A complete list of parameters is given in the Commands Manual. Optimization parameters are defined as command items in the <OPT_PARAM> command. Two optimization parameters are important:
<RESULT_STORE_INTERVAL>The parameter <RESULT_STORE_INTERVAL> can be used to determine in which iterations of the optimization intermediate results are to be stored in the optimization database. The parameter is of type INTEGER_LIST, that is, a single iteration number might be given or a range of iterations:
In this example, intermediate results are stored in iteration 100, 200, …, 800. Intermediate results that are stored using the <RESULT_STORE_INTERVAL> parameter are written to the optimization database. After the optimization process, Tosca Fluid.post can be used to extract these results in conjunction with different result extractions methods as explained in the Methods Manual. Extracted results can then be written to files in different file formats for post processing operations. The results of the last two iterations are always stored to the SIMULIA Tosca Fluid database by default. Note:
The <OPT_PARAM> command must be referenced within
the <OPTIMIZE> command.
Important Note: If the results are stored in a large number of iterations, very large amounts of data might accumulate in the SIMULIA Tosca Fluid database and in the file system. <OPT_START>The <OPT_START> parameter is used to determine the CFD solver iteration in which the SIMULIA Tosca Fluid optimization starts. It is recommended that the CFD solution reached a medium quality solution before the optimization start iteration is reached. By default SIMULIA Tosca Fluid uses an optimization start iteration of 300. You can change the optimization start iteration using the <OPT_START> command item within your <OPT_PARAM> command. For example to set the optimization start iteration to 250 use:
Important Note: You might adjust the optimization start iteration depending on the CFD solution convergence behavior of your CFD model. | |||||||