convergence of 3D model pipe in Ansys 16

1. Pipe dia= 54.9 mm, length=3.8 m (asgiveninthe paper)
Elements=18 lakh (fig-1)
Pr = 2.14, density=973 kg/m3
,viscositymixture =0.000522 kg/m-s
Under relaxationfactorpressure =0.2, momentum= 0.2, volume fraction = 0.2, turbulent viscosity
= 0.8
For all the cases givenbelow the solutionisnotconverging. Sir,the firstfigure isthe same filewhich
youhave run on Saturday (i.e.18 lakh cells).After500 iterationthe solutionstartsdiverging
I alsorun the case for the no. of cell 5 lakh, 7 lakh , 10 lakh, 13 lakh, 15 lakh givenbelow in the fig
2, fig3. Fig4, fig5, fig6 and fig7 respectively.Butthe same ishappeningasinfirstfigure.
Figure -1

2. MeshQuality:
MinimumOrthogonal Quality = 8.09917e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 1.90083e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 4.24917e+01
Figure -2

3. MeshQuality:
MinimumOrthogonal Quality = 8.05384e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 1.94616e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 3.88310e+01
Figure -3

4. MeshQuality:
MinimumOrthogonal Quality = 8.02538e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 1.97462e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 3.64285e+01
Figure -4

5. MeshQuality:
MinimumOrthogonal Quality = 8.00461e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 1.99539e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 3.47926e+01
Figure -5

6. MeshQuality:
MinimumOrthogonal Quality = 7.99457e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 2.00543e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 3.41749e+01
Figure -6

7. MeshQuality:
MinimumOrthogonal Quality = 7.99456e-01
(Orthogonal Quality ranges from 0 to 1, where valuesclose to 0 correspond to low quality.)
MaximumOrtho Skew= 2.00544e-01
(Ortho Skewranges from 0 to 1, where valuesclose to 1 correspondto low quality.)
MaximumAspect Ratio = 3.41734e+01
Figure -7

8. Wall mesh