Study Of Flow Inside Thermoacoustic System

Lee, Wee Teck (2019) Study Of Flow Inside Thermoacoustic System. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The study of flow in thermoacoustic system is important in order to find out ways to increase the efficiency of thermoacoustic engine. However, the study of thermoacoustic principle is difficult to be understood without the working experimental apparatus and simulation model. The objectives of this project is to design a small scale thermoacoustic prototype for experimentation, to test the small scale thermoacoustic system using suitable measurement methods, and to model a simple thermoacoustic flow field by using computational fluid dynamics (CFD) software. In experimentation, a small thermoacoustic refrigerator (TAR) rig that is operating under 133.45 Hz is built with two different type of stacks; acrylonitrile butadiene styrene (ABS) and stainless-steel scrubber. In CFD simulation, a simple CFD model is designed based on the actual operating parameters of the experiment rig with ABS stack only. Experimental result shows that a temperature drops of approximately 1 oC is achieved for both type of stacks and the same result is also obtained from the CFD simulation with ABS as the stack. The results are discussed and the recommendations for further research on the study of flow inside thermacoustic system are suggested at the end of the report

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