Study on the Unsteady Heat Transfer of Engine Exhaust Manifold Based on the Analysis Method of Serial

Liu, Zhien; Wang, Xiaomin; Zhang, Yan; Li, Xueni; Xu, Ying-Ying

doi:10.4271/2014-01-1711

Cited by 2 publications

(2 citation statements)

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“…Some of them are based on simple thermal resistance models. Some others are focused on developing analysis methods for better heat transfer behavior prediction (Cartwright, Selamet, Wade, Miazgowicz, & Sloss, 2015) (Chen, Wang, Wu, & Xin, 2014) (Zhien, Wang, Yan, Li, & Xu, 2014). In recent years, with the increasing use of computational fluid dynamics modeling, many studies are focused on predicting the thermal behavior of the system.…”

Section: Introductionmentioning

confidence: 99%

“…The complexity of fatigue resistance in the exhaust manifold is very complicated since the relevant phenomena are transient. Hence, three-dimension and many aspects have to be taken into consideration (Zhien, Wang, Yan, Li, & Xu, 2014) (Hasse , Sohm, & Durst, 2010). Therefore, coming up with a robust and durable manifold design is a critical and challenging task.…”

Section: Introductionmentioning

confidence: 99%

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Integration of the Simulation and Test Methodologies to Design Novel Exhaust Manifold Rig

Savcı

Celikten

Eroglu

2021

Isı Bilimi Ve Tekniği Dergisi

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Computer Aided Engineering is an effective tool utilized to drive an exhaust manifold design by early assessment within the engine program development phase. However, in the end, for exhaust manifold design verification, various tests must be performed in engine dynamometer cells under severe operating conditions. The test running durations are up to 2500 hours for the heavy-duty (HD) exhaust manifold. Therefore, the validation tests are expensive and time-consuming. Alternative ways are sought to replace these expensive tests for cost reduction purposes and more efficient dynamometer cells. Thus, the custom test rig is designed and built. This system contains the burner system supplying hot gas at a similar temperature and mass flow ranges with the engine. The drawback of the burner system is, it runs in steady-state mode, so very challenging to replicate the engine's pulsating flow effect exactly. Therefore, with the coupling of Star-CCM+ and Modefrontier, the CAE study is carried out to assess the feasibility of obtaining similar manifold skin temperature distribution in the burner test cell with engine conditions. It is aimed to determine the correct valve opening positions regulating the mass flow rate through the runners. This innovative methodology reduces the trial-and-error count in the experiment phase.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%