RT Journal Article
ID 7915ea7c6381f9f8
A1 Shome, Biswadip
T1 MONTE CARLO BASED UNCERTAINTY ANALYSIS FOR VARIABLE PROPERTY MIXED CONVECTION FLOW IN A UNIFORMLY HEATED CIRCULAR TUBE
JF International Journal for Uncertainty Quantification
JO IJUQ
YR 2016
FD 2016-12-16
VO 6
IS 5
SP 417
OP 428
K1 Monte Carlo
K1 uncertainties
K1 variable property
K1 mixed convection
AB A Monte Carlo based stochastic numerical analysis of simultaneously developing mixed convection laminar flow and heat transfer with variable properties in a uniformly heated circular tube was carried out. The Monte Carlo simulations were performed for heating of a large Prandtl number liquid for a wide range of Prandtl numbers (50 ≤ Pr ≤ 1000), Rayleigh numbers (105 ≤ Ra ≤ 107), and nondimensional heat flux values (100 ≤ qwd/k ≤ 1000). The results show that the effect of uncertainties in the properties is greater on the friction factors uncertainty than it is on the Nusselt numbers uncertainty, and the uncertainty of the predicted friction factors and Nusselt numbers increases with increasing free convection and entrance effects. The maximum uncertainties in the predicted friction factors and Nusselt numbers were around 7.5% and 3.3%, respectively, for a 10% uncertainty value in the fluid properties. The uncertainties in the friction factors and Nusselt numbers were found to increase approximately linearly with increasing fluid property uncertainties.
PB Begell House
LK https://www.dl.begellhouse.com/journals/52034eb04b657aea,4389a1c13f4fb473,7915ea7c6381f9f8.html