Open AccessNumerical Comparison of Thermal Stratification due Natural Convection in Densified LOX and LN2 Tanks
Author(s) -
Seyed Ali Jazayeri,
Ehsan Molla Hasanzadeh Khoei
Publication year - 2008
Publication title -
american journal of applied sciences
Language(s) - English
Resource type - Journals
eISSN - 1554-3641
pISSN - 1546-9239
DOI - 10.3844/ajassp.2008.1773.1779
Subject(s) - thermal stratification , natural convection , stratification (seeds) , thermal , materials science , mechanics , convection , engineering , geology , structural engineering , meteorology , physics , turbulence , seed dormancy , germination , botany , dormancy , biology
The growth of natural circulation and thermal stratification inside LOX, LN2 storage tanks due to heat transfer from surroundings is investigated using a non-equilibrium, two-domain, mathematical model. The two-dimensional model is considered for the liquid domain in two cases and a lumped, thermodynamic model is utilized for vapor domain. The vapor is assumed to behave like an ideal gas. The developed mathematical model for liquid domain consists of conservation of mass, momentum, energy equations with Boussinesq approximation. The coupling of two domains is carried out using energy balance at the interface. An implicit, finite-volume technique with a uniform mesh for liquid domain is used to predict the velocity and temperature fields