HEEDS Technical Tips
Through these tips, our engineers share their strategies for accomplishing specialized tasks using HEEDS software. If you have a question you would like our engineers to answer with a technical tip, please feel free to contact us.
Quickly Identifying Runtime Errors
Before launching a HEEDS study, it is important to make sure that there are no errors in the model setup. Any unresolved errors can result in the loss of valuable time. For example, a HEEDS study with undetected runtime errors, executed to run unmonitored over the weekend, could result in the loss of up to three days of computational time. This tip will describe a few different techniques you can use to quickly identify potential runtime errors without performing complete design evaluations.
Eliminating Setup Errors before a Shape Optimization Run
In shape optimization studies, it is important to have a robust parametric model for creating new designs. This tip demonstrates how to quickly identify potential errors in the parametric model prior to running the full HEEDS study.
Imposing Constraints on Design Variables
This tip demonstrates how to redefine design variables such that HEEDS only creates designs that meet the imposed constraints.
Searching the Log Space of a Design Variable
In cases where a design variable ranges over several orders of magnitude, it often makes sense to define the variable range in log space instead of linear space. Searching the log space allows you to find the value of the design variable that is within a certain percentage of the actual best value, as opposed to an absolute precision. Instances when it is appropriate to use this technique may include curve-fitting and determining chemical rate constants. In this HEEDS tip, search of the log space is explained and instructions are given for how to set this up in HEEDS.
Quickly Identifying Runtime Errors
Before launching a HEEDS study, it is important to make sure that there are no errors in the model setup. Any unresolved errors can result in the loss of valuable time. For example, a HEEDS study with undetected runtime errors, executed to run unmonitored over the weekend, could result in the loss of up to three days of computational time. This tip will describe a few different techniques you can use to quickly identify potential runtime errors without performing complete design evaluations.
Eliminating Setup Errors before a Shape Optimization Run
In shape optimization studies, it is important to have a robust parametric model for creating new designs. This tip demonstrates how to quickly identify potential errors in the parametric model prior to running the full HEEDS study.
Imposing Constraints on Design Variables
This tip demonstrates how to redefine design variables such that HEEDS only creates designs that meet the imposed constraints.
Searching the Log Space of a Design Variable
In cases where a design variable ranges over several orders of magnitude, it often makes sense to define the variable range in log space instead of linear space. Searching the log space allows you to find the value of the design variable that is within a certain percentage of the actual best value, as opposed to an absolute precision. Instances when it is appropriate to use this technique may include curve-fitting and determining chemical rate constants. In this HEEDS tip, search of the log space is explained and instructions are given for how to set this up in HEEDS.
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