Development of film heat transfer model based on multiphase flow numerical analysis
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20239257
- Paper/Info type
- Other International Conferences
- Pages
- 1-7(Total 7 p)
- Date of publication
- Aug 2023
- Publisher
- JSAE & SAE
- Language
- English
- Event
- 2023 P, E&L
Detailed Information
| Category(E) | IC4 Modeling, MBD, Engine Systems and Control |
|---|---|
| Author(E) | 1) Takeshi Nagasawa, 2) Kenji Uchida, 3) Hiroyuki Yamashita |
| Affiliation(E) | 1) Mazda Motor Corporation, 2) Mazda Motor Corporation, 3) Mazda Motor Corporation |
| Abstract(E) | Automobiles will have to be applied strict regulations such as Euro7 against PM, HC, CO. PM is generated from fuel adhering to the wall surface of the combustion chamber. On the other hand, HC and CO are often generated when the fuel near the wall surface of the combustion chamber is insufficiently oxidized due to low temperature. Therefore, the fuel injection model of engine combustion CFD requires accurate prediction about the deposition and vaporization behavior of fuel on the wall surface of the combustion chamber. In this study, we first conducted multiphase flow numerical analysis that simulates fuel behavior on the wall surface of the combustion chamber. Then, we derived following two model formulas based on the result of multiphase flow numerical analysis. 1. A model formula for the contact area of liquid film that models the viscous stress inside the liquid film. 2. A model formula for the heat flux of a liquid film that models the heat transfer between the liquid film and the wall as heat conduction. Finally, we developed the film heat transfer model from these model formulas. In addition, we confirmed that our model formula could predict the liquid film temperature obtained by multiphase flow numerical analysis with high accuracy. |
