http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
CFD analysis on the After-Cooler of a Turbo-Compressor
Vincent Lijo,Dong Sun Kim(김동선),Han Woog Bae(배한욱),Young Hee Lee(이영희),Heuy Dong Kim(김희동) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
The thermal performance of the after-cooler plays an important role in the performance of the turbo-compressor and all other associated systems. For a number of years, the turbo-compressor has suffered from little or no improvements in after-cooler performance. CFD code has been used to study and optimize the design of an after-cooler comprising of an inlet diffuser with guide vanes and an impinging plate. Several different designs such as size and shape of the diffuser, number of guide vanes inside the diffuser and position of an impinging plate near the inlet, are numerically studied to achieve uniform distribution of gas phase flow in the heat exchanger. The uniformity of flow distribution is increased with optimal design of diffuser and guide vanes. The results are analyzed in terms of pressure drop and heat transfer rate.
PIV를 이용한 스파이럴 노즐에서의 아음속 기체유동 계측
Abhilash Suryan,Vincent Lijo,김희동(Heuy-Dong Kim),김동선(Dong-Sun Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Swirling flow, in general, needs a compulsive force to get the tangential momentum in the nozzle. But the Spiral Nozzles do not require any extra device to generate this swirl. The special geometry of the nozzle facilitates a self generating mechanism for the spiral flow in the spiral nozzles. In the present investigation velocity measurements are carried out on the subsonic gas flow through Spiral Nozzles with different geometries for the annular slit using Particle Image Velocimetry technique. Velocity measurements were carried out at two sections in the spiral flow field and the flow characteristics were compared for the different nozzle configurations.