Guten Morgen.
Mit Ansys CFX wird eine verwinkelte Rohströmung simuliert.
Der Rohrdurschmesser beträgt 0.8m bei einer Gesamtlänge von ca. 35m.
Ideale Luft strömt mit 200°C und 3.5bar(abs) durch..
Die Rechnung konvergiert ganz gut.
Frage:
Kann das von den Werten her plausibel sein?!:
Yplus = 11021.1 (max.)
Solver Yplus = 12867.9 (max)
Reynolds Number = 4.6253E+07
Hier noch einige Werte...
| Variable Name | min | max |
+--------------------------------------------------------------------+
| Turbulence Eddy Frequency.Beta | 0.00E+00 | 1.00E+00 |
| Turbulence Kinetic Energy.Beta | 0.00E+00 | 1.00E+00 |
| Isothermal Compressibility | 2.83E-06 | 7.43E-06 |
| Thermal Conductivity | 2.61E-02 | 2.61E-02 |
| Courant Number | 1.97E-02 | 3.03E+02 |
| Density | 1.07E+00 | 2.60E+00 |
| Total Density | 1.29E+00 | 2.62E+00 |
| Density Derivative wrt Pressure at Constant| 7.24E-06 | 1.19E-05 |
| Static Enthalpy | -4.91E+03 | 1.84E+05 |
| Total Enthalpy | -3.43E+01 | 1.84E+05 |
| Static Entropy | -2.01E+02 | 3.12E+02 |
| Volume Porosity | 1.00E+00 | 1.00E+00 |
| Pressure.Gradient | 2.50E+00 | 9.21E+06 |
| Turbulence Eddy Frequency.Gradient | 3.91E-01 | 1.14E+07 |
| Turbulence Kinetic Energy.Gradient | 5.63E-02 | 7.38E+04 |
| Velocity u.Gradient | 9.37E-02 | 4.46E+04 |
| Velocity v.Gradient | 9.19E-02 | 4.67E+04 |
| Velocity w.Gradient | 1.44E-01 | 3.26E+04 |
| Wall Scale.Gradient | 1.06E-03 | 1.82E+01 |
| Mach Number | 3.73E-04 | 8.49E-01 |
| Absolute Pressure | 1.35E+05 | 3.53E+05 |
| Pressure | 3.32E+04 | 2.52E+05 |
| Total Pressure | 7.52E+04 | 2.55E+05 |
| P Mass.Residual | -1.45E-05 | 1.82E-05 |
| H Energy.Residual | -3.37E-02 | 1.30E-02 |
| U Mom.Residual | -1.86E-03 | 3.33E-03 |
| V Mom.Residual | -1.57E-03 | 1.73E-03 |
| W Mom.Residual | -3.02E-03 | 1.91E-03 |
| O TurbFreq.Residual | -4.83E-04 | 2.06E-03 |
| K TurbKE.Residual | -6.19E-03 | 1.02E-02 |
| Local Speed of Sound | 3.43E+02 | 4.40E+02 |
| Specific Heat Capacity at Constant Pressure| 1.00E+03 | 1.00E+03 |
| Specific Heat Capacity at Constant Volume | 7.17E+02 | 7.17E+02 |
| Specific Volume | 3.85E-01 | 9.39E-01 |
| First Blending Function for BSL and SST mod| 1.05E-12 | 1.00E+00 |
| Second Blending Function for SST model | 2.35E-02 | 1.00E+00 |
| Shear Strain Rate | 6.29E-01 | 5.26E+04 |
| Turbulence Eddy Dissipation | 8.98E+00 | 4.85E+06 |
| Turbulence Eddy Frequency | 3.43E+01 | 9.69E+04 |
| Temperature | 2.93E+02 | 4.81E+02 |
| Turbulence Kinetic Energy | 4.92E-01 | 1.70E+03 |
| Total Temperature | 2.98E+02 | 4.81E+02 |
| Velocity | 1.29E-01 | 3.48E+02 |
| Dynamic Viscosity | 1.83E-05 | 1.83E-05 |
| Eddy Viscosity | 3.47E-04 | 1.55E+00 |
| Wall Distance | 0.00E+00 | 2.33E+00 |
| Wall Scale | -3.25E-03 | 2.82E+00 |
Global Length = 3.7040E+00
Minimum Extent = 1.0816E+01
Maximum Extent = 1.7216E+01
Density = 2.2821E+00
Dynamic Viscosity = 1.8310E-05
Velocity = 1.0019E+02
Advection Time = 3.6969E-02
Reynolds Number = 4.6253E+07
Speed of Sound = 3.8040E+02
Mach Number = 2.6339E-01
Thermal Conductivity = 2.6100E-02
Specific Heat Capacity at Constant Pressure = 1.0044E+03
Specific Heat Capacity at Constant Volume = 7.1730E+02
Specific Heat Ratio = 1.4003E+00
Prandtl Number = 7.0462E-01
Temperature Range = 1.8787E+02
Vielen Dank!
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