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| 209 | Numerical Study on the Flow Characteristics in Coolant Passage of the Homogeneous Charge Compression Ignition Engine |
| | Min-Jung Kim(Institute for Advanced Engineering)Sang-Kyoo Lee・Dong-Ryul Rhim・Sang-Up Lee(Institute for Advanced Engineering)Jac-Woo chung・Woo Kang(Korea Automotive Technology Institute) |
| The characteristics of pressure drop and cooling performance of coolant passing through surroundings of each cylinder has been studied on a linear 4-cylinder 4-valve 2liter diesel engine using a commercial CFD code. The results on coolant flow rate per gasket hole show that the 48% of total coolant flow rate flows through exhaust port regions while the remaining 52% flows through intake port regions. (JSAE Paper Number: 20075093) |
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| 210 | Vehicle Thermal Management-New Modeling Approach for Integrating Partial Systems
Vehicle thermal management system |
| | Kamel G. Mahmoud(AVL List GmbH)Y. Moroguchi(Mitsubishi Fuso Truck & Bus Corporation)J. Krammer(AVL List GmbH) |
| The state-of-the-art in engine simulation is constantly advancing. Simulation technologies have traditionally been segregated into specialties that simulate one sub-system while greatly simplifying the interaction to other components. This is acceptable in traditional design methodologies but became inadequate in the context of "integrated system", currently emerging in industry. This paper presents a methodology that can be used in modeling the integrated vehicle thermal partial systems in order to understand and quantify the thermal behavior of these components; especially during the engine warm-up. The engine transient performance can be optimized with respect to the engine control parameters. (JSAE Paper Number: 20075367) |
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| 211 | Virtual Car and Motorcycle Aerodynamics |
| | Norbert Gruen(BMW Group)Rainer Demuth・Gerhard Hofer・Hans Kerschbaum(BMW Group) |
| This paper presents the status of CFD usage at the BMW Group during the aerodynamic development of passenger cars and motorcycles, in particular employing a commercial Lattice-Boltzmann tool (PowerFLOW). First an overview is given of the development process and the questions that can be tackled by simulation in the different phases. Then the simulation process is explained from geometry preparation to results analysis. Some selected validation cases demonstrate the accuracy that can be achieved at the moment. Finally a number of practical examples is used to show the capabilities for in detail analysis of the flow field. (JSAE Paper Number: 20075018) |
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| 212 | Investigations on the Realistic Modeling of the Flow around Wheels and Wheel Arches by CFD |
| | Florian Modlinger(BMW Group)Rainer Demuth(BMW Group)Nikolaus Adams(TU Muenchen) |
| CFD-Simulations concerning the flow around the wheels are often simplified in terms of wheel rotation, tread pattern and deformation. This paper presents investigations on different effects of the wheel modeling in CFD-Simulations with the commercial Lattice-Boltzmann Code PowerFLOW. In a first step all model simplifications, which can affect the flow topology around the wheels are shown. In a second step a certain model simplification is investigated in detail concerning its influence on the flow structures and the resulting aerodynamic forces. The investigations are presented for an isolated wheel, and for a wheel within the wheel arch of a passenger car. (JSAE Paper Number: 20075195) |
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