• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Optimization of grooved klystron collector design for efficient heat transfer
【24h】

Optimization of grooved klystron collector design for efficient heat transfer

机译：优化带槽速调管收集器设计以实现高效传热

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

Klystron microwave amplifiers play a vital role in addressing the increasing demands of high-average microwave power for strategic applications such as linear accelerators, active denial technologies, radar, and so forth. Typically, klystrons have an efficiency of 50%-60% that demands an efficient thermal design for dissipating the unused DC power in the form of spent electron beam in collector. Hence, thermal modeling of the collector for efficient heat dissipation is highly critical in design of high average power klystrons. Of several types of design, grooved collector design is widely employed so as to increase the surface area between the collector and coolant and thereby enhance heat transfer. In this article, a mathematical model and design strategy have been demonstrated to obtain the optimum dimensions, that is, height, depth, and width of fins based on film coefficient and Reynolds number. For validation, the dimensions are then simulated in a computational fluid dynamics software (ANSYS-Fluent) demonstrating excellent agreement with the mathematical modeling. In addition, the optimum choice of grooving method (longitudinal or crossed) for the given power level has also been provided. The demonstrated strategy can also potentially be employed to other devices, which uses groove based design with water as coolant medium such as gyrotrons, plasma devices, and so forth.
机译：速调管微波放大器在满足战略应用（例如线性加速器，有源拒绝技术，雷达等）对高平均微波功率的日益增长的需求中起着至关重要的作用。通常，速调管的效率为50％-60％，这要求进行有效的散热设计，以便以废电子束的形式耗散未使用的DC功率到收集器中。因此，在设计高平均功率速调管时，为了有效散热而对集热器进行热建模至关重要。在几种类型的设计中，沟槽式收集器设计被广泛采用，以增加收集器与冷却剂之间的表面积，从而增强热传递。在本文中，已经证明了一种数学模型和设计策略，可以根据薄膜系数和雷诺数获得最佳尺寸，即鳍的高度，深度和宽度。为了进行验证，然后在计算流体动力学软件（ANSYS-Fluent）中对尺寸进行仿真，证明其与数学模型非常吻合。此外，还提供了针对给定功率水平的开槽方法（纵向或交叉）的最佳选择。所展示的策略也可以潜在地应用于其他设备，这些设备使用基于凹槽的设计，其中水作为冷却剂介质，例如回旋管，等离子设备等。

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