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Showing 1 to 20 of 46 for “"Conjugate heat transfer"”.
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Computational Investigation of Perforated Plate Film Cooling Utilizing Conjugate Heat Transfer
… and compared to NASA Glenn’s available Turbulent Heat Flux 4 experimental measurements collected as a part of the Transformational Tools and Technologies Project. A multiphysics approach to model heat conduction through the solid geometry is shown to offer significant improvements in wall …
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Validation of Conjugate Heat-Transfer Capability for Water- Cooled High-Speed Flows
<p>A FORTRAN conduction/convection heat transfer module named FOGO (meaning fire in Portuguese) has been developed to perform the conjugate heat transfer analyses with existing flow solvers. In this work, FOGO is coupled with TBD and WIND-US flow solvers. WIND-US is a well validated flow solver …
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Geometric Design Methods for Conducting Solids Cooled by Conjugate Heat Transfer Including Surface Radiation
… for conducting solids cooled by multimode heat transfer, including surface radiation. The goal is to determine solid shapes with reduced or minimal overall thermal resistances. The influence of radiation on the predicted optimal shapes and thermal performance is investigated.First, a …
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A cut-cell method for adaptive high-order discretizations of conjugate heat transfer problems
Heat transfer between a conductive solid and an adjacent convective fluid is prevalent in many aerospace systems. The ability to achieve accurate predictions of the coupled heat interaction is critical in advancing thermodynamic designs. Despite their growing use, coupled fluid-solid analyses known …
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Strongly-Coupled Conjugate Heat Transfer Investigation of Internal Cooling of Turbine Blades using the Immersed Boundary Method
The present thesis focuses on evaluating a conjugate heat transfer (CHT) simulation in a ribbed cooling passage with a fully developed flow assumption using LES with the immersed boundary method (IBM-LES-CHT). The IBM with the LES model (IBM-LES) and the IBM with CHT boundary condition (IBM-CHT) …
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Thermal Modeling of Lithium-Ion Energy Storage Systems for Hybrid Electric Vehicles Using Computational Fluid Dynamics with Conjugate Heat Transfer
… from powertrain simulation software, fundamental heat transfer principles, finite element analysis (FEA), and computational fluid dynamics (CFD) tools to predict the temperature distributions in battery modules.</p>
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Assessment of the Thermal Improvements Awarded by Horseshoe Vortex Elimination on a Turbine Stator Blade in Computational Fluid Dynamics and Conjugate Heat Transfer
… and the cost of the new blade. In addition, a conjugate heat transfer analysis is made on the interior of the blade, to evaluate the heat dissipation through internal cooling. The software tools used in the heat transfer analysis were MS Excel, DS Catia, Gambit, and Fluent. The blade is cooled …
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Inverse Boundary Element/genetic Algorithm Method For Reconstruction O
… with the reconstruction of multi-dimensional heat fluxes for film cooling applications. The motivation for this study is the characterization of complex thermal conditions in industrial applications such as those encountered in film cooled turbomachinery components. The heat conduction problem …
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Analysis of Flow and Heat Transfer in the U.S. EPR Heavy Reflector
… the core as well. The heavy reflector is heated due to absorption of the gamma radiation, and this heat is removed by the water flowing through 832 cooling channels drilled through the heavy reflector. In this project, the temperature distribution in the heavy reflector was investigated to …
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Coupling complex microchannel heat exchanger CFD with plug flow and Poiseuille flow models
Microchannel heat exchanger simulation provides a means to obtain design predictions at low cost and quick turnaround. Using computational fluid dynamics to solve the conjugate heat transfer problem, key output metrics such as overall pressure drop, heat exchanger effectiveness, and heat exchanger …
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Study of Cavity Geometry to Improve Optical Quality of Windows in Hypersonic Flow
… of optical quality of the system. The heat f lux into the system is simulated for various geometries (length-to-depth ratios). Computer-simulated flow fields and time-development of different measures of optical quality are produced using US3D. Conjugate heat transfer is used for …
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Study of Thermochemical Non-equilibrium and Sensor Cavity Geometry in Hypersonic Flow
… to perfect gas assumptions. Turbulent RANS and conjugate heat transfer were used to model three 3D geometries in US3D, an unstructured-grid finite volume computational fluid dynamics (CFD) solver. The three investigated geometries are a flat plate with a flush-mounted sensor, an open cavity with …
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Computational and Experimental Investigation of Supersonic Convection over a Laser Heated Target
… 81, 101, 120 Watts was used leading to a maximum heat flux between 1035 to 1910 <i>W/cm</i>². The target surface and backside temperature was measured using a mid-wave infrared camera. The backside temperature was also measured using eight type-K thermocouples. Two tests are made, one with the …
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Experimental and Computational Investigation of Ribbed Channels for Gas Turbine Thermal Management
… from a published article, and to analyze the CFD conjugate heat transfer by determining the turbulence model that best matched the published experimental values. Using those computational conditions and CFD results, an in house experimental rig was validated by comparing convective heat transfer …
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Geometric Effects of Thermal Barrier Coating Damage on Turbine Blade Temperatures
… needs can be made.</p> <p>A 2-D computational Conjugate Heat Transfer model was developed; fully resolving the hot gas path and TBC, bond-coat, and super alloy solids. The most sensitive driving parameters were identified to be the chip width and Mach number. In cases where the chip width …
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Computational Design of Microvascular Biomimetic Materials
… effect of the fluid, instead of solving the conjugate heat transfer problem for obtaining the temperature field in both solid and fluid domains. The Generalized Finite Element Method (GFEM) is adopted because accurate finite element approximations of the temperature field can be obtained on …
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Numerical analysis of a fin-tube plate heat exchanger with winglets
In this presented work, numerical analysis of heat transfer and flow characteristic using longitudinal vortex generators (LVGS) in fin and flat tube heat exchanger has been presented. Conjugate heat transfer 3D numerical model has been developed and successfully carried out. Rectangular winglets …
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Aerodynamic Heating of a Hypersonic Naval Projectile Launched At Sea Level
… the problem under study, and outside of the GASP Conjugate Heat Transfer module, Navier-Stokes code from Aerosoft, Inc., no efficient codes are available that can model the aerodynamic heating response for a fully detailed projectile, including all subassemblies, over an entire trajectory. …
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Thermal design and solutions for handling heat loads in high-speed connectors for data centers
… in Ansys Icepak Classic 2023 to simulate conjugate heat transfer within high-speed connector assemblies under realistic airflow and thermal conditions. The model accounted for conduction, convection, and fan-driven pressure differences corresponding to 3 inWC (≈ 746.5 Pa) system airflow. …
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