The effect of gravity on cryogenic transfer line chilldown performance using pulse flow and low thermally conductive coatings

J Hartwig, JN Chung, S Darr, H Wang… - International Journal of …, 2023 - Elsevier
Future cryogenic propulsion systems will require efficient methods to chill down transfer
lines and propellant tanks prior to transfer of propellant while in space. When chilling down …

[HTML][HTML] Nitrogen flow boiling and chilldown experiments in microgravity using pulse flow and low-thermally conductive coatings

J Hartwig, JN Chung, J Dong, B Han, H Wang, S Darr… - npj …, 2022 - nature.com
The enabling of in-space cryogenic engines and cryogenic fuel depots for future manned
and robotic space exploration missions begins with technology development of advanced …

Enhancement and optimization of cryogenic metal tube chilldown heat transfer using thin-film coating, I. Effects of flow mass flux and coating layer thickness

H Wang, B Huang, J Dong, JN Chung… - … Communications in Heat …, 2024 - Elsevier
This paper is the first of a two-part series that presents experimental data and analysis on
the liquid nitrogen quenching heat transfer process of a stainless-steel tube with an inner …

Two distinctly different modes of cooling high-temperature bodies in subcooled liquids

VV Yagov, KB Minko, AR Zabirov - International Journal of Heat and Mass …, 2021 - Elsevier
The paper sequentially substantiates an existence of the two distinct modes of film boiling
during quenching the high-temperature bodies in subcooled liquids. Based on the vast …

Experiments and modeling on cryogenic quenching enhancement by the structured capillary-porous coatings of surface

IP Starodubtseva, DV Kuznetsov… - International Journal of …, 2021 - Elsevier
In the present study, the influence of structured capillary-porous coatings of surface on
cryogenic quenching by the falling liquid nitrogen film is investigated. The coating was …

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 …

[HTML][HTML] 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 study on fast quenching of cryogenic LN2 flow through interior micro-fin tube

L Wang, S Shangguan, J Wang, H Mao, Y Li… - International Journal of …, 2022 - Elsevier
Future cryogenic vehicle requires a fast propellant fueling as well as a rapid pipeline
quenching operation. In the present study, a novel interior micro-fin tube concept, with a …

An experimental study of quenching propagation along narrow rectangular channels

K Dong, S Ding, D Chen, D Wu, J Deng, H Liu… - … Communications in Heat …, 2022 - Elsevier
Plate-type fuel assembly is employed in the miniaturized nuclear reactor and submarine,
and it is essential to investigate the flow and heat transfer during reflooding for safety …