| 제목 |
배기계 내구시험 중의 온도 변화 예측을 위한 연구 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
이원근(현대자동차) |
| Key Words |
Exhaust manifold(배기다기관), Thermal fatigue test(열피로시험), Conjugate heat transfer(복합열전달), Transient thermal behavior(비정상열거동) |
| 초록 |
Exhaust manifolds suffer from serious temperature variation during the thermal fatigue test. The spatial distribution of temperature changes at each moment. Because transient flow can not be simulated during the long period of temperature change, the simulation can not be performed by conjugate heat transfer analysis. In this study, a new procedure for transient thermal analysis is established by decoupling fluid-solid analysis. The procedure consists of (I) transient CFD calculation (2 cycles), (2) mapping heat transfer coefficient to the inner surface of solid mesh as a boundary condition of heat conduction analysis and (3) transient heat conduction analysis in the long period (30 min). {{br}}The realistic temperature change can be predicted by this procedure. {{br}} |
| 원문(PDF) |
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