Estimating power consumption of agitators paper help !!

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Estimating Power Consumption of Agitators
de Gouvêa, Miriam T; Crisi, Giovanni S; Leitão, Alfredo P. Chemical Engineering106.12 (Nov 1999): 129-130,132.
Article Abstract:


A Fortran 77 program cuts through the clutter in sizing mixers

Nothing agitates a project engineer quite as strongly as determining the power consumption of an agitator. The parameters involved in agitator calculations are not as precisely determined as those used for pumps, and the formulas and graphs are scattered throughout the literature. As a result, the engineer feels uncertain and confused.
One way to get an answer is to ask for information from vendors. It is common to receive several bids for the same piece of equipment and find power consumption varying among them by 100%. The manufacturer's experience is the source of this variation. The engineer typically will play it safe, and select the largest value at the start of the design process. This simple approach can cost money, since the electrical distribution system has to be sized to carry the load.
A better estimate of agitator power will benefit many projects. This article introduces a computer program that estimates the power consumption of the most common types of agitators. We claim a degree of accuracy equal to the accuracy of the reference correlations. Meanwhile, a project has been started at Mackenzie U. (Sao Paulo) to determine the exact accuracy. The program results will be compared to a set of vendor proposals and also to a set of power measurements that will be made on agitators in service in the Sao Paulo area.
The program is very useful in the early stages of a new plant design, when the engineer needs power consumption information, to figure out the plant power draw, and to set up distribution systems. It is usually too early to go to vendors. Another useful situation for this program is when converting old equipment to new uses. The agitator will be used in operating conditions different from those of the original design. It is useful to know if the whole unit, or at least some parts, can be salvaged.
There are a few instances where the program may not be so useful, such as stirring a liquid that tends to foam or designing with an unusual impeller shape. However, it is not our intent to automatically exclude any proposal where actual power consumption does not coincide with the projected program results. In these cases, the project engineer should meet with the vendors, discuss the discrepancies, and make a decision based on engineering judgment.

Is anyone have this paper kindly shared with me , the Calculating is not easy, I would very appreciated your help, and would like to exchange the excel VBA code for the various type of agitators ?

Thank you so much.