엔트로피 해석과 PIV를 이용한 HCCI 엔진용 스월 인젝터의 분무 특성 해석에 관한 연구
- Title
- 엔트로피 해석과 PIV를 이용한 HCCI 엔진용 스월 인젝터의 분무 특성 해석에 관한 연구
- Other Titles
- A Study on the Spray Characteristics of Swirl Injector for Use a HCCI Engine using Entropy Analysis and PIV Technique
- Author
- 이기형
- Keywords
- 예혼합 압축착화; 입자 영상 속도계; 와류강도; 이중화상 이중노출; HCCI; PIV; Vorticity; Frame-straddling
- Issue Date
- 2004-01
- Publisher
- 한국자동차공학회
- Citation
- 한국자동차공학회 논문집, v. 12, No. 1, Page. 39-47
- Abstract
- 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 stroke injection process. Therefore, the spray velocity was obtained by using the PIV method that has been an useful optical diagnostics technology, and vorticity calculated from spray velocity component with vorticity algorithm. In addition, the homogeneous diffusion rate of spray was quantified by 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://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE00525417&language=ko_KRhttps://repository.hanyang.ac.kr/handle/20.500.11754/132050
- ISSN
- 1225-6382
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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