DPIV와 엔트로피 해석법을 이용한 스월 인젝터의 분무 특성에 관한 실험적 연구
- Title
- DPIV와 엔트로피 해석법을 이용한 스월 인젝터의 분무 특성에 관한 실험적 연구
- Other Titles
- An Experimental Study on the Spray Characteristics of Swirl Injector Using the Entropy Analysis and DPIV Technique
- Author
- 이기형
- Keywords
- GDI engine(Gasoline direct injection 직접분사식 엔진); DPIV(Digital Particle Image Velocimetry 입자 영상 속도계); Vorticity; 와류강도; Frame-Straddling; 이중화상 이중노출
- Issue Date
- 2003-09
- Publisher
- 한국분무공학회
- Citation
- 한국액체미립화학회 학술발표논문집, v. 2003, no. 0, page. 79-87
- Abstract
- Using these method, it was found that the concentration of spray droplets caused by the increase of injection of injection duration is more effective than the increase of momentum dissipation
The objective of this study is to analyse the spray characteristics according to the injection duration under ambient pressure condition and to investigate the relationship between vorticity and entropy for controlling diffusion process that is the most important thing during the intake stro,e injection process. Therefore, we obtained the spray velocity using the PIV method that has been an useful optical diagnostics technology, and vorticity calculated from spray velocity component with vorticity algorithm. In addition, we quantified the homogeneous diffusion rate of spray using the entropy analysis based on the Boltzmann's statistical thermodynamics. From these method, we found that as injection duration increases, spray velocity increases and the location of vortex is moved to the downstream of spray. In the same condition, as the entropy decrease, mean vorticity increases. This means that the concentration of spray droplets caused by the increase of injection duration is more effective than the increase of momentum dissipation.
- URI
- http://kiss.kstudy.com/thesis/thesis-view.asp?key=2957859https://repository.hanyang.ac.kr/handle/20.500.11754/156195
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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