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# Decision Center

1. 1. Topics in this section

The Decision Center is a simple yet powerful environment for comparing design alternatives. Use it to identify the design that satisfies your design objectives.

It is a powerful tool for:

• Extracting specific results values
• Comparing results from multiple scenarios

Visualization objects such as Results Parts, Results Planes, Result Points, and XY-plots form the basis of the Decision Center. Create an object on one Scenario, designate it as a "Summary" object, and the Decision Center computes the results on every scenario in the Study.

To open the Decision Center, click Results (tab) > Compare (panel) > Decision Center. The Decision Center appears in the lower half of the Design Study bar.

Use the Decision Center to manage all summary items:

There are three principal components of the Decision Center:

Design Review Center: Visual

Use the Design Review Center to compare results from multiple scenarios visually. It is a powerful tool for comparing flow and thermal performance of two or more scenarios in a design study.

Compare results either by incrementing through a set of scenarios in a single view or by positioning multiple images side-by-side.

Use the Design Review Center to answer questions like "Which design produces the most uniform flow distribution?" and "Which design keeps the critical components coolest?"

Critical Values: Tabular

Use Critical Values for comparing results from individual and multiple scenarios.

There are three types of Critical Values Entities. Each is based on a different Summary Entity type. Each answers questions such as "What is the maximum temperature?", "Which design produces the lowest pressure drop?", "Does the velocity at a point near a critical component exceed a design limit?"

Summary Parts

Summary Parts are used to assess results on Fluids, Solids, Internal Fans, and Compact Thermal models. Use them to extract the following quantities:

 Material or Device type Critical Values Quantities Fluids and Solids Volume Average, Maximum, and Minimum Temperature Compact Thermal Model Board temperature Board heat flux Case temperature Case heat flux Junction temperature Internal Fans Flow rate pressure drop

Use Summary Parts to answer questions like: "What is the maximum temperature on these chips?" and "What is the operating condition of this fan?"

Summary Planes

Summary Planes are planar cutting surfaces at critical locations in the model. Average values from each summary plane are presented in the Critical Values table. Summary Planes are ideal for:

• Determining the pressure, flow rate, and average flow velocity through a channel or at an opening
• Comparing results at openings from several design alternatives.

Use Summary Planes to answer questions like: "Which design produced the lowest pressure drop?" and "Which leg of the manifold has the highest flow rate?"

Summary Points

Summary Points are locations within a model on which specific result quantities are monitored. Summary Points are ideal for:

• Determining the temperature, pressure, or local velocity at critical locations within a model
• Comparing results at finite points from several design alternatives

Use Summary Points to answer questions like: "Which design produces the most uniform velocity or temperature distribution across a set of points?" and "Does the pressure at a point near a critical component exceed a design limit?"

Results are presented in a spreadsheet-like table in the Critical Values tab of the Output Bar. The Critical Values table provides a simple way to quickly extract, present, and compare results from individual and multiple scenarios.

XY Plot Data: Graphical

Compare results by overlaying XY Plot data from multiple scenarios on a single plot.

Use Summary Plots to answer questions like: "How does the pressure vary across the flow channel as the design is changed?" and "How does the temperature gradient respond as the design is modified?"