Publications

RadCAD

Non-Grey and Temperature Dependent Radiation Analysis Methods, T. Panczak (TFAWS Short Course 2005)

Highlights in thermal engineering at Carlo Gavazzi Space (17th Workshop on Thermal and ECLS Software-ESTEC 2003)

Integrating Thermal And Structural Analysis using Thermal Desktop (ICES 1999)

A CAD-based Tool for FDM and FEM Radiation and Conduction Modeling (ICES 1998)

Customizable Multidiscipline Environments for Heat Transfer and Fluid Flow Modeling (ICES 2004)

Automated Determination of Worst-case Design Scenarios (ICES 2003)

Ground Plane and Near-Surface Thermal Analysis for NASA’s Constellation Programs, Joseph F. Gasbarre, Ruth M. Amundsen, Salvatore Scola - NASA Langley Research Center, Frank B. Leahy and John R. Sharp - NASA Marshall Space Flight Center (TFAWS 2008)

Non-grey Radiation Modeling using Thermal Desktop/SINDAWORKS, Dr. Kevin R. Anderson, Dr. Chris Paine, Jet Propulsion Laboratory(TFAWS 2006)

Emittance & Absorptance for Cryo Testing, D. Green (2005)

FloCAD

CAD-based Methods for Thermal Modeling of Coolant Loops and Heat Pipes (ITherm 2002)

Nonlinear Programming Applied to Thermal and Fluid Design Optimization (ITherm 2002)

Upper Stage Tank Thermodynamic Modeling Using SINDA/FLUINT, P. Schallhorn (TFAWS 2007)

Modeling Two-Phase Loops with Several Capillary Evaporators, D. Khrustalev, K. Wrenn, D. Wolf (TFAWS 2006)

e-Thermal: Automobile Air-Conditioning Module, G. Anand et al,

e-Thermal: A Vehicle-Level HVAC/PTC Simulation Tool (T. Tumas et al)

The Design and Performance of a Water Cooling System for a Prototype Coupled Cavity linear Particle Accelerator for the Spallation Neutron Source (ASME-JSME 2003)

Adding Heat Pipes and Coolant Loop Models to Finite Element and/or Finite difference Thermal/Structural Models (ICES 2003)

Refrigeration System Design and Analysis (ITherm 2002)

Control Volume Interfaces: A Unique Tool for a Generalized Fluid Network Modeler (AIAA Thermophysics 2000)

Thermal Desktop

The Finite Element Method and Thermal Desktop

Stratified tank and splash modeling using SINDA/FLUINT, Thermal Desktop, FloCAD

The Design and Performance of a Water Cooling System for a Prototype Coupled Cavity linear Particle Accelerator for the Spallation Neutron Source (ASME-JSME 2003)

Adding Heat Pipes and Coolant Loop Models to Finite Element and/or Finite difference Thermal/Structural Models (ICES 2003)

Thermo-electrochemical analysis of lithium ion batteries for space applications using Thermal Desktop, W. Walker, H. Ardebili (2014)

Thermal Modeling of Nanosat, Dai Q. Dinh (2012)

Improvements to a Response Surface Thermal Model for Orion, Stephen W. Miller – NASA JSC William Q. Walker – West Texas A&M(2011)

FASTSAT-HSV01 Thermal Math Model Correlation, Callie McKelvey, NASA Marshall Space Flight Center(2011)

Adaptive Thermal Modeling Architecture for Small Satellite Applications, 2Lt. John Anger Richmond, USAF, Colonel John Keesee, USAF Retired (2010)

Collaborative design and analysis of Electro-Optical sensors, Jason Geis, Jeff Lang, Leslie Peterson, Francisco Roybal, David Thomas(2009)

Crew Exploration Vehicle Composite Pressure Vessel Thermal Assessment, Laurie Y. Carrillo, Ángel R. Álvarez-Hernández, Steven L. Rickman - NASA Johnson Space Center(TFAWS 2008)

Associated paper can be download here

Ground Plane and Near-Surface Thermal Analysis for NASA’s Constellation Programs, Joseph F. Gasbarre, Ruth M. Amundsen, Salvatore Scola - NASA Langley Research Center, Frank B. Leahy and John R. Sharp - NASA Marshall Space Flight Center (TFAWS 2008)

Thermal Model Development for Ares I-X, Ruth M. Amundsen, Joe Del Corso - NASA Langley Research Center (TFAWS 2008)

ATROMOS Mars Polar Lander Thermal Model, Elsie Hartman, Hingloi Leung, Freddy Ngo, Syed Shah, Nelson Fernandez, Kenny Boronowsky, Ramon Martinez, Nick Pham, Ed Iskander, Marcus Murbach, Erin Tegnerud, Dr. Periklis Papadopoulos (TFAWS 2008)

Free Molecular Heat Transfer Programs for Setup and Dynamic Updating the Conductors in Thermal Desktop, Eric T. Malroy, Johnson Space Center (TFAWS 2007)

Thermal Analysis on Plume Heating of the Main Engine on the Crew Exploration Vehicle Service Module, Xiao-Yen J. Wang and James R.Yuko, NASA Glenn Research Center (TFAWS 2007)

Modeling Transient Operation of Loop Heat Pipes using Thermal Desktop, Dmitry Khrustalev, ATK Space(TFAWS 2007)

WPI Nanosat-3 Final Report, PANSAT - Powder Metallurgy and Navigation Satellite, , Fred J Looft, Electrical and Computer Engineering, Worcester Polytechnic Institute (2006)

Modeling and Sizing a Thermoelectric Cooler within a Thermal Analyzer, J. Baumann (Aerospace Thermal Control Workshop 2006)

Non-grey Radiation Modeling using Thermal Desktop/SINDAWORKS, Dr. Kevin R. Anderson, Dr. Chris Paine, Jet Propulsion Laboratory(TFAWS 2006)

Analysis and Design of the Mechanical Systems Onboard a Microsatellite in Low-Earth Orbit: an Assessment Study, Dylan Raymond Solomon (2005)

Thermo-elastic wavefront and polarization error analysis of a telecommunication optical circulator, K. Doyle and B. Bell (2005)

Emittance & Absorptance for Cryo Testing, D. Green (2005)

JWST Testing Issues – Thermal & Structural (William Bell, Frank Kudirka, & Paul-W. Young, Aerospace Thermal Control Workshop 2005)

Thermoelastic Analysis in Design (William Bell & Paul-W. Young, Aerospace Thermal Control Workshop 2005)

Parametric Models and Optimization for Rapid Thermal Design, D. Martin (2004)

Margin Determination in the Design and Development of a
Thermal Control System (D. Thunnissen and G. Tsuyuki, ICES 2004)

Automated Multidisciplinary Optimization of a Space-based Telescope (ICES 2002)

Integrated Analysis of Thermal/Structural/
Optical Systems (ICES 2002)

A CAD-based Tool for FDM and FEM Radiation and Conduction Modeling

SINDA/FLUINT

Modeling Two-Phase Loops with Several Capillary Evaporators, D. Khrustalev, K. Wrenn, D. Wolf (TFAWS 2006)

Analysis and Test Verification of Transitional Flow in a Dewar Vent, R. Schweickart and G. Mills (2005)

e-Thermal: Automobile Air-Conditioning Module, G. Anand et al,

e-Thermal: A Vehicle-Level HVAC/PTC Simulation Tool (T. Tumas et al)

The Design and Performance of a Water Cooling System for a Prototype Coupled Cavity linear Particle Accelerator for the Spallation Neutron Source (ASME-JSME 2003)

Refrigeration System Design and Analysis (ITherm 2002)

Design and Transient Simulation of Vehicle Air Conditioning Systems (VTMS Conference, 2001)

Steady State and Transient Loop Heat Pipe Modeling (ICES 2000)

Nonlinear Programming Applied to Calibrating Thermal and Fluid Models to Test Data (Semi-Therm 2002)

Sinaps

Vapor Compression Cycle Air Conditioning: Design and Transient Simulation (CRTech White Paper)

A Methodology for Enveloping Reliable Start-up of LHPs (AIAA Thermophysics 2000)

Steady State and Transient Loop Heat Pipe Modeling (ICES 2000)

Thermohydraulic Solutions for Thermal Control, Propulsion, Fire Suppression, and Environmental Control Systems (ICES 1999)

dispersed vs. coalesced front

Tuesday, June 26, 2018, 1-2pm PT, 4-5pm ET

This webinar describes flat-front modeling, including where it is useful and how it works. A flat-front assumption is a specialized two-phase flow method that is particularly useful in the priming (filling or re-filling with liquid) of gas-filled or evacuated lines. It also finds use in simulating the gas purging of liquid-filled lines, and in modeling vertical large-diameter piping.

Prerequisites: It is helpful to have a background in two-phase flow, and to have some previous experience with FloCAD Pipes.

Register here for this webinar

FloCAD model of a loop heat pipe

Since a significant portion of LHPs consists of simple tubing, they are more flexible and easier to integrate into thermal structures than their traditional linear cousins: constant conductance and variable conductance heat pipes (CCHPs, VCHPs). LHPs are also less constrained by orientation and able to transport more power. LHPs have been used successfully in many applications, and have become a proven tool for spacecraft thermal control systems.

However, LHPs are not simple, neither in the details of their evaporator and compensation chamber (CC) structures nor in their surprising range of behaviors. Furthermore, there are uncertainties in their performance that must be treated with safety factors and bracketing methods for design verification.

Fortunately, some of the authors of CRTech fluid analysis tools also happened to have been involved in the early days of LHP technology development, so it is no accident that Thermal Desktop ("TD") and FloCAD have the unique capabilities necessary to model LHPs. Some features are useful at a system level analysis (including preliminary design), and others are necessary to achieve a detailed level of simulation (transients, off-design, condenser gradients).

CRTech is offering a four-part webinar series on LHPs and approaches to modeling them. Each webinar is designed to be attended in the order they were presented. While the first webinar presumes little knowledge of LHPs or their analysis, for the last three webinars you are presumed to have a basic knowledge TD/FloCAD two-phase modeling.

Part 1 provides an overview of LHP operation and unique characteristics
Part 2 introduces system-level modeling of LHPs using TD/FloCAD.
Part 3 covers an important aspect of getting the right answers: back-conduction and core state variability.
Part 4 covers detailed modeling of LHPs in TD/FloCAD such that transient operations such as start-up, gravity assist, and thermostatic control can be simulated.