Unsteady Aerodynamic Characteristics of Oscillating Three-dimensional Cascades

三维振荡叶栅的非定常气动特性

• 批准号: 62850015
• 负责人: TAKATA Hiroyuki
• 金额: $ 2.56万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62850015/
• 关键词: Oscillating Blades; Three-dimensional Cascade; Unsteady Aerodynamic Force; 翼列フラッタ

This study aims to prepare a numerical calculation code which enables us to estimate unsteady aerodynamic forces and moments on vibratind three-dimensional cascade blades, wherein a potential flow analysis around cascades with arbitrary geometry and a natural mode analysis of three-dimensional blades are combined.First, steady flow field was obtained for a given cascade, and secondly, unsteady small disturbance was superposed on it. Unsteady pressure distribution around the vibrating blades were calculated, thus unsteady forces and moments were obtained.The study were progressed in three steps;1. A preparatory examination of numerical methods for two-dimensional cascades in incompressible flow,2. Numerical analyses three-dimensional incompressible cascades,3. A preparation for an extention to cascades in compressible flow.

本文将任意叶栅的势流分析与三维叶片的固有模态分析相结合，编制了一套计算三维叶栅振动叶片非定常气动力的数值计算程序。在此基础上叠加非定常小扰动，计算了振动叶片周围的非定常压力分布，得到了非定常力和力矩。不可压缩流中二维叶栅数值方法的初步研究。数值分析了三维不可压缩流场，3.可压缩流叶栅扩展的准备。

项目成果

KOBAYASHI, Takao; TAKATA,Hiroyuki: "A Study on Unsteady Aerodynamic Characteristics of Oscillating Cascades with Arbitrary Blade Profiles (2nd Report, Three-dimensional Cascades in Incompressible Flow)" Transactions of Japan Society of Mechanical Engineer

小林高夫；

KOBAYASHI, Takao; TAKATA,Hiroyuki: "A Study on Unsteady Aerodynamic Characteristics of Oscillating Cascades with Arbitrary Blade Profiles (1st Report, Two-dimensional Cascades in Incompressible Flow)" Transactions of Japan Society of Mechanical Engineers.

小林高夫；

小林孝雄,高田浩之: 日本機械学会論文集. 55. 135-140 (1989)

Takao Kobayashi、Hiroyuki Takada：日本机械工程师学会会议记录 55. 135-140 (1989)。

小林孝雄,高田浩之: 日本機械学会論文集.

Takao Kobayashi、Hiroyuki Takada：日本机械工程师学会会议录。