Simulation of Instantaneous Heat Transfer in Spark Ignition Internal Combustion Engines: Unsteady Thermal Boundary Layer Modeling

David R. Buttsworth; Abdalla Agrira; Ray Malpress; Talal Yusaf

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Simulation of Instantaneous Heat Transfer in Spark Ignition Internal Combustion Engines: Unsteady Thermal Boundary Layer Modeling

机译：火花点火内燃发动机瞬时传热的仿真：非稳态热边界层建模

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Simulation of internal combustion engine heat transfer using low-dimensional thermody-namic modeling often relies on quasisteady heat transfer correlations. However, unsteady thermal boundary layer modeling could make a useful contribution because of the inherent unsteadiness of the internal combustion engine environment. Previous formulations of the unsteady energy equations for internal combustion engine thermal boundary layer modeling appear to imply that it is necessary to adopt the restrictive assumption that isentropic processes occur in the gas external to the thermal boundary layer. Such restrictions are not required and we have investigated if unsteady modeling can improve the simulation of crank-resolved heat transfer. A modest degree of success is reported for the present modeling, which relies on a constant effective turbulent thermal conductivity. Improvement in the unsteady thermal boundary layer simulations is expected in the future when the temporal and spatial variations in effective turbulent conductivity are correctly modeled.

机译：使用低维热力学模型对内燃机的传热进行模拟通常依赖于准稳态传热相关性。但是，由于内燃机环境固有的不稳定性，非稳态热边界层建模可能会做出有益的贡献。用于内燃机热边界层建模的非定常能量方程式的先前公式似乎暗示，必须采用等熵过程发生在热边界层外部的气体中的限制性假设。不需要这样的限制，我们已经研究了非稳态建模是否可以改善曲柄分辨传热的模拟。据报道，本模型的成功程度不高，这取决于恒定的有效湍流热导率。当正确地模拟有效湍流传导率的时间和空间变化时，可以预期改进非稳态热边界层模拟。

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《Journal of Engineering for Gas Turbines and Power》 |2011年第2期|p.022802.1-022802.5|共5页
作者
David R. Buttsworth; Abdalla Agrira; Ray Malpress; Talal Yusaf;
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Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;

Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;

Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;

Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350, Australia;

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A: sectional area of the boundary layer perpendicular to radial direction; rnB: engine bore; rnQ: rate of heat generation per unit volume; rnR: gas constant; rnRe: reynolds number based on mean piston speed and engine bore; rnet al;

机译：A：边界层的垂直于径向的截面积;rnB：发动机缸径;rnQ：单位体积的发热量;rnR：气体常数;rnRe：基于平均活塞速度和发动机缸孔的雷诺数;网络;

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1. Instantaneous Heat Flux Simulation of a Motored Reciprocating Engine: Unsteady Thermal Boundary Layer With Variable Turbulent Thermal Conductivity [J] . Abdalla Agrira, David R. Buttsworth, Mior A. Said Journal of Heat Transfer . 2014,第3期

机译：电动往复式发动机的瞬时热通量模拟：具有可变湍流热导率的非稳定热边界层
2. A new closed-form thermodynamic model for thermal simulation of spark ignition internal combustion engines [J] . Barjaneh Afshin, Sayyaadi Hoseyn Energy Conversion & Management . 2015,第NOVa期

机译：用于火花点火内燃机热仿真的新型封闭形式热力学模型
3. Experimental investigation of combustion and heat transfer in a direct-injection spark ignition engine via instantaneous combustion chamber surface temperature measurements [J] . K-W Cho D Assanis Z Filipi G Szekely P Najt R Rask Proceedings of the Institution of Mechanical Engineers . 2008,第D11期

机译：通过瞬时燃烧室表面温度测量对直喷式火花点火发动机燃烧和传热的实验研究
4. SIMULATION OF INSTANTANEOUS HEAT TRANSFER IN SPARK IGNITION INTERNAL COMBUSTION ENGINES - UNSTEADY THERMAL BOUNDARY LAYER MODELLING [C] . David R. Buttsworth, Abdalla Agrira, Ray Malpress, Proceedings of the ASME Internal Combustion Engine Division fall technical conference 2009 . 2009

机译：火花点火内燃发动机瞬时传热的模拟-非稳态热边界层建模。
5. Characterization of combustion and heat transfer in a direct injection spark ignition engine through measurements of instantaneous combustion chamber surface temperature. [D] . Cho, Kuk-Won. 2003

机译：通过测量瞬时燃烧室表面温度来表征直喷式火花点火发动机中的燃烧和热传递。
6. Unsteady Boundary Layer Flow and Heat Transfer of a Casson Fluid past an Oscillating Vertical Plate with Newtonian Heating [O] . Abid Hussanan, Mohd Zuki Salleh, Razman Mat Tahar, 2010

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7. Periodic Heat Transfer in Internal Combustion Engines : Part 2, On the Coefficient of Heat Transfer between Gases and Cylinder Walls of the Spark-Ignition Engine [O] . Tatsu OGURI 1959

机译：内燃机中的周期性传热：第2部分，在火花点火发动机气体和气缸壁之间的传热系数上
8. Economic Impact and Small Business Analysis for the Standards of Performance for Stationary Spark Ignition Internal Combustion Engines and NESHAP for Reciprocating Internal Combustion Engines [R] . Depro, B. 2006

机译：固定式火花点火式内燃机性能标准的经济影响和小型业务分析以及往复式内燃机的NEsHap

Simulation of Instantaneous Heat Transfer in Spark Ignition Internal Combustion Engines: Unsteady Thermal Boundary Layer Modeling

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