【标题】Numerical calculation of the influence of typical particle properties on pump as turbine
【参考中译】典型颗粒性质对涡轮泵影响的数值计算
【类型】 期刊
【关键词】 Pump as turbine;;Solid-liquid two-phase flow;;Particle property;;External characteristic;;Pressure pulsation
【参考中译】 泵作涡轮机;;固液两相流;;颗粒性质;;外部特性;压力脉动
【作者】 Zhao, Yanjuan; Tong, Jiangbo; Zhang, Yuliang; Cheng, Liang; Guo, Xiaomei; Han, AndaZhao, Yanjuan; Tong, Jiangbo; Zhang, Yuliang; Cheng, Liang; Guo, Xiaomei; Han, Anda
【摘要】 Pump reversal as a turbine has become an effective way to recover surplus liquid energy at present. In this paper, to study the influence of solid particles in the incoming medium on pump as turbine, based on mixture model, the full three-dimensional internal flow of a single stage and suction centrifugal pump reversed as turbine was numerically calculated, and the effects of three typical particle properties (density, concentration, and diameter) on the key performance parameters, including hydraulic turbine head, energy recovery efficiency, and radial force, were obtained under the rated working condition. The results show that the axial force on the pump as turbine impeller under solid-liquid two-phase flow increases and the radial force decreases compared to the single-phase clear-water flow. Each external characteristic parameter shows a different trend with each particle property changes. The axial force increases with the density, concentration, and diameter of particles. Under low particle density, low concentration, and small particle size, the radial force acting on impeller is smaller.
【参考中译】 目前，泵反向作为涡轮机已成为回收剩余液体能的有效方式。本文为研究来液中固体颗粒对涡轮泵的影响，基于混合物模型，对单级吸入式泵反向涡轮的全三维内部流动进行了数值计算，并研究了三种典型颗粒性质的影响（密度、浓度和直径）对关键性能参数，包括水力涡轮机头、能量回收效率和辐射力，是在指定工作条件下获得的。研究结果表明，与单相清水流相比，固液两相流下涡轮泵的轴向力增大，而轴向力减小。各个外部特征参数随着各个颗粒性质的变化而呈现不同的趋势。轴向力随着颗粒的密度、浓度和直径的增加而增加。在低颗粒密度、低浓度、小颗粒尺寸的情况下，作用在叶片上的轴向力较小。
【来源】 Journal of the Brazilian Society of Mechanical Sciences and Engineering 2025, vol.47, no.5
【入库时间】 2025/9/1
【标题】Numerical simulation of liquid-solid two-phase flow and erosion of Y-type slurry valve with different openings
【参考中译】不同开度Y型泥浆阀液固相间流动及冲刷的数值模拟
【关键词】 Y-type slurry valve;;liquid-solid two-phase flow;;particles;;valve erosion;;CFD-DEM
【参考中译】 Y型泥浆阀;;液固两相流;;颗粒;;阀门侵蚀;; CFD-TEM
【作者】 Zhang, Guang; Xin, Jialin; Chen, Desheng; Lin, ZheZhang, Guang; Xin, Jialin; Chen, Desheng; Lin, Zhe
【摘要】 Most conveyed industrial slurries contain hard particles, and the Y-type slurry valve is eroded after the long-term operation, causing economic losses. In this study, the liquid-solid two-phase flow and erosion characteristics of the Y-type slurry valve were studied. The distribution positions of particles with different sizes were determined, and large particles showed a deposition phenomenon. The particle distributions were more dispersed. At smaller valve opening degrees and the average velocity of solid particles decreased with the increase in valve opening degree. The main erosion area of the valve was concentrated on the ring area around the valve body connecting the downstream pipeline, and the valve disc. The relationship between the particle size and the erosion rate was analyzed, and the distribution of the main erosion area was obtained.
【参考中译】 大多数输送的工业浆液含有硬颗粒，Y型浆液阀在长期运行后被腐蚀，造成经济损失。本文对Y型渣浆阀的液固两相流动和磨损特性进行了研究。确定了不同粒径颗粒的分布位置，大颗粒表现出沉积现象。颗粒分布更加分散。当阀门开度较小时，固体颗粒的平均速度随着阀门开度的增加而降低。阀门的主要侵蚀区域集中在连接下游管道的阀门周围的环形区域和阀盘。分析了颗粒尺寸与侵蚀率的关系，得出了主要侵蚀面积的分布。
【来源】 Proceedings of the Institution of Mechanical Engineers 2025, vol.239, no.2
【标题】Whistle Blower: An insurance awareness mobile application with insurance policy selection, fraud detection, critical help, complaint features
【参考中译】告密者：一个具有保险单选择、欺诈检测、关键帮助、投诉功能的保险感知移动应用程序
【类型】 会议
【关键词】 Insurance assistance; Policy searches; Smart-phone apps; Fraud detection; Complaint submission; And tips
【参考中译】 保险援助； 策略搜索； 智能手机应用程序； 欺诈检测； 投诉提交； 和提示
【作者】 Mahfuzulhoq Chowdhury; Kazi Md. Tawsif Rahman; Hossain Ahmad Maruf
【摘要】 Insurance is a contract between a client and an insurance company in which the insurer provides the policyholder with financial protection to reduce risk. The existing insurance assistance literature did not present any ICT-based digital system for searching for a suitable insurance policy and company while taking rating, company type, financial condition, premium, insurance growth rate, and policy type into consideration. Existing literary works lack an automated insurance assistance system with features such as insurance lawyer search, insurance claim failure prediction, insurance tips, insurance company quality detection, time critical help posting, insurance complaint submission, and general insurance information accessibility. To resolve these issues, this paper yields an insurance awareness assistance mobile application that includes insurance claim fraud prediction, appropriate insurance policy and company search, contact with insurance companies, complaint submission, expert suggestion, company quality detection, insurance lawyer search, time critical help post, app rating submission, and insurance tip access features. The app qualification test results revealed that at least 60% of clients dispatched the foremost quality remarks regarding the insurance app's feature suitability.
【参考中译】 保险是客户和保险公司之间的合同，保险公司为投保人提供财务保护以降低风险。 现有的保险援助文献没有提供任何基于ICT的数字系统来搜索合适的保险单和公司，同时考虑评级、公司类型、财务状况、保费、保险增长率和保险单类型。 现有的文学作品缺乏自动化的保险援助系统，该系统具有诸如保险律师搜索、保险索赔失败预测、保险提示、保险公司质量检测、时间关键的帮助发布、保险投诉提交和一般保险信息可访问性等功能。 为了解决这些问题，本文开发了一个保险认知帮助移动应用程序，其中包括保险索赔欺诈预测、适当的保险单和公司搜索、与保险公司联系、投诉提交、专家建议、公司质量检测、保险律师搜索、时间紧迫的帮助帖子、应用程序评级提交和保险提示访问功能。 应用资格测试结果显示，至少60%的客户对保险应用的功能适用性给出了最重要的质量评价。
【来源】 8th International Conference on Computational System and Information Technology for Sustainable Solutions (CSITSS 2024) 8th International Conference on Computational System and Information Technology for Sustainable Solutions (CSITSS 2024)
【入库时间】 2025/12/24
【标题】A novel low-power, high-speed carry look ahead adder utilizing 11-T hybrid full adder module based 4:2 compressor unit for low-power applications
【参考中译】一种新型低功耗、高速前置加法器，利用基于11-T混合全加器模块的4：2压缩器单元，用于低功耗应用
【关键词】 CAD simulation;;CLA;;CMOS;;Compressor;;Gate diffusion input (GDI);;Hybrid full adder (HFA)
【参考中译】 CAD模拟;;CLA;;互补金属氧化物;;压缩器;;门扩散输入（LDI）;;混合全加器（HFA）
【作者】 Halder, Nimai; Mukherjee, BiswarupHalder, Nimai; Mukherjee, Biswarup
【摘要】 In this study, a novel low-power, high-speed hybrid architecture for a 16-bit carry look-ahead adder (CLA) employing 4:2 compressors is proposed. To enhance compressor latency and power efficiency, a new hybrid full adder architecture based on eleven transistors is implemented. The conventional CMOS (CCMOS) architecture of CLAs is hindered by poor latency due to the significant parasitic capacitance presented by higher-order carry generation modules, unlike the ripple carry adder architecture. To mitigate latency issues in the CLA architecture, the design generates odd and even carry bits independently. The proposed 16-bit CLA architecture is simulated using a 45 nm PTM technology model with the Mentor Graphics Tanner EDA tool. Comprehensive simulation-based analyses and comparisons with state-of-the-art methodologies are conducted, focusing on power consumption, delay, and area (transistor count). The proposed design has a power-delay product of 108 femtojoules, which is 53% better than the CCMOS 16-bit CLA architecture.
【参考中译】 在这项研究中，提出了一种新颖的低功耗、高速混合架构，用于采用4：2压缩器的16位前置进制加法器（CLA）。为了提高压缩器延迟和电源效率，实施了基于十一个晶体管的新混合全加器架构。与波纹进制加法器架构不同，由于更高级的进制进制生成模块呈现的显着寄生电容，导致延迟延迟较低，因此CMA的传统互补性（CCMOS）架构受到阻碍。为了减轻CLA架构中的延迟问题，该设计独立生成奇数和偶数进制位。采用Mentor图形Tanner EDA工具，使用45纳米STM技术模型模拟了拟议的16位CLA架构。进行了全面的基于模拟的分析并与最先进的方法进行了比较，重点关注功耗、延迟和面积（晶体管计数）。提出的设计具有108毫微微焦的功率延迟积，比CCMOS 16位CLA架构好53%。
【来源】 Analog Integrated Circuits and Signal Processing 2025, vol.123, no.2
【标题】DARKSIDE T6 2.0TDI EGR & COOLER DELETE KIT
【参考中译】DARKSIDE T6 2.0LTD废气和冷却器套件
【作者】 anonymous
【摘要】 Darkside Developments are renown for their diesel tuning products. This blanking kit was designed to remove the EGR and EGR cooler system on Volkswagen Transporter 2.0 TDI engines. The kit itself is a neat bit of, er, kit and contains a large EGR blanking plate, two medium EGR blanking plates, a pair of medium EGR gaskets, one small EGR blanking plate, a small EGR gasket, one 90 degree silicone, a EGR cooler CNC machined fitting and a fitting kit.
【参考中译】 黑暗面发展是著名的柴油调整产品。此消隐套件的目的是删除EGR和EGR冷却器系统的大众运输车2.0 TDI发动机。该套件本身是一个整洁的位，呃，套件，并包含一个大EGR盲板，两个中等EGR盲板，一对中等EGR垫圈，一个小EGR盲板，一个小EGR垫圈，一个90度硅胶，EGR冷却器数控加工配件和配件套件。
【来源】 Performance VW 2025, no.Nov.
【标题】Novel dynamic modeling and analysis method of the wind turbine gearbox gear-bearing coupling system considering gear crack and tooth modification with support shaft flexibility
【参考中译】考虑齿轮裂纹和齿轮修形以及支撑轴柔性的风力涡轮机齿轮-轴承耦合系统动态建模和分析新方法
【关键词】 Wind turbines; Gearbox; Gear modification; Gear; Dynamic; Shaft flexibility
【参考中译】 风力涡轮机;齿轮箱;齿轮修改;齿轮;动态;轴灵活性
【作者】 Shuyi Yang; Caichao Zhu; Chengwu Li; Ye Zhou; Wenxuan Wang; Shengkai Wang
【摘要】 Wind turbine gearboxes are subjected to coupled excitations from gear cracks, gear modifications, and flexible shaft deformations. However, most existing studies examine the dynamic behavior under isolated excitation conditions. This study proposes a novel dynamic modeling approach for the wind turbine gear-bearing coupling system, combining isogeometric analysis (IGA) and lumped parameter methods. An improved slice method is developed to evaluate the time-varying meshing stiffness (TVMS), considering the gear crack and modifications. Then, the refined integration method is developed to solve the gear contact analysis integrating the system vibration responses. Subsequently, the dynamic model is validated through bench testing, and system dynamic characteristics are thoroughly investigated. The results indicate that gear cracks may shift contact load distribution away from the cracked region, increase bearing contact load amplitude, reduce the bearing's load area, and induce periodic impacts. Additionally, gear axial crown modification (ACM) is more sensitive to the contact load distribution of gear-bearing and alleviates the impact response of the coupled system. Furthermore, the flexibility of the supporting shaft (FS) may lead to tooth disengagement and exacerbate impact vibrations in the system.
【参考中译】 风力涡轮机齿轮箱受到齿轮裂纹、齿轮修改和柔性轴变形的耦合激励。然而，大多数现有的研究检查了隔离激励条件下的动态行为。本研究提出了一种新颖的风力涡轮机齿轮-轴承耦合系统动态建模方法，结合等距分析（IGA）和集中参数方法。考虑齿轮裂纹和修改，提出了一种改进的切片法来评估时变咬合硬度（TGMS）。然后，发展了精细积分法来解决综合系统振动响应的齿轮接触分析。随后，通过台架测试对动态模型进行了验证，并深入研究了系统动态特性。结果表明，齿轮裂纹可能会使接触载荷分布偏离裂纹区域，增加轴承接触载荷幅值，缩小轴承载荷面积，并引发周期性冲击。此外，齿轮轴向凸度修改（ACN）对齿轮轴承的接触载荷分布更加敏感，并加剧了耦合系统的冲击响应。此外，支撑轴（FS）的灵活性可能会导致牙齿脱离并加剧系统中的冲击振动。
【来源】 Mechanism and Machine Theory 2025, vol.212