共查询到18条相似文献,搜索用时 750 毫秒
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计算流体力学在车辆冷却风道设计中的应用 总被引:3,自引:1,他引:2
建立了装甲车辆冷却风道空气湍流流动与传热的计算流体力学( CFD)计算模型,提出了确定动力舱外计算区域和网格生成步骤及保证网格质量的实用方法,应用商业软件Fluent进行3维数值求解。检验了CFD计算结果精度。将CFD计算模型应用于车辆冷却风道设计中,对风扇导流板空气阻力进行了计算,取得了较好的效果。 相似文献
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通过分析影响发动机本体及辅助系统性能的各状态参数,建立了完整的、能全面反映发动机状态的评价参数,结合层次分析法及模糊综合评判法,实现了对装甲车辆发动机状态的科学评估,并以某型发动机试验数据为例进行了计算分析.结果表明,该方法能对装甲车辆发动机状态实施有效评估. 相似文献
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本文将三元流动的基本理论用于装甲车辆风机。全面介绍了叶轮的设计和计算方法。分析了叶轮中的流场,提出了改善流场和提高效率的措施. 相似文献
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面向坦克装甲车辆创新与快速设计的知识建模方法研究 总被引:1,自引:1,他引:0
针对目前坦克装甲车辆总体设计中存在的问题,提出了面向坦克装甲车辆创新与快速设计的知识建模方法.在该方法中,首先规划了基于知识的坦克装甲车辆设计流程,然后根据设计流程将坦克装甲车辆设计知识划分为创新设计知识、选型/可重用设计知识、典型问题及其优化求解过程知识.利用本体、基于实例推理、功构映射和模板方法对3种设计知识进行组织建模.基于该建模方法开发了坦克装甲车辆创新与快速设计平台软件,并规划了其与企业已有信息平台之间的业务流程及集成模式.最后,采用该软件对某车辆进行了设计. 相似文献
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通过对履带装甲车辆混合驱动系统分析,建立了混合驱动系统优化设计的数学模型,并以某战车底盘为例进行求解.计算结果与原设计方案比较证明:优化设计后整车的能量结构更加合理,减小了车重. 相似文献
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A computational fluid dynamics (CFD) calculation model for the airflow and heat transfer in an armored vehicle cooling wind tunnel is established. A practical method to determine computation region outside power train compartment, produce grid and ensure grid quality is put forward. A commercial software FLUENT can be used to obtain solutions numerically in 3-D space. Precision of CFD calculation results is verified. The CFD model is used in designing a vehicle cooling wind tunnel, and air flow resistance of fan blast baffle is calculated. The calculated results show feasibility of the CFD rnodel and the method. 相似文献
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电传动装甲车动カ舱内空气波场数值模拟及结构改进分析 总被引:1,自引:0,他引:1
将装甲车由机械传动改为电传动后,电机类设备的增加对动力舱内的冷却系统提出新的要求,利用计算流体动力学(CFD)技术对虚拟动力舱内空气流场进行数值模拟,可以对动力舱冷却系统的合理性进行预测分析并提出建议。以某虚拟电传动装甲车动力舱为研究对象,建立了电传动装甲车动力舱内空气流动与传热计算的物理模型和数学模型,采用标准尾K-ε方程湍流模型对舱内的流动进行了描述,对不同风扇流量下动力舱内空气流场进行了三维数值模拟与分析,为风扇流量的确定提供了理论依据;对动力舱排气窗位置进行了分析讨论,指出排气窗位置的不同会对舱内部件带来不同的冷却效果。 相似文献
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居乃鵕 《兵工学报(英文版)》2006,2(1):14-21
For completing the hydrodynamics software development and the engineering application research on the amphibious vehicle systems, hydrodynamic modeling theory of the amphibious vehicle systems is elaborated, which includes to build up the dynamic system model of amphibious vehicle motion on water, gun tracking-aiming-firing, bullet hit and armored check-target, gunner operating control, and the simulation computed model of time domain for random sea wave. 相似文献
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When the mechanical drive is changed into the electric transmission,the cooling system of the engine compartment should be altered to meet the new requirement for the increasing in equipment such as electric apparatus.In order to predict and analyze the rationality of cooling system in the virtual engine compartment,the numerical simulation of airflow fields in the engine compartment by using computational fluid dynamics(CFD) technique is necessary.An armored vehicle with electric transmission in the research is taken as the research object.The physical model and mathematical model for the computation of 3D air flow and heat transfer in the engine compartment of an armored vehicle with electric transmission is established.Turbulent flow in the compartment is described by using the standard k-ε two-equation turbulence model.The temperature and velocity fields of 3D air flow in the engine compartment are numerically simulated and analyzed based on different fan's flux.A theoretical basis for determination of the fan's flux is given by the simulation results.The positions of the air-vent shutter are analyzed.The simulation results show that the different positions of the air-vent shutter can lead to different cooling efficiencies. 相似文献
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车辆冷却风扇调速技术的现状和发展 总被引:4,自引:0,他引:4
讨论了风扇传动采用调速装置的必要性,对现有几种风扇调速技术的原理进行了详尽的阐述,根据装甲车辆的特点和要求对未来风扇调速技术的发展趋势进行了探索. 相似文献