Status Report on the Throhput Transient Heat Pipe Modeling Code

Hall, Michael; Merrigan, Michael A.; Reid, Robert S.

doi:10.1063/1.2950294

Cited by 11 publications

(7 citation statements)

References 5 publications

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“…The axial pressure distribution was obtained from the 1-D momentum equation. [11][12][13]. The model count for melting from frozen and evaporation of lithium.…”

Section: Literature Review Of Porous Media Modelingmentioning

confidence: 99%

Understanding Melting and Freezing/Solidification and the Associated Effects on Heat Transfer

Ali

Wahlquist

Sabharwall

2021

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“…The axial pressure distribution was obtained from the 1-D momentum equation. [11][12][13]. The model count for melting from frozen and evaporation of lithium.…”

Section: Literature Review Of Porous Media Modelingmentioning

confidence: 99%

Understanding Melting and Freezing/Solidification and the Associated Effects on Heat Transfer

Ali

Wahlquist

Sabharwall

2021

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“…The aforementioned 2D models were quite successful and accurately predicted the frozen startup of low and high temperature heat pipes under various operating conditions by including both 2D free molecular and continuum vapor core regimes and freezing and melting phenomena by assuming flat liquid-vapor interface. Other frozen startup simulation efforts (Hall et al (1994) and Tournier and El-Genk (1996)) were made by assuming 1-D vapor flow regimes, while accounting for the local interfacial radius of the curvature of the liquid meniscus.…”

Section: Frozen Start Upmentioning

confidence: 99%

Heat Pipes: Review, Opportunities and Challenges

Faghri¹

2014

Frontiers in Heat Pipes

256

105

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A detailed overview of heat pipes is presented in this paper, including a historical perspective, principles of operations, types of heat pipes, heat pipe performance characteristics, heat pipe limitations, heat pipe frozen startup and shutdown, heat pipe analysis and simulations, and various applications of heat pipes. Over the last several decades, several factors have contributed to a major transformation in heat pipe science and technology . The first major contribution was the development and advances of new heat pipes, such as loop heat pipes, micro and miniature heat pipes, and pulsating heat pipes. In addition, there are now many new commercial applications that have helped contribute to the recent interest in heat pipes, especially related to the fields of electronic cooling and energy. For example, several million heat pipes are now manufactured each month since all modern laptops use heat pipes for CPU cooling. Numerical modeling, analysis, and experimental simulation of heat pipes have also significantly progressed due to a much greater understanding of various physical phenomena in heat pipes, as well as advances in computational and experimental methodologies.

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“…Further research into two areas yielded important information that made a significant impact on the modeling effort (Hall, Merrigan and Reid, 1994). First, research into experimental accommodation coefficient determination suggested that values closer to unity were appropriate for heat pipe conditions (Niknejad and Rose, 1981).…”

Section: Later Modifications To Throhputmentioning

confidence: 99%

Transient Thermohydraulic Heat Pipe Modeling: Incorporating throhput into the cæsar Environment

Hall¹

2003

AIP Conference Proceedings

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Abstract. The THROHPUT code, which models transient thermohydraulic heat pipe behavior, is being incorporated into the CBSAR computational physics development environment. The C~ESAR environment provides many beneficial features for enhanced model development, including levelized design, unit testing, Design by ContractTM (Meyer, 1997), and literate programming (Knuth, 1992), in a parallel, object-based manner. The original THROHPUT code was developed as a doctoral thesis research code; the current emphasis is on making a robust, verifiable, documented, component-based production package. Results from the original code are included. THE THROHPUT CODEHeat pipes are structures that transport heat by the evaporation and condensation of a working fluid, giving them a high effective thermal conductivity. Many space-based uses for heat pipes have been suggested, and high temperature heat pipes using liquid metals as working fluids are especially attractive for these purposes. These heat pipes are modeled by the THROHPUT code (THROHPUT is an acronym for Thermal Hydraulic Response Of Heat Pipes Under Transients and is pronounced the same as the word "throughput"). Summary Description of THROHPUTThe THROHPUT code provides a detailed model of the transient, thermohydraulic behavior of liquid metal heat pipes. Currently, it models homogeneous or composite wicks in a cylindrical heat pipe structure. The boundary conditions assumed are: a time-dependent heat input in the evaporator section, zero heat transfer at the outer wall in the adiabatic section, and radiative cooling to a specified ambient temperature in the condenser section. The user specifies the dimensions of the heat pipe and of the wick structure.

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Status Report on the Throhput Transient Heat Pipe Modeling Code

Cited by 11 publications

References 5 publications

Understanding Melting and Freezing/Solidification and the Associated Effects on Heat Transfer

Understanding Melting and Freezing/Solidification and the Associated Effects on Heat Transfer

Heat Pipes: Review, Opportunities and Challenges

Transient Thermohydraulic Heat Pipe Modeling: Incorporating throhput into the cæsar Environment

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