Auto Blend CalculationΒΆ

Users can automatically calculate the tank blend time using the Calculate Tank Blendtime command. After selecting this option from the Menu, users will be prompted to enter a particle injection point, number of particles, and injection time. These values represent the location, quantity, and time at which tracer particles are added to the system. Next, users will be prompted to specify a number of sub volumes in the x-, y- and z-directions. These sub-volumes are used to calculate the coefficient of variation of particles across the tank. The extents of these bins, the amount of fluid inside each bin, and the equilibrated particle count are reported in the solver log file prior to the first iteration.

At a time interval equal to the Slice Output time interval, the solver reports the instantaneous Blending COV and the normalized particle concentration in each bin.

The precision of the COV calculation is related to the number of bins and the number of particles. In general, users should inject at least 5000 particles per sub-volume.

For free surface simulations, the particle injection point should be below the fluid height.

Number Bins X

Number of bins in X direction

Number Bins Y

Number of bins in Y direction

Number Bins Z

Number of bins in Z direction

Start Time

Auto blend calculation start time [s]

Number Of Particles

Number of particles

Particle Injection Point

Start point of particles [Template Units]

Particle Density

Density of the particles used in the autoblendtime calculation

Particle Diameter

Diameter of the particles used in the autoblendtime calculation [Template Units]

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