Analysis on Dynamic Characteristics of Rotating Flow Tubes With Multi-Channel and Different Flow Directions

ZHANG Bo; WANG Yichen; CAI Chengyu; DING Hu; CHEN Liqun

doi:10.21656/1000-0887.440359

Volume 46 Issue 4

Apr. 2025

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Article Navigation > Applied Mathematics and Mechanics > 2025 > 46(4): 438-450

ZHANG Bo, WANG Yichen, CAI Chengyu, DING Hu, CHEN Liqun. Analysis on Dynamic Characteristics of Rotating Flow Tubes With Multi-Channel and Different Flow Directions[J]. Applied Mathematics and Mechanics, 2025, 46(4): 438-450. doi: 10.21656/1000-0887.440359

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Analysis on Dynamic Characteristics of Rotating Flow Tubes With Multi-Channel and Different Flow Directions

doi: 10.21656/1000-0887.440359

1. School of Sciences, Chang’an University, Xi’an 710064, P.R.China;
2. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P.R. China

Funds:

The National Science Foundation of China(11702033；11872159)

Received Date: 2023-12-19
Rev Recd Date: 2024-05-11

Available Online: 2025-04-30

Abstract

Abstract

Turbine blades were the key components for gas turbine power output. To work normally in high temperature environment, cooling tube channels need be set inside the blades. The blade has complex dynamic behaviors under the joint action of internal fluid and its own rotation. The blade was simplified into a rotating pipe conveying fluid tube with multi-channel and different flow directions. The kinetic equation was derived with the energy method and the complex modal analysis was carried out. The effects of the flow direction, the velocity and the rotating speed on the stability and modal transition phenomena of the system were revealed with numerical examples.
- rotating flow tube,
- assumed mode method,
- critical velocity of instability,
- mode transition,
- stability

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References(33)

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