The Experts below are selected from a list of 12483318 Experts worldwide ranked by ideXlab platform
Jun Park - One of the best experts on this subject based on the ideXlab platform.
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ISUVR - Augmented Reality Based Re-formable Mock-up for Design Evaluation
2008 International Symposium on Ubiquitous Virtual Reality, 2008Co-Authors: Jun ParkAbstract:Rapid prototyping allows for evaluation of design product in a short period of time. Designers or CEOs may perceive the size and appearance of the product by touching the automatically constructed physical objects produced through rapid prototyping. However, it is usually impossible to change its color, texture, and user interface. In this paper, we introduce 'Augmented Reality based Re-formable Mock-up', which enables interactive changes of shapes of products as well as colors, textures, and user interfaces. The shapes of the physical objects are re-formable by assembling different parts to the main body of the Mock-up. Augmented Reality technologies were used to alter the appearance of the Mock-up by rendering the 3D models, colors, and interfaces accordingly. The re-assembled Mock-up was detected by comparing the edges of the Mock-up with those of candidate 3D models. Skin detection was used in order to render the hand region on the top of rendered virtual object. Fingertip tracking algorithm was also implemented so that the users may manipulate the design product using their fingertips. Developed AR-based re-formable Mock-up is expected to be used for realistic design evaluation and CEO presentations.
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ISMAR - ARMO: Augmented Reality based Reconfigurable Mock-up
2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality, 2007Co-Authors: Yoon-suk Jin, Yang-wook Kim, Jun ParkAbstract:Rapid prototyping allows for evaluation of design product in a short period of time. Designers or CEOs may perceive the size and appearance of the product by touching the automatically constructed physical objects produced through rapid prototyping. In this paper, we introduce 'augmented reality based reconfigurable Mock-up', which enables interactive changes of shapes of products as well as colors, textures, and user interfaces. The shapes of the physical objects are reconfigurable by assembling different parts to the main body of the Mock-up. Augmented reality technologies were used to alter the appearance of the Mock-up by rendering the 3D models, colors, and interfaces accordingly. Developed AR-based reconfigurable Mock-up is expected to be used for realistic design evaluation and CEO presentations.
Marco Carlo Masoero - One of the best experts on this subject based on the ideXlab platform.
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The INRiM thermo-hydraulic Mock-up for thermal energy measurement devices: Design, construction and metrological characterization
Energy Procedia, 2015Co-Authors: Carlo Marinari, Fabio Saba, Federico Grisotto, Marina Orio, Marco Carlo MasoeroAbstract:At the National Institute of Metrological Research (INRiM), the first European thermo-hydraulic simulator (Mock-up) for testing both traditional and innovative thermal energy measurement devices and heat cost allocators has been recently built up, in the context of the EU Seventh Framework Programme FP7-SME-2012. The INRiM Mock-up is an automatically reconfigurable thermo-hydraulic circuit equipped with a sufficient number of sensors aimed at measuring all the physical quantities involved in direct heat metering. It allows simulating typical central heating systems with several types of water radiators as heat exchangers and characterized by different distribution circuit topologies. The paper describes the INRiM thermo-hydraulic Mock-up, highlighting its design features and metrological capabilities and discussing the first measurement results.
P. Aubert - One of the best experts on this subject based on the ideXlab platform.
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MILIPOSO, Mock-up of the Diagrid and the Coupling Pipes in Support of the ASTRID SFR Program
2018Co-Authors: D. Guenadou, P. Aubert, J.-p. DescampsAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium, ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration). From the 90's EFR project, the Phoenix and Super-Phoenix reactors operation feedback, the CEA has acquired a very significant experience about Sodium Fast Reactors (SFR). A new generation of simulation codes is used for the reactor design and the safety issues. Due to the physical complexity, the models need experimental validations in reduced scaled Mock-up. In those purposes, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache to study different ASTRID Mock-ups under various operating conditions. Currently, 4 Mock-ups are identified the MICAS model devoted to study the free surface and the flow pattern in the upper plenum, the MICONOS Mock-up dedicated to the investigation of natural convection issue in the entire pool reactor, the MISHOCO model used to analyze specific issues at a higher scale in the upper plenum, and the MILIPOSO Mock-up dedicated to the study of diagrid flows and the primary coupling pipes between the pump and the diagrid.This article presents the MILIPSO model the identified ASTRID reactor issues, the sizing, the design and the instrumentation. Dimensionless analysis was employed to define the reduced scale and the experimental operating conditions regarding the specific issues to investigate. This Mock-up is built in transparent polymer to carry out some optical measurements such as laser velocimetry and fast video. It was designed as versatile as possible to study the effect of the dimensionless numbers on the flow pattern. Some geometrical features were simplified because of the reduced scale. The hexagonal assemblies were replaced by cylindrical tubes. To observe the right flow-rate map at the diagrid exit, different sized diaphragms were used at the assemblies outlet. The experimental program includes nominal and accidental operating conditions, cavitation studies in the primary coupling pipes, gas accumulation investigations in the diagrid. The instrumentation is based on pressure sensors at various model locations, laser Doppler velocimetry and Particles Image Velocimetry to measure respectively the velocity in the diagrid and in the primary coupling pipes.
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Plateau facility in support to ASTRID and the SFR program : an overview of the first Mock-up of the ASTRID upper plenum , MICAS
2015Co-Authors: D. Guenadou, I. Tkatschenko, P. AubertAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium. This sodium fast neutron reactor called ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration) is a 600 MWe. It is a pool reactor type and integers cutting edge technologies. Developments are in progress especially for the vessel and the apparatus. Experiments are needed for both validation of numerical codes and specific studies. In this way, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache. Different Mock-ups can be connected to this loop to study the different issues at various reactor conditions. Currently, 4 Mock-ups have been identified: the internal vessel, the entire pool reactor, the link between the external and the internal vessel, a part of the internal vessel at a higher scale to study specific issues. The MICAS Mock-up is dedicated to study the flow regime of the internal vessel (hot plenum), both for code validation and also engineering design development. It has been designed at a reduced scale and integers as hydraulic obstacles all the apparatus immersed in the internal vessel. This Mock-up has been built in transparent polymer to carry out some optical measurements as laser velocimetry. Numerical studies with StarCCM+ has been engaged to determine the general flow pattern in a way to identify the area of interest for detailed phenomenological studies in order to define optimised instrumentation mapping. This article is dedicated to present PLATEAU facility and the experimental program on the MICAS Mock-up. In the first part, the ASTRID reactor concept is briefly presented. Then the PLATEAU experimental facility is descripted in detail. The issues of the internal vessel are summed-up and the MICAS Mock-up is presented. Then some numerical calculation results are showed to illustrate the flow in the internal vessel.
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Plateau facility in support to ASTRID and the sfr program: an overview of the first Mock-up of the ASTRID upper plenum, MICAS
2015Co-Authors: D. Guenadou, I. Tkatschenko, P. AubertAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium, ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration). It is a 600MWe pool type reactor integrating cutting edge technologies.Developments are in progress especially for the vessel and the apparatus. Experiments are needed for both validation of numerical codes and specific studies. In this way, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache. Different Mock-ups can be connected to this loop to study the different issues at various reactor conditions. Currently, 4 Mock-ups are identified the internal vessel, the entire pool reactor, the link between the external and the internal vessel, a part of the internal vessel at a higher scale to study specific issues.The MICAS Mock-up at 1/6 scale is dedicated to study the flow regime of the internal vessel (hot plenum), both for code validation and also engineering design development.This Mock-up has been built in transparent polymer to carry out some optical measurements as laser velocimetry. Numerical studies have been engaged to determine the general flow pattern in a way to identify the area of interest for detailed phenomenological studies.
Christophe Le Roy - One of the best experts on this subject based on the ideXlab platform.
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A distributed Approach for Access and Visibility Task with a Manikin and a Robot in a Virtual Reality Environment
IEEE Transactions on Industrial Electronics, 2003Co-Authors: Patrick Chedmail, Damien Chablat, Christophe Le RoyAbstract:This paper presents a new method, based on a multi-agent system and on a digital Mock-up technology, to assess an efficient path planner for a manikin or a robot for access and visibility task taking into account ergonomic constraints or joint and mechanical limits. In order to solve this problem, the human operator is integrated in the process optimization to contribute to a global perception of the environment. This operator cooperates, in real-time, with several automatic local elementary agents. The result of this work validates solutions through the digital Mock-up; it can be applied to simulate maintenability and mountability tasks.
D. Guenadou - One of the best experts on this subject based on the ideXlab platform.
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MILIPOSO, Mock-up of the Diagrid and the Coupling Pipes in Support of the ASTRID SFR Program
2018Co-Authors: D. Guenadou, P. Aubert, J.-p. DescampsAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium, ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration). From the 90's EFR project, the Phoenix and Super-Phoenix reactors operation feedback, the CEA has acquired a very significant experience about Sodium Fast Reactors (SFR). A new generation of simulation codes is used for the reactor design and the safety issues. Due to the physical complexity, the models need experimental validations in reduced scaled Mock-up. In those purposes, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache to study different ASTRID Mock-ups under various operating conditions. Currently, 4 Mock-ups are identified the MICAS model devoted to study the free surface and the flow pattern in the upper plenum, the MICONOS Mock-up dedicated to the investigation of natural convection issue in the entire pool reactor, the MISHOCO model used to analyze specific issues at a higher scale in the upper plenum, and the MILIPOSO Mock-up dedicated to the study of diagrid flows and the primary coupling pipes between the pump and the diagrid.This article presents the MILIPSO model the identified ASTRID reactor issues, the sizing, the design and the instrumentation. Dimensionless analysis was employed to define the reduced scale and the experimental operating conditions regarding the specific issues to investigate. This Mock-up is built in transparent polymer to carry out some optical measurements such as laser velocimetry and fast video. It was designed as versatile as possible to study the effect of the dimensionless numbers on the flow pattern. Some geometrical features were simplified because of the reduced scale. The hexagonal assemblies were replaced by cylindrical tubes. To observe the right flow-rate map at the diagrid exit, different sized diaphragms were used at the assemblies outlet. The experimental program includes nominal and accidental operating conditions, cavitation studies in the primary coupling pipes, gas accumulation investigations in the diagrid. The instrumentation is based on pressure sensors at various model locations, laser Doppler velocimetry and Particles Image Velocimetry to measure respectively the velocity in the diagrid and in the primary coupling pipes.
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Plateau facility in support to ASTRID and the SFR program : an overview of the first Mock-up of the ASTRID upper plenum , MICAS
2015Co-Authors: D. Guenadou, I. Tkatschenko, P. AubertAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium. This sodium fast neutron reactor called ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration) is a 600 MWe. It is a pool reactor type and integers cutting edge technologies. Developments are in progress especially for the vessel and the apparatus. Experiments are needed for both validation of numerical codes and specific studies. In this way, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache. Different Mock-ups can be connected to this loop to study the different issues at various reactor conditions. Currently, 4 Mock-ups have been identified: the internal vessel, the entire pool reactor, the link between the external and the internal vessel, a part of the internal vessel at a higher scale to study specific issues. The MICAS Mock-up is dedicated to study the flow regime of the internal vessel (hot plenum), both for code validation and also engineering design development. It has been designed at a reduced scale and integers as hydraulic obstacles all the apparatus immersed in the internal vessel. This Mock-up has been built in transparent polymer to carry out some optical measurements as laser velocimetry. Numerical studies with StarCCM+ has been engaged to determine the general flow pattern in a way to identify the area of interest for detailed phenomenological studies in order to define optimised instrumentation mapping. This article is dedicated to present PLATEAU facility and the experimental program on the MICAS Mock-up. In the first part, the ASTRID reactor concept is briefly presented. Then the PLATEAU experimental facility is descripted in detail. The issues of the internal vessel are summed-up and the MICAS Mock-up is presented. Then some numerical calculation results are showed to illustrate the flow in the internal vessel.
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Plateau facility in support to ASTRID and the sfr program: an overview of the first Mock-up of the ASTRID upper plenum, MICAS
2015Co-Authors: D. Guenadou, I. Tkatschenko, P. AubertAbstract:The CEA and several industrial partners are involved in the development of a 4th generation reactor cooled by sodium, ASTRID (Advanced Sodium Technological Reactor for Industrial Demonstration). It is a 600MWe pool type reactor integrating cutting edge technologies.Developments are in progress especially for the vessel and the apparatus. Experiments are needed for both validation of numerical codes and specific studies. In this way, a thermal-hydraulic loop, the PLATEAU facility, has been developed and built at the CEA Cadarache. Different Mock-ups can be connected to this loop to study the different issues at various reactor conditions. Currently, 4 Mock-ups are identified the internal vessel, the entire pool reactor, the link between the external and the internal vessel, a part of the internal vessel at a higher scale to study specific issues.The MICAS Mock-up at 1/6 scale is dedicated to study the flow regime of the internal vessel (hot plenum), both for code validation and also engineering design development.This Mock-up has been built in transparent polymer to carry out some optical measurements as laser velocimetry. Numerical studies have been engaged to determine the general flow pattern in a way to identify the area of interest for detailed phenomenological studies.
