Uncoupling Coriolis Force and Rotating Booyancy Effects on Full-Field Heat Transfer Properties of a Rotating Channel (회전 채널의 전체 자기장 열 전달 특성에 대한 분리 코리올리 힘과 회전 부력 효과)

Overview

This article presents an experimental method for decoupling the interdependent Coriolis-force and rotating-buoyancy effects on heat transfer distributions in a rotating channel. The method aims to provide insights into the internal cooling of cast turbine rotor blades.

Key Study Components

Area of Science

• Heat transfer
• Fluid dynamics
• Thermal engineering

Background

• Understanding heat transfer is crucial for improving turbine efficiency.
• Coriolis force and rotating buoyancy significantly impact heat transfer properties.
• Existing methods may not fully capture these interdependent effects.
• This study aims to address these gaps through a novel experimental approach.

Purpose of Study

• To develop a method for isolating the effects of Coriolis force and rotating buoyancy.
• To collect full-field heat transfer data.
• To enhance understanding of local heat transfer properties in rotating systems.

Methods Used

• Utilization of a rotating rig driven by a motor.
• Collection of full-field heat transfer data.
• Implementation of a proposed data reduction method.
• Demonstration of the procedure by graduate students from the laboratory.

Main Results

• Successful decoupling of Coriolis and buoyancy effects on heat transfer.
• Revealed individual contributions to local heat transfer properties.
• Provided a comprehensive dataset for further analysis.
• Demonstrated the effectiveness of the proposed method.

Conclusions

• The method offers a new approach to studying heat transfer in rotating systems.
• It can significantly contribute to the design of more efficient turbine blades.
• Future research can build on this technique to explore additional applications.

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