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首页> 外文会议>International Symposium on Heating, Ventilating and Air Conditioning vol.1; 20031009-11; Beijing(CN) >NUMERICAL TEST CHAMBER FOR OFF-ROAD VEHICLE CABIN ENVIRONMENT
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NUMERICAL TEST CHAMBER FOR OFF-ROAD VEHICLE CABIN ENVIRONMENT

机译：越野车舱环境的数值测试室

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摘要

Vehicles, especially so-called off-road vehicles (i.e. forest, agricultural and other mobile heavy machinery) are a working place for many people. In this work a numerical test chamber for summer-climate conditions is developed by means of computational fluid dynamics (CFD). Main environmental differences between the cabin and an ordinary room are identified and compared. These are primarily differences in geometry and available space, glass area coverage, supply and exhaust flow rates, and differences in intensity and location of the heat loads. A fundamental airflow model, consisting of the continuity, momentum and energy equations together with the k-ε turbulence model, is used. Boundary conditions are specified from previous laboratory and field experiences. Preliminary calculation results show strong momentum forces and mixing in the cabin. High-speed jet air supply is needed to deal with the substantial heat loads. The influence of buoyancy on the flow structure is therefore relatively small. Hot surfaces result in strong thermal radiation. This numerical test chamber can be used to find acceptable climate conditions for the7 operator of a real vehicle cabin.
机译：车辆，特别是所谓的越野车辆（即森林，农业和其他移动式重型机械）是许多人的工作场所。在这项工作中，通过计算流体动力学（CFD）开发了一种夏季气候条件的数值试验箱。识别并比较客舱和普通房间之间的主要环境差异。这些主要是几何形状和可用空间，玻璃区域覆盖范围，供气和排气流量的差异，以及热负荷的强度和位置的差异。使用了基本的气流模型，该模型由连续性，动量和能量方程式以及k-ε湍流模型组成。边界条件是根据以前的实验室和现场经验指定的。初步计算结果表明，机舱内有很强的动量力和混合力。需要高速喷射空气供应以应对大量的热负荷。因此，浮力对流动结构的影响相对较小。热表面会导致强烈的热辐射。该数字测试室可用于为实际车厢的操作员查找可接受的气候条件。

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