• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat retention analysis with thermal encapsulation of powertrain under natural soak environment
【24h】

Heat retention analysis with thermal encapsulation of powertrain under natural soak environment

机译：自然浸泡环境下动力总成的热封保温分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper investigates high fatality modelling of vehicle heat transfer process during natural soak environment and heat retention benefits with powertrain encapsulations. A coupled computer-aided-engineering (CAE) method utilising 3D computational-fluids-dynamics (CFD) and transient thermal modelling was applied to solve buoyancy-driven convection, thermal radiation and conduction heat transfer of vehicle structure and fluids within. Two vehicle models with different encapsulation layouts were studied. One has engine-mounted-encapsulation (EME) and the other has additional vehicle-mounted-encapsulation (VME). Coupled transient heat transfer simulations were carried out for the two vehicle models to simulate their cool-down behaviours of 9 h static soak. The key fluids temperatures' cool-down trajectories were obtained and correlated well with vehicle test data. Increased end temperatures were seen for both coolant and oils of the VME model. This provides potential benefits towards C02 emissions reduction and fuel savings. The air paths and thermal leakages with both encapsulations were visualised. Reduced leakage pathways were found in the VME design in comparison with the EME design. This demonstrated the capability of embedded CAE encapsulation heat retention modelling for evaluating encapsulation designs to reduce fuel consumption and emissions in a timely and robust manner, aiding the development of low-carbon transport technologies.
机译：本文研究自然浸泡环境下车辆传热过程的高死亡率模型，以及动力总成封装的保热优势。利用3D计算流体动力学（CFD）和瞬态热模型的耦合计算机辅助工程（CAE）方法解决了浮力驱动的对流，热辐射以及车辆结构和内部流体的传导热传递。研究了两种具有不同封装布局的车辆模型。一个具有引擎安装封装（EME），另一个具有其他车载封装（VME）。对这两种车辆模型进行了耦合的瞬态传热模拟，以模拟它们在9 h静态浸泡中的冷却行为。获得了关键流体温度的冷却轨迹，并将其与车辆测试数据很好地关联。 VME模型的冷却液和机油的最终温度均升高。这为减少二氧化碳排放量和节省燃料提供了潜在的好处。可视化了两个封装的空气路径和热泄漏。与EME设计相比，在VME设计中发现了减少的泄漏途径。这证明了嵌入式CAE封装保温模型能够评估封装设计，从而及时，稳健地减少燃料消耗和排放，从而有助于开发低碳运输技术。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号