用rhoPimpleFoam计算飞机外流，为什么iteration为0
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各位大佬，想问一下我计算一个飞机模型的外流，设置的dt为2e-8，但是不知道为什么从最开始就是No Iterations 0，这是没在计算嘛？刚开始设置的dt为5e-8，计算一段时间就发散了。
Courant Number mean: 7.5311001e-06 max: 0.56432736 Time = 1.2e-07 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCGStab: Solving for Ux, Initial residual = 6.9178663e-11, Final residual = 6.9178663e-11, No Iterations 0 DILUPBiCGStab: Solving for Uy, Initial residual = 2.5448919e-10, Final residual = 2.5448919e-10, No Iterations 0 DILUPBiCGStab: Solving for Uz, Initial residual = 4.2785621e-10, Final residual = 4.2785621e-10, No Iterations 0 DILUPBiCGStab: Solving for e, Initial residual = 9.7719937e-09, Final residual = 1.0109782e-12, No Iterations 1 GAMG: Solving for p, Initial residual = 7.8947472e-09, Final residual = 7.8947472e-09, No Iterations 0 GAMG: Solving for p, Initial residual = 7.8947472e-09, Final residual = 7.8947472e-09, No Iterations 0 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 time step continuity errors : sum local = 1.0995375e-11, global = -1.6176582e-13, cumulative = -8.4645739e-13 GAMG: Solving for p, Initial residual = 7.8947534e-09, Final residual = 7.8947534e-09, No Iterations 0 GAMG: Solving for p, Initial residual = 7.8947534e-09, Final residual = 7.8947534e-09, No Iterations 0 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 time step continuity errors : sum local = 1.0995384e-11, global = -1.6176582e-13, cumulative = -1.0082232e-12 DILUPBiCGStab: Solving for nuTilda, Initial residual = 9.7105217e-10, Final residual = 9.7105217e-10, No Iterations 0 -
