Sharif Digital Repository

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... 

Acoustic science and it’s applications in thermodynamic, cause the new achievements in different field of scientific and industrial. Thermoacoustic is a new technique of acoustic that analyzes the thermodynamic fluctuations related to time and displacement. In other word, thermoacoustic is a field of transformation between acoustic energy and thermal energy. Thermoacoustic devices Include refrigeration equipment, motors, pumps, heat or a combination of these devices that are used to transfer and convert acoustic energy to thermal energy. The thermoacoustic systems that their functions are based on the interaction between acoustic wave and gas particle that does exist it’s around are new...