@Article{hmt.6.1,
AUTHOR = {J. N. Chung, Kun Yuan},
TITLE = {RECENT PROGRESS ON EXPERIMENTAL RESEARCH OF  CRYOGENIC TRANSPORT LINE CHILLDOWN PROCESS},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {6},
YEAR = {2015},
NUMBER = {1},
PAGES = {1--7},
URL = {http://www.techscience.com/fhmt/v6n1/54700},
ISSN = {2151-8629},
ABSTRACT = {Chilldown or quenching is a complicated process that initiates the cryogenic fluid line transport, and it involves unsteady two-phase heat and mass 
transfer. To advance our understanding of this process, we have reviewed recent experimental investigations. The chilldown process can be generally 
divided into three regimes: film boiling, transition boiling and nucleate boiling, and each regime is associated with a different flow pattern and heat 
transfer mechanism. Under low flow rate conditions, it is concluded that the two-phase flow regime is dispersed flow in the film boiling regime. The 
dispersed liquid phase is in the form of long filaments as the transport line is chilled down, and the vapor phase is generally superheated. 
Microgravity experiment for line chilldown was conducted basically in the film boiling region. Bottom wall heat flux was found to decrease under 
microgravity condition. Under the experimental condition, the gravity effect does not show a strong dependence on wall temperature and inlet flow 
rate.},
DOI = {10.5098/hmt.6.1}
}