钢管冷却喷淋水量对换热系数的影响

 采用一种钢管外喷淋装置，通过在钢管中预埋热电偶测量钢管冷却期间的温降曲线，研究了喷淋水量对钢管冷却强度的影响。利用有限元模拟软件对测量结果进行分析，建立了钢管表面对流换热系数和水流密度的数学关系模型，将模型嵌入了钢管温度场计算软件当中，软件的计算精度进行了工程验证。结果表明，融合了该换热数学模型的钢管温度场模拟软件计算精度达到90％以上。

Effect of Water Flux on Heat Transfer Coefficient for Steel Pipe Cooling

The effect of water flux on cooling degree of steel pipe was investigated by using a pipe-outside jet cooling device and thermal couples welded in pipe for recording the pipe temperature during cooling. The mathematic model between heat transfer coefficient and water flux was established with the aid of finite element analysis. The model was embedded in steel pipe temperature field calculation software. And then calculation accuracy of the software was verified by the engineering practice. The result shows that accuracy of the steel pipe temperature field calculation software containing the mathematic model is up to above 90%.