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建立了滑移装载机动力舱内三维空气流动数学模型,采用稳态不可压缩雷诺平均N-S方程,紊流模型选择k-ε两方程模型,应用非结构化网格和有限体积法进行计算区域和控制方程的离散。将散热器芯部作为多孔介质处理,风扇用CFD软件FLUENT中的Fan模型代替。对不同风扇流量下动力舱内空气流场进行了数值模拟与分析,为风扇流量的确定提供了理论依据。提出增加进风口数量和增加隔热板等措施改变发动机舱的内部温度场,并进行了计算和试验,结果表明,这种数值模拟方法可以用于动力舱空气流动分析。
The mathematical model of three-dimensional air flow in the powerhouse of skid steer loader was established. The steady-state incompressible Reynolds-averaged Navier-Stokes equations and turbulence model were used to select the k-ε two-equation model. The unstructured grid and finite volume method Discrete control equations. The radiator core is treated as a porous medium and the fan is replaced by the Fan model in CFD software FLUENT. The numerical simulation and analysis of the air flow field in the power cabin under different fan flow rates provide a theoretical basis for the determination of the fan flow rate. Proposed to increase the number of inlet and increase the insulation board and other measures to change the internal temperature of the engine compartment, and the calculation and test results show that this numerical simulation method can be used for power cabin air flow analysis.