compositional features of ecological architecture and taking into account modern fashion trends.

Terms of use of “edutainment” and “cloud technologies” in professional art education

2018 ◽  
pp. 132-133
Author(s):  
V. Lymarenko
Keyword(s):  
Art Education ◽  
Technological Development ◽  
Educational Process ◽  
Cloud Services ◽  
Practical Significance ◽  
Network Resources ◽  
Modern Computer ◽  
Information Products ◽  
Network Technologies ◽  
Cloud Technologies

Trends in technology lead to an increasing of their role in the development of humanity. Exactly “cloud technologies”, which are the basis for the technological development of the information society now, also they play the role of the leading tool of informatization of education, especially united with “edutainment”.During the development and implementation of software and network technologies in professional artistic education, the following issues remain unsolved: the provision of modern computer equipment and software, technical support for the stable work of information products, and the provision of selective authorized access for students to specific network resources. The methodology based on “cloud calculates” technology provides an opportunity to overcome these difficulties. And the last, but not at least, students may be attracted to the most promising areas of the development of modern information products.Actuality, practical significance, and insufficient development of these problems caused the choice of the topic of our research: “Terms of use of “edutainment” and “cloud technologies” in professional artistic education “.The aim of the research is to determine the conditions of the use of “edutainment” and “cloud technologies” in the preparation of future teachers of musical art.Methods of research: analysis of psychological and pedagogical literature in order to determine the state of development of the problem; synthesis, comparison, generalization for justifying the concepts of “edutainment” and “cloud technologies” and methods of their use in the educational process.This article deals with issues of the use of edutainment technologies and “cloud technologies”. It is offered conditions of using edutainment and “cloud technologies” in post-nonclassical professional art education on the example of subject “Musical Art”. Actual “cloud” services are analyzed and examples of their integration to educational process of professional art establishments are proposed.

scholarly journals COMPUTATIONAL FLUID DYNAMICS STUDY OF DUSTY AIR FLOW OVER NACA 63415 AIRFOIL FOR WIND TURBINE APPLICATIONS

2017 ◽  
Vol 79 (7-3) ◽  
Author(s):  
Iham F. Zidane ◽  
Khalid M. Saqr ◽  
Greg Swadener ◽  
Xianghong Ma ◽  
Mohamed F. Shehadeh
Keyword(s):  
Numerical Simulation ◽  
Wind Turbine ◽  
South African ◽  
Stokes Equations ◽  
Lift Coefficient ◽  
Turbine Blades ◽  
Aerodynamic Performance ◽  
Accurate Estimation ◽  
African Countries ◽  
Sand Particles

Gulf and South African countries have enormous potential for wind energy. However, the emergence of sand storms in this region postulates performance and reliability challenges on wind turbines. This study investigates the effects of debris flow on wind turbine blade performance. In this paper, two-dimensional incompressible Navier-Stokes equations and the transition SST turbulence model are used to analyze the aerodynamic performance of NACA 63415 airfoil under clean and sandy conditions. The numerical simulation of the airfoil under clean surface condition is performed at Reynolds number 460×103, and the numerical results have a good consistency with the experimental data. The Discrete Phase Model has been used to investigate the role sand particles play in the aerodynamic performance degradation. The pressure and lift coefficients of the airfoil have been computed under different sand particles flow rates. The performance of the airfoil under different angle of attacks has been studied. Results showed that the blade lift coefficient can deteriorate by 28% in conditions relevant to the Gulf and South African countries sand storms. As a result, the numerical simulation method has been verified to be economically available for accurate estimation of the sand particles effect on the wind turbine blades.

scholarly journals Procedure for the Selection of Rubber Compound in Rubber-Metal Springs for Vibration Isolation

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1737
Author(s):  
Milan Banić ◽  
Dušan Stamenković ◽  
Aleksandar Miltenović ◽  
Dragan Jovanović ◽  
Milan Tica
Keyword(s):  
Numerical Simulation ◽  
Constitutive Model ◽  
Vibration Isolation ◽  
Correct Selection ◽  
Virtual Experiment ◽  
Rubber Compound ◽  
Key Factor ◽  
Railway Engineering ◽  
Selection Of

The selection of a rubber compound has a determining influence on the final characteristics of rubber-metal springs. Therefore, the correct selection of a rubber compound is a key factor for development of rubber-metal vibration isolation springs with required characteristics. The procedure for the selection of the rubber compound for vibration isolation of rubber-metal springs has been proposed, so that the rubber-metal elements have the necessary characteristics, especially in terms of deflection. The procedure is based on numerical simulation of spring deflection with Bergström-Boyce constitutive model in virtual experiment, with a goal to determine which parameters of the constitutive model will lead to spring required deflection. The procedure was verified by case study defined to select rubber compound for a rubber–metal spring used in railway engineering.

scholarly journals Numerical Simulation and Hydrodynamic Performance Predicting of 2 Two-Dimensional Hydrofoils in Tandem Configuration

2021 ◽  
Vol 9 (5) ◽  
pp. 462
Author(s):  
Yuchen Shang ◽  
Juan J. Horrillo
Keyword(s):  
Numerical Simulation ◽  
Numerical Model ◽  
Resource Constraints ◽  
Lift Coefficient ◽  
Parametric Method ◽  
Experimental Results ◽  
Hydrodynamic Performance ◽  
Tandem Configuration ◽  
Artificial Neural Network Ann ◽  
Naca 0012

In this study we investigated the performance of NACA 0012 hydrofoils aligned in tandem using parametric method and Neural Networks. We use the 2D viscous numerical model (STAR-CCM+) to simulate the hydrofoil system. To validate the numerical model, we modeled a single NACA 0012 configuration and compared it to experimental results. Results are found in concordance with the published experimental results. Then two NACA 0012 hydrofoils in tandem configuration were studied in relation to 788 combinations of the following parameters: spacing between two hydrofoils, angle of attack (AOA) of upstream hydrofoil and AOA of downstream hydrofoil. The effects exerted by these three parameters on the hydrodynamic coefficients Lift coefficient (CL), Drag Coefficient (CD) and Lift-Drag Ratio (LDR), are consistent with the behavior of the system. To establish a control system for the hydrofoil craft, a timely analysis of the hydrodynamic system is needed due to the computational resource constraints, analysis of a large combination and time consuming of the three parameters established. To provide a broader and faster way to predict the hydrodynamic performance of two hydrofoils in tandem configuration, an optimal artificial neural network (ANN) was trained using the large combination of three parameters generated from the numerical simulations. Regression analysis of the output of ANN was performed, and the results are consistent with numerical simulation with a correlation coefficient greater than 99.99%. The optimized spacing of 6.6c are suggested where the system has the lowest CD while obtaining the highest CL and LDR. The formula of the ANN was then presented, providing a reliable predicting method of hydrofoils in tandem configuration.

Sign in / Sign up

Export Citation Format

Share Document