Session Descriptions

This year's TFAWS will include the following sessions:

Paper Sessions

Active Thermal

Passive Thermal

Aerothermal

Interdisciplinary

Paper Session #1
Tuesday: 1:30 pm - 5:30 pm
Grand Ballroom III
Session Chairs: Georg Siebes (NASA-JPL) & Eric Grob (NASA-GSFC)

Short Courses

Active Thermal

Spacecraft Active Thermal Control Course
Wednesday: 8:00 am - 12:00 pm
Grand Ballroom III
Instructors: Gene Ungar & Rubik Sheth (NASA-JSC)

The philosopher Will Smith said, “It’s hard to know where you are going when you don’t know where you’ve been.” Active thermal control has been a feature of every human spacecraft. In this course the history of US spacecraft active thermal control is traced, from Gemini through the current Multi Purpose Crew Vehicle program. The evolving heat load, temperature control, and safety requirements are discussed with an emphasis on how they have driven active thermal design and the resulting active thermal control systems. In addition, a review of present technologies for active thermal control will be discussed.

Passive Thermal

Thermal Properties Testing for Accurate Analysis Course
Monday: 10:15 am - 12:00 pm
Grand Ballroom V
Instructor: Kamran Daryabeigi (NASA-LaRC)

This short course discusses the need for accurate thermal properties for conducting accurate thermal analysis. Large discrepancies in recently reported thermal and radiative properties measured using different techniques at different laboratories will be presented. Different thermal property measurement techniques will be briefly described. The tutorial’s special emphasis will be on proper thermal modeling, thermal testing, and thermal property measurement for reusable high-temperature fibrous insulations.

On-Orbit Thermal Environments Course
Monday: 8:00 am - 12:00 pm
Grand Ballroom III
Instructor: Steve Rickman (NASA-NESC)

Thermal control analyses are driven by environmental heating conditions. This math-based course provides a detailed introduction to the on-orbit thermal environment. Students will gain an understanding of the factors used to derive solar flux, albedo and planetary infrared heating and how they are applied in real analyses. Expressions for environmental heating parameters will be derived. The beta angle is explored in detail including its derivation and its effect on the on-orbit thermal environment. The course concludes with illustrative examples designed to enhance the students’ insights into on-orbit environmental heating.

Aerothermal

Entry, Descent, and Landing (EDL) Course
Monday: 1:30 pm - 5:30 pm
Grand Ballroom III
Instructor: John Dec (NASA-LaRC)

This course will investigate the challenges of spacecraft planetary Entry, Descent, and Landing (EDL). Design of an entry system requires a working knowledge of interplanetary navigation, atmospheric, aerodynamic, aero-thermodynamic, structural, and control issues. In this course, each of these disciplines will be introduced and the guiding principles behind entry, descent and landing systems design will be discussed. Future technology trends will also be presented. This course is designed for engineers and scientists interested in gaining a working knowledge of planetary entry, descent and landing. Examples drawn for experience in recent NASA programs will be used to illustrate the physical principles described.

Aerothermal Flight Instrumentation Course
Wednesday: 1:30 pm - 5:30 pm
Grand Ballroom V
Instructors: Tom Horvath (NASA-LaRC), Colin Brooks (NASA-MSFC), Chris Parlier (NASA-KSC), & Debbie Levin (Penn State University)

This session will focus on the aerothermal instrumentation and measurement techniques available for flight testing. Aspects of the course will include on-board instrumentation, off-board measurements as well as radiation/spectral measurements.

Note: This course will be broadcast live over the internet and/or recorded for future use in conference proceedings, courtesy of the NESC.

Aerothermal Ground Test Techniques Course
Wednesday: 10:15 am - 12:00 pm
Grand Ballroom V
Instructor: Shann Rufer & Tom Horvath(NASA-LaRC)

This course will present an overview of the various aerothermal ground test techniques available to researchers, including but not limited to thermocouples, global phosphor thermography, high frequency instrumentation, etc. and investigate various methods for making aerothermal measurements on flight vehicles.

Vehicle Analysis, Integration, and Material Response Course (ITAR)
Thursday: 1:30 pm - 5:30 pm
Grand Ballroom IV
Instructors: Bruce Moylan (US Army) & Dave Kuntz (Sandia National Laboratories)

This course will investigate vehicle analysis, Integration and material state-of-the art codes and techniques and use actual test programs as demonstrations.

Interdisciplinary

Heat Transfer and Numerical Methods Course
Monday: 9:00 am - 12:00 pm
Grand Ballroom III
Instructor: Mike Chainyk (NASA-JPL)

This course will provide an overview of numerical thermal engineering, the finite element method, matrix method formalisms, and computer science implications involved in the construction of analysis codes for space science applications. The emphasis is on providing attendees with a broad and practical review of the numerical methods, implementation techniques, and supporting technology options utilized in the creation of any commercial toolset. Topics for discussion include the development of element and system matrices, the treatment of constraints and boundary conditions, view factor methods, radiation exchange matrix formalism, solution of nonlinear matrix systems, linear equation solvers, and exchange factors and Monte Carlo methods for real surface effects. Supporting topics will include discussions of conservation, precision and accuracy, large system performance, solution trade-offs, and nonlinear material characterization for conduction, IR surface exchange, solar load distribution, and spectral waveband analysis. The presenter will share nearly 25 years worth of lessons learned in the development of Commercial and R&TD finite element heat transfer codes.

Orbiter Thermal Control System (TCS) Lessons Learned Presentation (ITAR)
Thursday: 10:15 am - 12:00 am
Grand Ballroom IV
Instructor: Mark Flahaut (NASA-JSC)

Critical to all phases of flight, passive thermal analyses are essential as part of the proper design of the spacecraft to ensure its survival and the crew aboard her. Orbiter passive thermal responsibility has resided within the thermal branch of the Engineering Directorate’s Structures division at Johnson Space Center. Key personnel in the branch worked with dedicated contractor support from Rockwell International (now the Boeing Company) for all shuttle flights prior to STS-1 through the currently planned STS-135 mission to be launched during the summer of 2011. The group that does this passive thermal work is called Orbiter Thermal Control System Analysis. During flights, this group manned the consoles of the mission evaluation room (MER) 24 hours a day/7 days a week while each orbiter was has been in flight. Exhaustive analyses are conducted prior to and during each mission as events dictate.

A lessons learned document illustrating the gained collective wisdom of the Orbiter Thermal Control System Analysis group has been written. The document entitled Thermal Control Systems (TCS) Analysis Lessons Learned encompasses successes, setbacks and needed hardware changes by the TCS analysis problem resolution team (PRT).

Mr. Flahaut will present a briefing touching on the important lessons this group has learned over the 30 year shuttle program. The audience is restricted to U.S. citizens due to ITAR designation of the material covered.

Verification, Validation, & Uncertainty Analysis Session
Thursday: 8:00 am - 12:00 pm
Grand Ballroom V
Instructor: Deepak Bose (NASA-ARC)

This special session will focus on verification and validation and uncertainty analysis methods and will include examples associated with current challenges throughout the agency.

Note: This course will be broadcast live over the internet and/or recorded for future use in conference proceedings, courtesy of the NESC.

Design of Experiments (DoE) and Statistical Methods Course
Thursday: 1:30 pm - 5:30 pm
Grand Ballroom V
Instructor: Wayne Adams (Stat-Ease, Inc.)

Stat-Ease, Inc. provides statistical software, training, and consulting services for design of experiments (DOE). We produce the highly rated Design-Expert(R) DOE software package for finding breakthrough factors and optimization.

Examples will be presented showing methods for studying a process through iterative experiments. The topics will include: screening designs to reduce the number of factors, characterization designs to understand the interactions and detect curvature, response surface designs to find the optimal conditions. The purpose of this short course is to put all the designs together into the iterative design process rather than treating the design types as separate topics.

Note: This course will be broadcast live over the internet and/or recorded for future use in conference proceedings, courtesy of the NESC.

Thermo-Electric Cooler (TEC) Design Course
Friday: 8:00 am - 12:00 pm
Grand Ballroom IV
Instructor: Eric Grob (NASA-GSFC)

Based on principles developed in the 1800’s, the development of semiconductor materials since the 1950’s has enabled thermoelectric cooling to become an efficient means of heating and cooling. The characteristics of TECs make them highly suitable for precise temperature control applications where space limitations and reliability are paramount or where vapor-compression refrigeration is not desirable.

TECs are used in many industries, including military, medical, industrial, consumer, scientific/laboratory, and telecommunications. Applications range from extremely sophisticated temperature control systems in missiles and space vehicles, where they are used to cool low noise amplifiers (LNAs), star tracker CCDs, and IR (infrared) sensors, and lasers, to more common earth bound applications, such as biological and medical processing, high-powered circuit board cooling, and keeping your food and beverage of choice cold for an afternoon picnic.

This short course will review the principles of operation and provide an overview of design guidelines, along with a few example problems and real-life programs.

Software Training

Open Labs

CRTech Open Lab
Tuesday & Friday: 8:00 am - 12:00 pm
Blue Point Room II
Instructors: Douglas Bell & Mark Welch (CRTech)

Do you have a question about CRTech software? The CRTech Open Lab provides an opportunity for in-person customer support. Bring a model or bring a laptop (with the software already installed). If you cannot make one of the Open Lab sessions, feel free stop by our display booth.

MSC Patran Open Lab
Wednesday: 8:00 am - 12:00 pm
Blue Point Room III
Instructor: Shekhar Kanetkar (MSC)

Demos

ANSYS Demo
Monday: 8:30 am - 10:00 am
Grand Ballroom IV
Instructors: Reza Ghias & Jeff Burdick (ANSYS Inc.)

This course will contain the following segments:

• Product & Application Overview presentation: 30 minutes
• Demo of Workbench CFD simulation: 20 min
• Demo of Workbench Mechanical simulation: 20 min
• Demo of a Multiphysics Simulation: 20 min

CD-adapco Demo
Monday: 10:15 am - 12:00 pm
Grand Ballroom IV
Instructor: Mike Dombroski (CD-adapco)

CD-adapco will demonstrate rapid turnaround of thermal and fluid simulations using STAR-CCM+. This demonstration will showcase the productivity gains made available by state-of-the-art technology for taking complex configurations from CAD to solution. The unprecedented breadth of accurate applications made achievable by STAR-CCM+ will also be shown.

Data Parallel Line Relaxation (DPLR) Demo - Part 1
Monday: 1:30 pm - 5:30 pm
Grand Ballroom V
Instructor: Todd White (NASA-ARC)

This session will be an introduction to DPLR and will include a walk-through of the standard work-flow: pro-processing a point-matched planetary probe grid, running a 3D simulation, and post-processing and viewing the flow solution.

Data Parallel Line Relaxation (DPLR) Demo - Part 2
Tuesday: 1:30 pm - 5:30 pm
Grand Ballroom V
Instructor: Todd White (NASA-ARC)

This session will cover advanced usages of DPLR (time accuracy, using with overset grids, or complex surface boundary conditions). Discussion can be tailored based on participant feedback.

Matlab SimScape Demo
Tuesday: 10:15 am - 12:00 pm
Grand Ballroom V
Instructor: Terry Denery (The MathWorks)

Modeling Compressible Flow Systems in MATLAB & Simulink: This presentation will demonstrate a Finite Volume discretization modeling approach for Computational Fluid Dynamics problems. We will focus on simulating flow through a converging/diverging channel and analyze the transition from subsonic to supersonic flow. Mass, momentum, and energy flow between adjacent volumes are modeled using the Steger-Warming Flux Splitting approach. For an implicit solution method, it is necessary to solve a substantial set of algebraic equations simultaneously. The rich linear algebra and visualization capabilities of MATLAB make it an ideal environment for CFD problems. An alternate solution to the problem will be presented using the graphical modeling platform provided by Simulink and Simscape. This approach enables us to model not just the fluid dynamics aspect of the problem, but readily provides opportunity to simulate complete systems where embedded control software is employed.

Advanced Thermal Desktop Demo
Wednesday: 8:00 am - 10:00 am
Grand Ballroom V
Instructors: Douglas Bell & Mark Welch (CRTech)

This session will provide an overview of new and advanced features within the Thermal Desktop suite and provide demonstration on the use of some of those features. This session is recommended to anyone who wishes to see more advanced capabilities of the Thermal Desktop suite than can be addressed in the introductory session. Since the session is not hands-on, no prior experience with Thermal Desktop is required. Thermal Desktop is a design environment for generating thermal models with additional modules for performing radiation and heating environment calculations (RadCAD) and generating fluid flow circuits (FloCAD). Thermal Desktop is a graphical user interface for SINDA/FLUINT.

MSC Patran Demo
Wednesday: 1:30 pm - 3:30 pm
Grand Ballroom III
Instructor: Shekhar Kanetkar (MSC)

This session will detail MSC Thermal Tools for Spacecraft Thermal Design to include the following topics:

• Enhanced Patran
• Transparent Interface from Patran to Sinda to Thermica and back.
• Support of Aeroheating Loads i.e. Heat Flux as a function of time, space (not just x, y & z but parameters of curves) and Temperature
• 64 bit Sinda for running extremely large models
• Parallel Computing in Thermica
• Further enhanced GUI of Thermica

CRTech AeroTPS Demo
Wednesday: 3:45 pm - 5:30 pm
Grand Ballroom III
Instructor: Mark Welch (CRTech)

AeroTPS is a interface in Thermal Desktop(CRTech) that combines Thermal Desktop modeling with ATAC(ITT Industries, Huntsville AL). ATAC is a computer program that does simplified air flow calculations combined with CMA capabilities. The demo will comprise of the various modes of operations that can be performed in the package.

Thermal Workshop & Comet Demo
Thursday: 1:30 pm - 5:30 pm
Grand Ballroom III
Instructors: Douglas Bell (CRTech) & Malcolm Panthaki (Comet Solutions)

This session will provide demonstrations of the new capabilities of CRTech Thermal Workshop™ as well as the related Comet Multi-Physics product from Comet Solutions. CRTech Thermal Workshop™ provides the Thermal Desktop user with the ability to easily add thermal-specific model information to 3-D CAD geometry and to model complex parts and assemblies from multiple sources for analysis in Thermal Desktop/SINDA . It accelerates thermal engineering tasks through the use of simulation process templates which minimize tedious, manual data manipulation/re-entry/re-work/user errors including automated mesh generation and provides the ability to rapidly perform new thermal predictions as the design geometry changes. Thermal Workshop also provides the foundation for an upgrade path to the multi-disciplinary simulation process automation and work-in-process data management capabilities provided in Comet Multi-Physics. The Comet demonstration will focus on the application to spacecraft advanced electro-optical systems analysis involving automation of a design-integrated simulation process for Structural-Thermal-Optical Performance (STOP).

StatEase Demo
Friday: 8:00 am - 10:00 am
Grand Ballroom V
Instructor: Wayne Adams (Stat-Ease, Inc.)

Stat-Ease, Inc. provides statistical software, training, and consulting services for design of experiments (DOE). We produce the highly rated Design-Expert(R) DOE software package for finding breakthrough factors and optimization.

In the first half of this demonstration we will take a look at the new features in our latest release, version 8, of Design-Expert software. The second half is open for a two-way, free-form exchange of ideas. Bring a troublesome analysis problem, a question about advanced features, or even a list of features you would like to see added to future versions. This is your opportunity to learn and to share!

Hands-On Training

Intro to TSS v13.01 Hands-On Training
Monday: 8:30 am - 12:00 pm
Blue Point Room II
Instructor: Joe Lepore (Spacedesign Corporation)

This hands-on class will progress through a thermal analysis of a spacecraft, while demonstrating the new native- Windows GUI and many new features for improving productivity. The student will go through each major step in the analysis process using a simple example. This is the basic framework needed to create, analyze, and obtain temperatures using TSS. The spacecraft model will begin as an IGES file, which is moved into TSS by using the Transfer application. As each TSS application is used, the new v13 interface is introduced. The many user convenience enhancements that have been added, including a new SindaWin application for file and data management, will be demonstrated.

Intro to Thermal Desktop Hands-On Training
Monday: 1:30 pm - 5:30 pm
Blue Point Room II
Instructors: Douglas Bell & Mark Welch (CRTech)

This session provides an opportunity to use Thermal Desktop to build a model and solve the thermal solution. This session is recommended for those who are new to Thermal Desktop. Thermal Desktop is a design environment for generating thermal models with additional modules for performing radiation and heating environment calculations (RadCAD) and generating fluid flow circuits (FloCAD). Thermal Desktop is a graphical user interface for SINDA/FLUINT.

Thermal Analysis Results Processor (TARP) Hands-On Training
Tuesday: 8:00 am - 12:00 pm
Blue Point Room III
Instructor: Hume Peabody (Thermal Modeling Solutions)

TARP is a Windows based post processing program that creates an interface between the ASCII output from numerous thermal analysis solvers and Microsoft Excel. Users define the post processing objects within the TARP environment to create in the output Excel workbook, including: DataSets, Plots, Tables, etc. A user also has the ability to define further data points, such as group averages, maximums, and minimums. Lastly, a feature exists for the creation of a specialized workbook for the evaluation of nodal heatflows, which can be further extended to heatflows between the defined groups.

Maya NX Space Hands-On Training
Tuesday: 1:30 pm - 5:30 pm
Blue Point Room II
Instructor: Chris Blake (Maya Heat Transfer Technologies)

The Siemens NX Space Systems Thermal software is a space industry application leveraging the entire range of numerical capabilities found within the TMG thermal solver from MAYA (www.mayahtt.com). It provides a comprehensive set of tools to simulate orbital heating problems within the NX Advanced Simulation environment. As it is tightly integrated with CAD, the NX interface helps resolve thermal engineering challenges early in the design process within a concurrent engineering environment. Because of strong CAD-CAE associativity, design changes in CAD propagate to the analysis model, automatically updating meshes, loads, and boundary conditions. NX Space Systems Thermal is an indispensable tool for understanding the physics of orbital heat transfer for all space-bound as well as interplanetary-bound vehicles. It is ideal for modeling orbital vehicle applications with complex geometry.

The Siemens NX Flow software leverages the ESC computational fluid dynamics (CFD) solver from MAYA to accurately and efficiently simulate fluid flow phenomenon. It can be used to simulate various CFD phenomena of interest to the space community, notably the cooling of electronic equipment which can be addressed using NX Electronic Systems Cooling - a specialized product that couples together the thermal and flow solvers.

This workshop will feature hands-on tutorials for attendees to simulate a transient on-orbit spacecraft using NX Space Systems Thermal. Hands-on tutorials will also illustrate to attendees how to conduct coupled CFD and heat transfer analyses using NX Thermal/Flow.

Maya Finite Element Modeling And Postprocessing (FEMAP) Hands-On Training
Wednesday: 8:00 am - 12:00 pm
Blue Point Room II
Instructor: Chris Black (Maya Heat Transfer Technologies)

The Siemens Femap Thermal Advanced software is a space industry application leveraging the entire range of numerical capabilities found within the TMG solver from MAYA (www.mayahtt.com). It provides a comprehensive set of tools to simulate orbital heat transfer phenomena within the Femap environment. Siemens Femap Flow software leverages the ESC computational fluid dynamics (CFD) solver, also from MAYA. Combined with Femap-Thermal, it is an effective tool for simulating coupled heat-transfer and fluid flow phenomena. This workshop will provide hands-on tutorials for the attendees to simulate transient on-orbit articulated spacecraft using Femap Thermal Advanced, as well as coupled CFD and heat transfer within electronic systems using Femap Thermal/Flow.

CRTech Space Claim Hands-On Training
Wednesday: 1:30 pm - 5:30 pm
Blue Point Room II
Instructors: Douglas Bell & Mark Welch (CRTech)

This session provides an opportunity to try CRTech SpaceClaim®. CRTech SpaceClaim® enables Thermal Desktop users to import CAD parts and assemblies from virtually any CAD format (including STEP and IGES), simplify and heal the geometry, then send it to Thermal Desktop or to Thermal Workshop for meshing. New geometry can also be added using sketch-like Direct Modeling CAD technology, and the parts can be modified easily if the design changes.

ANSYS Hands-On Training
Wednesday: 1:30 pm - 5:30 pm
Blue Point Room III
Instructors: Reza Ghias & Jeff Burdick (ANSYS Inc.)

Engineers can chose one of three themes:

1. CFD
(a) Start with simple problem (subsonic, turbulence)
(b) Add more physics modeling capabilities (transitional flow)
(c) Parametric Study
(d) Optimization (with Mesh Morpher)


2. Mechanical
(a) Start with a linear problem
(b) Add more physics and solve non-linear problem
(c) Parametric Study
(d) Design Exploration


3. FSI
(a) Start with a high fidelity CFD+Mechanical simulation setup
(b) Setup and solve Fluid Structure Interaction problem

MSC Patran Hands-On Training
Thursday: 8:00 am - 12:00 pm
Blue Point Room III
Instructor: Shekhar Kanetkar (MSC)

This session will detail MSC Thermal Tools for Spacecraft Thermal Design to include the following topics:

• Enhanced Patran
• Transparent Interface from Patran to Sinda to Thermica and back.
• Support of Aeroheating Loads i.e. Heat Flux as a function of time, space (not just x, y & z but parameters of curves) and Temperature
• 64 bit Sinda for running extremely large models
• Parallel Computing in Thermica
• Further enhanced GUI of Thermica

Generalized Fluid System Simulation Program (GFSSP) Hands-On Training
Thursday: 1:30 pm - 5:30 pm
Blue Point Room II
Instructor: Alok Majumdar & Andre LeClair (NASA-MSFC)

GFSSP is a general-purpose computer program for analyzing steady state and time-dependent flowrate, pressure, temperature and concentrations in a complex flow network. The program is capable of modeling phase changes, compressibility, mixture thermodynamics, conjugate heat transfer, and fluid transient. GFSSP has been developed at Marshall Space Flight Center for flow analysis of Rocket Engine Turbopump and Propulsion System. This half-day course will teach the use of the Graphical User Interface to develop, run, and interpret the results of thermo-fluid system models. The course outline is as follows:

• Introduction
• Overview of Graphical User Interface (VTASC)
• Steady-state demo problem (Pumping Water Uphill)
• Tutorial on Compressible Flow (Converging-Diverging Nozzle)
• Overview of GFSSP’s Computational Physics for
• Conjugate Heat Transfer, and
• Fluid Transient
• Overview of Post-Processor (Winplot)
• Transient demo problem (Blowdown of Compressed Air Tank)
• Tutorial on Conjugate Heat Transfer (Chilldown of Cryogenic Transfer Line)
• Tutorial on Fluid Transient (Waterhammer)