Boiling and quenching heat transfer advancement by nanoscale surface modification

H Hu, C Xu, Y Zhao, KJ Ziegler, JN Chung - Scientific reports, 2017 - nature.com
All power production, refrigeration, and advanced electronic systems depend on efficient
heat transfer mechanisms for achieving high power density and best system efficiency …

Comparison of cryogenic flow boiling in liquid nitrogen and liquid hydrogen chilldown experiments

J Hartwig, H Hu, J Styborski, JN Chung - … Journal of Heat and Mass Transfer, 2015 - Elsevier
This paper presents a comparison between experimental results from recent liquid hydrogen
(LH 2) transfer line chilldown experiments at high Reynolds (Re) numbers versus liquid …

Assessment of existing two phase heat transfer coefficient and critical heat flux correlations for cryogenic flow boiling in pipe quenching experiments

J Hartwig, S Darr, A Asencio - International Journal of Heat and Mass …, 2016 - Elsevier
To enable efficient design and analysis of cryogenic propellant transfer systems, high
accuracy models are required for predicting two phase flow boiling and heat transfer at …

Transient cryogenic chill down process in horizontal and inclined pipes

J Johnson, SR Shine - Cryogenics, 2015 - Elsevier
Experimental results are presented that describe the parametric effects of inclination of
transfer line and mass flux on cryogenic chill down process. Experiments were performed in …

Investigation on heat transfer in line chill-down process with various cryogenic fluids

L Jin, J Lee, S Jeong - International Journal of Heat and Mass Transfer, 2020 - Elsevier
This paper focuses on the transient process of the pipe cooling by the internal flow of
cryogenic fluid, which is a so-called cryogenic line chill-down process. Due to the increasing …

Two-phase pipe quenching correlations for liquid nitrogen and liquid hydrogen

SR Darr, JW Hartwig, J Dong… - Journal of Heat …, 2019 - asmedigitalcollection.asme.org
Recently, two-phase cryogenic flow boiling data in liquid nitrogen (LN2) and liquid hydrogen
(LH2) were compared to the most popular two-phase correlations, as well as correlations …

Development of transient flow film boiling heat transfer correlations for energy efficient cryogenic fluid management during feed line quenching operation

KR Kunniyoor, P Ghosh - International Journal of Heat and Mass Transfer, 2023 - Elsevier
Currently, there is considerable interest in constitutive relations for accurate heat transfer
prediction during cryogenic feed line chill-down to optimize the cryogen requirement and …

An advance in transfer line chilldown heat transfer of cryogenic propellants in microgravity using microfilm coating for enabling deep space exploration

JN Chung, J Dong, H Wang, SR Darr, JW Hartwig - npj Microgravity, 2021 - nature.com
The extension of human space exploration from a low earth orbit to a high earth orbit, then to
Moon, Mars, and possibly asteroids is NASA's biggest challenge for the new millennium …

Development of constitutive relations for predicting film boiling crisis in bare and inner wall coated cryogenic tubes with a low-thermal conductive layer for heat transfer …

KR Kunniyoor, V Kunniyoor, P Ghosh - … Journal of Heat and Mass Transfer, 2024 - Elsevier
Closure models for transient cryogenic quench flow boiling heat transfer prediction are
finding significant attention to support the design of energy-efficient, cost-effective, and …

Experimental investigation on cryogenic chilldown performance under high-Reynolds number condition and using interior micro-fin structure

L Wang, J Wang, X Huang, S Shangguan… - International Journal of …, 2022 - Elsevier
Future aerospace vehicle requires a fast propellant fueling and a rapid launching. In the
present study, a high-pressure chilldown test platform is established, and two different tube …