In lost paper of magneto-hydrodynamic instability analysis of liquid metal free surface jet flow (Part Ⅰ), the magneto-hydrodynamic instability was analyzed for the jet flow in a transverse non-uniform magnetic field...In lost paper of magneto-hydrodynamic instability analysis of liquid metal free surface jet flow (Part Ⅰ), the magneto-hydrodynamic instability was analyzed for the jet flow in a transverse non-uniform magnetic field, BT. But, as all known, for the real conditions of liquid metal limiter-divertor plasma-facing components are in toroidal and poloidal fields. So, we try to analyze the magneto-hydrodynamic instability of the jet flow (hereby only for circular shape cross section jet flow) in the zone of non-uniform magnetic fields,展开更多
搭建了常压水超汽化实验回路（HVL-Ⅰ）,采用平面激光诱导荧光（PLIF）、高速摄影、微距摄影、粒子成像测速（PIV）等先进测量技术,开展聚变堆面对等离子体部件（第一壁、偏滤器）在高热流过冷沸腾工况下强化换热特性实验研究.选择三角...搭建了常压水超汽化实验回路（HVL-Ⅰ）,采用平面激光诱导荧光（PLIF）、高速摄影、微距摄影、粒子成像测速（PIV）等先进测量技术,开展聚变堆面对等离子体部件（第一壁、偏滤器）在高热流过冷沸腾工况下强化换热特性实验研究.选择三角形和矩形翅片的铬锆铜超汽化样件,实验工况为常压室温（296K）,若丹明 B 水溶液流速0.3~0.5m.s-1连续可调,热流密度~5MW.m-2.实验结果表明同等工况下,矩形翅片比三角形翅片换热效果显著增强,性能提升约30%~50%.微距摄影显示翅根涡流形态保持时间越短,越有利于小汽泡充分扩散,从而使换热得到强化.展开更多
Geometry sensitivity of magnetohydrodynamics （MHD） duct flow and some ab- normal phenomena deviating from the classical MHD laws were measured in an experimental investigation of the MHD effect of the flow channel i...Geometry sensitivity of magnetohydrodynamics （MHD） duct flow and some ab- normal phenomena deviating from the classical MHD laws were measured in an experimental investigation of the MHD effect of the flow channel inserter （FCI） duct flow. The results showed that the velocity distribution deviated from the M-type profile on the centre-plane of the cross section of the duct with small slots （in short ＂S-duct＂）. The electric potential difference in the duct wall was much lower than that given by the classical electromagnetic laws. The MHD pres- sure drop was much higher than that from the classical magneto-hydrodynamics theory. These results may help us find some new methods to reduce the MHD pressure drop, or explore other potential applications such as flow structure control.展开更多
The virtual prototyping models of the mechanical, hydraulic and control system of the ITER tractor were built with CATIA, ADAMS and MATLAB/Simulink respectively according to its heavy load and high precision character...The virtual prototyping models of the mechanical, hydraulic and control system of the ITER tractor were built with CATIA, ADAMS and MATLAB/Simulink respectively according to its heavy load and high precision characteristics, and the data transfer between the different models was accomplished by the integration interface between different software. Consequently the virtual experimental platform for the multi-disciplinary co-simulation was established. A co-simulation study of the mechanical-hydraulic-control coupling system of the ITER tractor was carried out. The synchronization servo control of parallel hydraulic cylinders was implemented, and the tracking control of the preconcerted trajectory of the hydraulic cylinders was realized on the established experimental platform. This paper presents the optimization design and technology rebuilding for the complicated coupling system with its theoretic foundation and co-simulation virtual experimental platform.展开更多
The HTS current leads of superconducting magnets for large scale fusion devices and high energy particle colliders can reduce the power consumption for cooling by 2/3 compared with conventional leads. The resistive se...The HTS current leads of superconducting magnets for large scale fusion devices and high energy particle colliders can reduce the power consumption for cooling by 2/3 compared with conventional leads. The resistive sections of high-rated current leads are usually made of a heat exchanger cooled by gas flow. The supply of the cooling mass flow incurs more than 90% of the cooling cost for the HTS leads. The mass flow rate requirement depends not only on the length and material of the resistive heat exchanger, but also on the heat transfer coefficient and HEX surface, the joint resistance at the cold end of a sheet-stack HEX with a larger specific presented in the paper. The test results of efficiency can be achieved. and its cooling approach. The design and operation surface and a much smaller hydraulic diameter are an HTS lead optimized for 8 kA show that a 98.4%展开更多
文摘In lost paper of magneto-hydrodynamic instability analysis of liquid metal free surface jet flow (Part Ⅰ), the magneto-hydrodynamic instability was analyzed for the jet flow in a transverse non-uniform magnetic field, BT. But, as all known, for the real conditions of liquid metal limiter-divertor plasma-facing components are in toroidal and poloidal fields. So, we try to analyze the magneto-hydrodynamic instability of the jet flow (hereby only for circular shape cross section jet flow) in the zone of non-uniform magnetic fields,
文摘搭建了常压水超汽化实验回路（HVL-Ⅰ）,采用平面激光诱导荧光（PLIF）、高速摄影、微距摄影、粒子成像测速（PIV）等先进测量技术,开展聚变堆面对等离子体部件（第一壁、偏滤器）在高热流过冷沸腾工况下强化换热特性实验研究.选择三角形和矩形翅片的铬锆铜超汽化样件,实验工况为常压室温（296K）,若丹明 B 水溶液流速0.3~0.5m.s-1连续可调,热流密度~5MW.m-2.实验结果表明同等工况下,矩形翅片比三角形翅片换热效果显著增强,性能提升约30%~50%.微距摄影显示翅根涡流形态保持时间越短,越有利于小汽泡充分扩散,从而使换热得到强化.
基金supported by National Natural Science Foundation of China (No.10775042)
文摘Geometry sensitivity of magnetohydrodynamics （MHD） duct flow and some ab- normal phenomena deviating from the classical MHD laws were measured in an experimental investigation of the MHD effect of the flow channel inserter （FCI） duct flow. The results showed that the velocity distribution deviated from the M-type profile on the centre-plane of the cross section of the duct with small slots （in short ＂S-duct＂）. The electric potential difference in the duct wall was much lower than that given by the classical electromagnetic laws. The MHD pres- sure drop was much higher than that from the classical magneto-hydrodynamics theory. These results may help us find some new methods to reduce the MHD pressure drop, or explore other potential applications such as flow structure control.
基金supported by design of the ITER transfer casks system (ITER International Team) ITA 23-01-CNthe Key Laboratory of Biomimetic Sensing and Advanced Robot Technology,Anhui Province,China
文摘The virtual prototyping models of the mechanical, hydraulic and control system of the ITER tractor were built with CATIA, ADAMS and MATLAB/Simulink respectively according to its heavy load and high precision characteristics, and the data transfer between the different models was accomplished by the integration interface between different software. Consequently the virtual experimental platform for the multi-disciplinary co-simulation was established. A co-simulation study of the mechanical-hydraulic-control coupling system of the ITER tractor was carried out. The synchronization servo control of parallel hydraulic cylinders was implemented, and the tracking control of the preconcerted trajectory of the hydraulic cylinders was realized on the established experimental platform. This paper presents the optimization design and technology rebuilding for the complicated coupling system with its theoretic foundation and co-simulation virtual experimental platform.
文摘The HTS current leads of superconducting magnets for large scale fusion devices and high energy particle colliders can reduce the power consumption for cooling by 2/3 compared with conventional leads. The resistive sections of high-rated current leads are usually made of a heat exchanger cooled by gas flow. The supply of the cooling mass flow incurs more than 90% of the cooling cost for the HTS leads. The mass flow rate requirement depends not only on the length and material of the resistive heat exchanger, but also on the heat transfer coefficient and HEX surface, the joint resistance at the cold end of a sheet-stack HEX with a larger specific presented in the paper. The test results of efficiency can be achieved. and its cooling approach. The design and operation surface and a much smaller hydraulic diameter are an HTS lead optimized for 8 kA show that a 98.4%
