Design of the Shape of Blade of the Semi-Submersible Ocean Current Power Generation Device Based on Fluent

2012 ◽  
Vol 268-270 ◽  
pp. 1002-1005
Author(s):  
Li Zhen Zhang ◽  
Xiao Long Cao ◽  
Feng Zhen An
Keyword(s):  
Power Generation ◽  
Ocean Current ◽  
Generation Efficiency ◽  
The Core ◽  
Blade Shape ◽  
Fluent Software ◽  
Marine Currents ◽  
Simulation Results ◽  
Power Generation Device

The semi-submersible ocean current power generation device is a new power generation device which can absorb the energy of marine currents. The shape of blade determines the absorbing efficiency which is one of the core technologies. To get force status of the different shape of the blade under the currents by using Fluent software simulate these blades. Then analyze the impacts of the blade shape on the power generation efficiency, the simulation results provide guidance for the design of the actual blades.

scholarly journals Optimal Design for the Diffusion Plate with Nanoparticles in a Diffusive Solar Cell Window by Mie Scattering Simulation

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Ruei-Tang Chen ◽  
Chih-Chieh Kang ◽  
Jeng-Feng Lin ◽  
Tzu-Chi Lin ◽  
Chih-Wen Lai
Keyword(s):  
Power Generation ◽  
Solar Cell ◽  
Optimal Design ◽  
Size Distribution ◽  
Mie Scattering ◽  
Color Temperature ◽  
Generation Efficiency ◽  
Large Size ◽  
Cell Window ◽  
Simulation Results

A diffusive solar cell window comprises a diffusion plate with TiO2nanoparticles sandwiched between two glass layers. It is a simple, inexpensive, easy-to-made, and highly reliable transparent solar energy module. To improve its power generation efficiency as well as maintain indoor natural lighting, we examined the scattering mechanism in the diffusion plate with TiO2nanoparticles within a diffusive solar cell window by Mie scattering simulations. In this work, a multiwavelength ASAP ray tracing model for a diffusive solar cell window with acceptable accuracy was developed to investigate the influence of the diffusion plate design parameter, mainly concentration of a diffusion plate with determined particle size distribution, on power generation efficiency and color shift of transmitted sun light. A concept of “effective average radius” was proposed to account for the equivalent scattering effect of a size distribution of quasispherical particles. Simulation results demonstrated that both the transmitted light and its correlated color temperature decreased as the concentration increased for a large-size diffusive solar cell window. However, there existed a maximum power generation efficiency at around 160 ppm concentration. The optimal design for a large-size diffusion plate inside a diffusive solar cell window by taking indoor lighting into account was suggested based on the simulation results.

Ocean Current Model Using SINS/GPS/DVL Integrated Navigation

2013 ◽  
Vol 316-317 ◽  
pp. 419-422 ◽  
Author(s):  
Yue Yang Ben ◽  
Xin Yuan Liu ◽  
Zhong Jun Zhu ◽  
Heng Du
Keyword(s):  
Kalman Filter ◽  
Current Model ◽  
Current Speed ◽  
Ocean Current ◽  
Integrated Navigation ◽  
Relative Speed ◽  
The Core ◽  
Simulation Results ◽  
Navigation Accuracy ◽  
Navigation Method

The navigation system of the AUV usually takes SINS as the core, and is supplemented by GPS and DVL. While the output speed of the DVL is relative to the water, and the relative speed is taken as the observed quantity to assist SINS, the navigation accuracy will be declined. In order to solve the problem, SINS/GPS/DVL integrated navigation method is proposed to estimate the ocean current model. In this method, the Kalman filter is used to estimate the ocean current based on the ocean current model, and then the speed relative to the seabed is gained and taken as the measurements for assisting the SINS. Simulation results show that the proposed method can estimate accurately the ocean current speed.

Design and Implementation of Multi-Directional Solar Irradiance Measurement System Based on DSP

2013 ◽  
Vol 380-384 ◽  
pp. 889-894 ◽  
Author(s):  
De Jun Li ◽  
Zhi Hu
Keyword(s):  
Power Generation ◽  
Measurement System ◽  
Solar Irradiance ◽  
Practical Significance ◽  
Solar Pv ◽  
Solar Panels ◽  
Generation Efficiency ◽  
The Core ◽  
Irradiance Measurement ◽  
Pv Modules

This paper introduces the design of the all-round solar irradiance measurement system which take the DSP processor as the core. The data which is collected from the system is used to analyze the photovoltaic power generation efficiency in the building integrated photovoltaic (BIPV). BIPV has become an important development direction of the current solar PV technology. The core is the solar PV modules which combined with the building exterior. The BIPV require the installation of PV modules must comply with the appearance of the building, which led to the solar panels cannot be installed in the azimuth and elevation where the PV modules can generate the maximum power in theory. So it is a good practical significance to assess the power generation efficiency of solar photovoltaic modules in the building.

scholarly journals A modular framework to generate robust biped locomotion: from planning to control

2021 ◽  
Vol 3 (9) ◽  
Author(s):  
Mohammadreza Kasaei ◽  
Ali Ahmadi ◽  
Nuno Lau ◽  
Artur Pereira
Keyword(s):  
Numerical Simulations ◽  
Predictive Control ◽  
Biped Locomotion ◽  
Input Output ◽  
Dynamics Model ◽  
Biped Robots ◽  
The Core ◽  
Simulation Results ◽  
Reference Trajectories ◽  
Modular Framework

AbstractBiped robots are inherently unstable because of their complex kinematics as well as dynamics. Despite many research efforts in developing biped locomotion, the performance of biped locomotion is still far from the expectations. This paper proposes a model-based framework to generate stable biped locomotion. The core of this framework is an abstract dynamics model which is composed of three masses to consider the dynamics of stance leg, torso, and swing leg for minimizing the tracking problems. According to this dynamics model, we propose a modular walking reference trajectories planner which takes into account obstacles to plan all the references. Moreover, this dynamics model is used to formulate the controller as a Model Predictive Control (MPC) scheme which can consider some constraints in the states of the system, inputs, outputs, and also mixed input-output. The performance and the robustness of the proposed framework are validated by performing several numerical simulations using MATLAB. Moreover, the framework is deployed on a simulated torque-controlled humanoid to verify its performance and robustness. The simulation results show that the proposed framework is capable of generating biped locomotion robustly.

The Influence of the Convective Terms Discretization Scheme on the Simulation Results of Architectural Numerical Wind Tunnel

2012 ◽  
Vol 204-208 ◽  
pp. 4884-4887
Author(s):  
Jian Feng Wu ◽  
Cai Hua Wang ◽  
Chang Li Song
Keyword(s):  
Numerical Simulation ◽  
Wind Tunnel ◽  
Building Structures ◽  
Discretization Scheme ◽  
Shape Coefficient ◽  
Fluent Software ◽  
Actual Operation ◽  
Simulation Results ◽  
Load Shape ◽  
Numerical Wind Tunnel Method

The numerical simulation of construction is to obtain the desired accuracy. It depends on the theoretical basis of the calculator and selection of the various important factors in the actual operation. For this problem, this paper adopting the current code for the design of building structures as the comparison standard, using the FLUENT software, taking the numerical simulation results of a high building’s wind load shape coefficient of for example, discussing the influence of four kinds of the convective terms discretization scheme, respectively the first-order upwind, the second order upwind , power law and Quadratic upwind interpolation for convective kinematics, on the simulation results of architectural numerical wind tunnel, provides the reference for the rational use of numerical wind tunnel method.

Evaluation of the Power Generation Efficiency of a Hot Spring Heat Binary Power Generation System

2016 ◽  
Vol 42 (2) ◽  
pp. 76-82
Author(s):  
Akira Saito ◽  
Yuta Sasaki ◽  
Kazuhide Kimbara ◽  
Masao Sudou
Keyword(s):  
Power Generation ◽  
Hot Spring ◽  
Generation System ◽  
Generation Efficiency ◽  
Power Generation System
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