FAQ




What is the difference between VisiMix and other mixing calculation software products?

VisiMix is the first and the only software developed by highly qualified mixing professionals. The VisiMix development team includes world renowned scientists with more the 100 years of combined experience in:
-research and mathematical modeling of mixing, and heat and mass transfer;
-development of new processes and equipment for different branches of the chemical and process industry
-designing, testing, manufacturing, and operating of all types of industrial mixing equipment

VisiMix is the first and only software product that, together with local and average characteristics of flow, provides complete information on mixing, heat and mass transfer parameters that are directly connected to the object and purpose of each process.
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VisiMix is the first and the only mixing software that for more than 15 years has been used successfully by many leading chemical and machinery companies worldwide (DOW Chemicals, Pfizer, DeDietrich, Teva, etc.).
Our Costumers

Only VisiMix customers obtain technical support provided by a team of chemical and physical engineers that includes world renowned professionals in mixing, process, and equipment development.
Our Team


Does VisiMix support modeling of mixing with impellers of new designs?

VisiMix supports the modeling of mixing with impellers of any industrial design. A complete set of dimensions and angles of the blades is required for an exact simulation. If such data are not accessible, VisiMix provides recommendations for the approximate input that would result in an acceptable degree of accuracy of the simulation.


Is the VisiMix software easily accessible to engineers or does it require additional training?

No additional knowledge is needed to use the VisiMix software, and the simulation is easily accessible to any engineer. To become acquainted with user interface of the program, we recommend downloading the free version of VisiMix
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How is it possible to input a tank with a semi-spherical bottom?

Specify a tank with an elliptical bottom. The difference does not affect mixing and can be neglected for the purpose of calculations and modeling.


How do I proceed if cone angle (CA) is more than 60 degrees?

Enter an equivalent angle (EA) estimate: EA = (180 – CA)/2.
For example, real CA = 150 degrees. EA = (180-150)/2 = 15 degrees


Does VisiMix provide simulation of temperature distribution? Is it possible to define when a uniform temperature distribution is achieved?

If flow is turbulent, a significant change in local temperature occurs at the boundary layer, but only along the heat transfer surfaces. VisiMix provides the values of the temperature on these surfaces in the HEAT TRANSFER sections.

Differences in local temperatures for the bulk of mixing reactors in a turbulent regime are always below the boundaries of practical importance. This is because the heat conductivity of liquids is about 1000 times higher than diffusivity, and the maximum rate of local heat release cannot be too high because of the turbulent mixing. These results are in complete agreement with the mathematical models used by VisiMix. At some point in our research we conducted a special study on this topic, and we were able to achieve a measurable difference of local temperatures only in experimental mixing vessels of a very special design.

For all practical purposes, temperature in bulk of reactors in a turbulent mixing regime can be treated as uniform.


Is it possible to use VisiMix for a tank with two helical ribbons of different diameter?

Yes, it is. In laminar a regime, the power consumption for each ribbon can be calculated independently. The same rule can be used for an approximate calculation of the flow capacity of each ribbon.


How are the number and size of radial arms defined for a helical ribbon?

The number and width of radial arms are defined by the designer based on mechanical calculations.


Is it possible to change the number or pitch of ribbons?

VisiMix supports for 1 to 4 ribbons with a pitch ranging from 0.5 to 2 diameters. This covers the range of helical ribbon applications, within their practical limits.


Does VisiMix define the required shaft diameter automatically?

The design and diameter of shaft are determined by the designer. VisiMix provides options for mechanical calculations of shaft torsion and vibrational stability.


Is it possible to model mixing when using magnetic stirrers and stirring bars?

VisiMix can be used with laboratory mixers, including magnetic ones. In the case of the usual magnetic mixers the modeling is approximate because of the “zero” distance between the impeller and the bottom of the tank.


How do we use VisiMix Turbulent for tanks with a helical ribbon agitator?

In a turbulent regime, the helical ribbon can be treated as an anchor agitator with the same width, number, height, and tip diameter of blades.


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