...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advances in space research >Experimental investigation of transient thermal behavior of an airship under different solar radiation and airflow conditions
【24h】

Experimental investigation of transient thermal behavior of an airship under different solar radiation and airflow conditions

机译：不同太阳辐射和气流条件下飞艇瞬态热行为的实验研究

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

Knowledge of the thermal behavior of airships is crucial to the development of airship technology. An experiment apparatus is constructed to investigate the thermal response characteristics of airships, and the transient temperature distributions of both hull and inner gas are obtained under the irradiation of a solar simulator and various airflow conditions. In the course of the research, the transient temperature change of the experimental airship is measured for four airflow speeds of 0 m/s (natural convection), 3.26 m/s, 5.5 m/s and 7.0 m/s, and two incident solar radiation values of 842.4 W/m~2 and 972.0 W/m~2. The results show that solar irradiation has significant influence on the airship hull and inner gas temperatures even if the airship stays in a ground airflow environment where the heat transfer is dominated by radiation and convection. The airflow around the airship is conducive to reduce the hull temperature and temperature nonuniformity. Transient thermal response of airships rapidly varies with time under solar radiation conditions and the hull temperature remains approximately constant in ～5-10min. Finally, a transient thermal model of airship is developed and the model is validated through comparison with the experimental data.
机译：了解飞艇的热行为对飞艇技术的发展至关重要。构造了一个实验装置来研究飞艇的热响应特性，并在太阳模拟器的照射和各种气流条件下获得船体和内部气体的瞬态温度分布。在研究过程中，测量了四个速度分别为0 m / s（自然对流），3.26 m / s，5.5 m / s和7.0 m / s的气流速度以及两个入射太阳光的实验飞艇的瞬态温度变化。辐射值分别为842.4 W / m〜2和972.0 W / m〜2。结果表明，即使飞艇停留在地面空气流动的环境中，太阳辐射对飞艇的船体和内部气体温度也有显着影响，在这种情况下，传热主要由辐射和对流组成。飞艇周围的气流有利于降低船体温度和温度不均匀性。在太阳辐射条件下，飞艇的瞬态热响应随时间快速变化，船体温度在约5-10分钟内保持大致恒定。最后，建立了飞艇的瞬态热模型，并通过与实验数据的比较验证了模型的有效性。

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