严军,何仁.液力缓速器叶片变角度的缓速性能分[J].农业机械学报,2009,40(4):206-209.
.Analysis for Hydrodynamic Retarder with Different Vanes[J].Transactions of the Chinese Society for Agricultural Machinery,2009,40(4):206-209.
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液力缓速器叶片变角度的缓速性能分   [下载全文]
Analysis for Hydrodynamic Retarder with Different Vanes   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  液力缓速器  前倾角  湍流模型  数值模拟
基金项目:
严军  何仁
江苏大学
中文摘要:采用雷诺时均N-S方程、标准k-ε模型和SIMPLEC算法对液力缓速器内部流场进行了数值模拟,分析倾角为50°、55°、60°时液体流动的速度分布、压力分布和湍动能分布规律。以Rothalpy值的变化作为损失分析指标,定量比较不同倾角对制动力矩的影响,得出叶片倾角为55°时缓速能力最大,其原因是沿程摩擦阻力损失与冲击损失的叠加使得液力损失最大。
Key Words:
Abstract:Hydrodynamic retarder under different vane degree condition was simulated. By using the time averaged N-S equation and the standard k-εturbulence and the SIMPLEC algorithm simultaneously, the internal characteristics of flow field were simulated. The calculated velocity, pressure and turbulent kinetic energy distribution of the turbulent flow in hydrodynamic retarder were given. The method of loss analysis was proposed which changed value of Rothalpy was used to compare the retarder ability. The result shows that the model under 55° vane degree has the biggest impact because the loss of friction and impact made hydrodynamic loss most.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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