mixtures https://www.crtech.com/ en Optimization and Automated Data Correlation in the NASA Standard Thermal/Fluid System Analyzer https://www.crtech.com/optimization-and-automated-data-correlation-nasa-standard-thermalfluid-system-analyzer <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--title--publication-files.html.twig x field--node--title.html.twig * field--node--publication-files.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Optimization and Automated Data Correlation in the NASA Standard Thermal/Fluid System Analyzer</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--uid--publication-files.html.twig x field--node--uid.html.twig * field--node--publication-files.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> <span lang="" about="/user/1" typeof="schema:Person" property="schema:name" datatype="">bfc-admin</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--created--publication-files.html.twig x field--node--created.html.twig * field--node--publication-files.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'time' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> <time datetime="2015-07-15T15:14:34-04:00" title="Wednesday, July 15, 2015 - 15:14" class="datetime">Wed, 07/15/2015 - 15:14</time> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'links__node' --> <!-- FILE NAME SUGGESTIONS: x links--node.html.twig x links--node.html.twig * links.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--body--publication-files.html.twig * field--node--body.html.twig * field--node--publication-files.html.twig * field--body.html.twig x field--text-with-summary.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>SINDA/FLUINT (Ref 1-7) is the NASA-standard heat transfer and fluid flow analyzer for thermal control systems. Because of its general formulation, it is also used in other aerospace specialties such as environmental control (ECLSS) and liquid propulsion, and in terrestrial industries such as electronics packaging, refrigeration, power generation, and transportation industries.</p> <p>SINDA/FLUINT is used to design and simulate thermal/fluid systems that can be represented in networks corresponding to finite difference, finite element, and/or lumped parameter equations. In addition to conduction, convection, and radiation heat transfer, the program can model steady or unsteady single- and two-phase flow networks.</p> <p>C&amp;R’s SinapsPlus® is a complete graphical user interface (preand postprocessor) and interactive model debugging environment for SINDA/FLUINT (Ref 8, 9). SinapsPlus also supports the C language in addition to the traditional choice of Fortran for concurrently executed user logic.</p> <p>This paper describes revolutionary advances in SINDA/FLUINT, the NASA-standard heat transfer and fluid flow analyzer, changing it from a traditional point-design simulator into a tool that can help shape preliminary designs, rapidly perform parametrics and sensitivity studies, and even correlate modeling uncertainties using available test data.</p> <p>Innovations include the incorporation of a complete spreadsheet-like module that allows users to centralize and automate model changes, even while thermal/fluid solutions are in progress. This feature reduces training time by eliminating many archaic options, and encourages the performance of parametrics and other what-if analyses that help engineers develop an intuitive understanding of their designs and how they are modeled.</p> <p>The more revolutionary enhancement, though, is the complete integration of a nonlinear programming module that enables users to perform formal design optimization tasks such as weight minimization or performance maximization. The user can select any number of design variables and may apply any number of arbitrarily complex constraints to the optimization. This capability also can be used to find the best fit to available test data, automating a laborious but important task: the correlation of modeling uncertainties such as optical properties, contact conductances, as-built insulation performance, natural convection coefficients, etc.</p> <p>Finally, this paper presents an overview of related developments that, coupled with the optimization capabilities, further enhance the power of the whole package.</p> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-upload-files--publication-files.html.twig * field--node--field-upload-files.html.twig * field--node--publication-files.html.twig * field--field-upload-files.html.twig * field--file.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-upload-files field--type-file field--label-inline clearfix"> <div class="field__label">Upload Files</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'file_link' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> <span class="file file--mime-application-pdf file--application-pdf"> <a href="/sites/default/files/publications/sfpaper_0.pdf" type="application/pdf">sfpaper.pdf</a></span> <!-- END OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> </div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-source--publication-files.html.twig * field--node--field-source.html.twig * field--node--publication-files.html.twig * field--field-source.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-source field--type-string field--label-inline clearfix"> <div class="field__label">Source</div> <div class="field__item">IECEC</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-author--publication-files.html.twig * field--node--field-author.html.twig * field--node--publication-files.html.twig * field--field-author.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-author field--type-string field--label-inline clearfix"> <div class="field__label">Author</div> <div class="field__item">Brent A. Cullimore</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> Wed, 15 Jul 2015 19:14:34 +0000 bfc-admin 1190 at https://www.crtech.com Optimization, Data Correlation, and Parametric Analysis Features in SINDA/FLUINT Version 4.0 https://www.crtech.com/optimization-data-correlation-and-parametric-analysis-features-sindafluint-version-40 <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--title--publication-files.html.twig x field--node--title.html.twig * field--node--publication-files.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Optimization, Data Correlation, and Parametric Analysis Features in SINDA/FLUINT Version 4.0</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--uid--publication-files.html.twig x field--node--uid.html.twig * field--node--publication-files.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> <span lang="" about="/user/1" typeof="schema:Person" property="schema:name" datatype="">bfc-admin</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--created--publication-files.html.twig x field--node--created.html.twig * field--node--publication-files.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'time' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> <time datetime="2015-07-15T14:03:58-04:00" title="Wednesday, July 15, 2015 - 14:03" class="datetime">Wed, 07/15/2015 - 14:03</time> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'links__node' --> <!-- FILE NAME SUGGESTIONS: x links--node.html.twig x links--node.html.twig * links.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--body--publication-files.html.twig * field--node--body.html.twig * field--node--publication-files.html.twig * field--body.html.twig x field--text-with-summary.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>This paper describes revolutionary advances in SINDA/FLUINT, the NASA-standard heat transfer and fluid flow analyzer, changing it from a traditional point-design simulator into a tool that can help shape preliminary designs, rapidly perform parametrics and sensitivity studies, and even correlate modeling uncertainties using available test data.</p> <p>Innovations include the incorporation of a complete spreadsheet-like module that allows users to centralize and automate model changes, even while thermal/fluid solutions are in progress. This feature reduces training time by eliminating many archaic options, and encourages the performance of parametrics and other what-if analyses that help engineers develop an intuitive understanding of their designs and how they are modeled.</p> <p>The more revolutionary enhancement, though, is the complete integration of a nonlinear programming module that enables users to perform formal design optimization tasks such as weight minimization or performance maximization. The user can select any number of design variables and may apply any number of arbitrarily complex constraints to the optimization. This capability also can be used to find the best fit to available test data, automating a laborious but important task: the correlation of modeling uncertainties such as optical properties, contact conductances, as-built insulation performance, natural convection coefficients, etc.</p> <p>Finally, this paper presents an overview of related developments that, coupled with the optimization capabilities, further enhance the power of the whole package.</p> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-upload-files--publication-files.html.twig * field--node--field-upload-files.html.twig * field--node--publication-files.html.twig * field--field-upload-files.html.twig * field--file.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-upload-files field--type-file field--label-inline clearfix"> <div class="field__label">Upload Files</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'file_link' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> <span class="file file--mime-application-pdf file--application-pdf"> <a href="/sites/default/files/publications/sf981574.pdf" type="application/pdf">sf981574.pdf</a></span> <!-- END OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> </div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-source--publication-files.html.twig * field--node--field-source.html.twig * field--node--publication-files.html.twig * field--field-source.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-source field--type-string field--label-inline clearfix"> <div class="field__label">Source</div> <div class="field__item">ICES 1998</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-author--publication-files.html.twig * field--node--field-author.html.twig * field--node--publication-files.html.twig * field--field-author.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-author field--type-string field--label-inline clearfix"> <div class="field__label">Author</div> <div class="field__item">Brent A. Cullimore</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> Wed, 15 Jul 2015 18:03:58 +0000 bfc-admin 1181 at https://www.crtech.com Propulsion Applications of the NASA Standard General Purpose Thermohydraulic Analyzer https://www.crtech.com/propulsion-applications-nasa-standard-general-purpose-thermohydraulic-analyzer <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--title--publication-files.html.twig x field--node--title.html.twig * field--node--publication-files.html.twig * field--title.html.twig * field--string.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <span class="field field--name-title field--type-string field--label-hidden">Propulsion Applications of the NASA Standard General Purpose Thermohydraulic Analyzer</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--title.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--uid--publication-files.html.twig x field--node--uid.html.twig * field--node--publication-files.html.twig * field--uid.html.twig * field--entity-reference.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <span class="field field--name-uid field--type-entity-reference field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'username' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> <span lang="" about="/user/1" typeof="schema:Person" property="schema:name" datatype="">bfc-admin</span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/user/username.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--uid.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--created--publication-files.html.twig x field--node--created.html.twig * field--node--publication-files.html.twig * field--created.html.twig * field--created.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <span class="field field--name-created field--type-created field--label-hidden"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'time' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> <time datetime="2015-07-15T13:46:45-04:00" title="Wednesday, July 15, 2015 - 13:46" class="datetime">Wed, 07/15/2015 - 13:46</time> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/time.html.twig' --> </span> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--node--created.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'links__node' --> <!-- FILE NAME SUGGESTIONS: x links--node.html.twig x links--node.html.twig * links.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/content/links--node.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--body--publication-files.html.twig * field--node--body.html.twig * field--node--publication-files.html.twig * field--body.html.twig x field--text-with-summary.html.twig * field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <div class="clearfix text-formatted field field--name-body field--type-text-with-summary field--label-hidden field__item"><p>The NASA standard tool for thermohydraulic analysis, SINDA/FLUINT, includes thermodynamic and hydrodynamic solutions specifically targeted at the growing demand for design and analysis of liquid propulsion systems. Applications in this field have included:</p> <ul> <li>Helium pressurization system design</li> <li>Cryogenic line chill-down transients</li> <li>Regenerative nozzle cooling</li> <li>Cryogenic turbomachinery chill-down transients</li> <li>Hydrazine line filling</li> <li>Feedline transients, including pogo suppression</li> <li>Feedline anti-geyser design</li> <li>Cryogenic tank pressurization and discharge, including thermal stratification, dissolved pressurant, and capillary liquid acquisition devices</li> </ul> <p>Many organizations have previously used separate in-house tools specialized for each of the above applications. However, these organizations typically do not have the resources nor infrastructure to maintain these codes when cognizant engineers are lost, nor to modify and validate them for new vehicles or applications, nor to train new engineers on their use.</p> <p>The use of a single general-purpose tool to encompass all such analyses offers not only solutions to the above problems, but also enables integrated analyses and the ability to communicate with vendors and customers.</p> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field--text-with-summary.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-upload-files--publication-files.html.twig * field--node--field-upload-files.html.twig * field--node--publication-files.html.twig * field--field-upload-files.html.twig * field--file.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-upload-files field--type-file field--label-inline clearfix"> <div class="field__label">Upload Files</div> <div class="field__item"> <!-- THEME DEBUG --> <!-- THEME HOOK: 'file_link' --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> <span class="file file--mime-application-pdf file--application-pdf"> <a href="/sites/default/files/publications/propulse.pdf" type="application/pdf">propulse.pdf</a></span> <!-- END OUTPUT from 'themes/crtechd9/templates/field/file-link.html.twig' --> </div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-source--publication-files.html.twig * field--node--field-source.html.twig * field--node--publication-files.html.twig * field--field-source.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-source field--type-string field--label-inline clearfix"> <div class="field__label">Source</div> <div class="field__item">CRTech White Paper</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <!-- THEME DEBUG --> <!-- THEME HOOK: 'field' --> <!-- FILE NAME SUGGESTIONS: * field--node--field-author--publication-files.html.twig * field--node--field-author.html.twig * field--node--publication-files.html.twig * field--field-author.html.twig * field--string.html.twig x field.html.twig --> <!-- BEGIN OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> <div class="field field--name-field-author field--type-string field--label-inline clearfix"> <div class="field__label">Author</div> <div class="field__item">Brent A. Cullimore, Cynthia M. Beer, David A. Johnson</div> </div> <!-- END OUTPUT from 'themes/crtechd9/templates/classy/field/field.html.twig' --> Wed, 15 Jul 2015 17:46:45 +0000 bfc-admin 1167 at https://www.crtech.com