Numerical Study of Streaming in Thermal Buffer Tube

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Bahrami, Mohsen | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47824 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Ghorbanian, Kaveh
Abstract:
Streaming has some applications in medical and industrial science. This phenomena can increase or decrease efficiency of an acoustic system. Deliberate streaming used to eliminate heat exchanger is an example of desired applications. In the most cases, secondary flow is an undesired issue. Streaming in thermal buffer tube (TBT) of thermoacoustic stirling heat engine (TASHE) has some unwanted effects. The main goal of author is to simulate numerically periodic field in TBT with axisymmetric geometry and study the effects of variating geometry and turbulence on the intensity of streaming. According to inaccessible boundary conditions in TBT of TASHE, firstly, the field is numerically solved using DeltaEc software in one dimensional, and secondly, its solution would substitute in two dimensional problem to solve via Fluent software and finally capture the streaming. The results show that the turbulence and contouring the tube wall will decrease secondary flow effects quantitavely
Keywords:
Numerical Solution ; Thermal Buffer Tube ; Thermoacoustic Engine ; Secondary Flow ; Streaming Algorithm ; Thermoacoustic Engine

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