《Table 1 Comparison of pre se nt simulations with the re sults by Que rtatani e t al.and Turan e t a

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《POD Analysis and Low-Dimensional Model Based on POD-Galerkin for Two-Dimensional Rayleigh-Bénard Convection》

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Firstly，w e need to check our code.For a comparison，w e calculated RB convection at four different Ra number.The results are compared w ith the outcome in Quertatani et al.[41]and Turan et al.[42]，as show n in Table 1.It can be found clearly from Table 1that the present results agree extremely w ell w ith the corresponding studies in Refs.[41]and[42].It suggests that the DNS code in Open FOAM is correct.