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基于湍流的数学模型,用FVM软件FLUENT计算了高压气体淬火过程金属表面的热流密度。计算中考虑了物性参数随温度和压强的变化,以及金属表面辐射随温度变化对换热的影响。计算表明金属的各表面由于对流情况的不同而有不同的换热系数,气压对气淬金属换热有较大的影响。
Based on the mathematical model of turbulence, the Flux software FLUENT was used to calculate the heat flux density of metal surface during high-pressure gas quenching. The calculation takes into account the changes of physical parameters with temperature and pressure, as well as the influence of metal surface radiation with temperature on heat transfer. Calculations show that each surface of the metal has different heat transfer coefficient due to the different convection conditions, and the pressure has a greater influence on the heat transfer of the gas-quenched metal.