TY - JOUR

T1 - Computation of practical flow problems with release of latent heat

AU - Yamamoto, Satoru

N1 - Funding Information:
This work was partially supported by Grants-in-Aid for Scientific Research No. 12650154 from Japan Society for the Promotion Science. The author also wishes to acknowledge Tadashi Tanuma from Toshiba Corporation for his help in steam turbine calculations.

PY - 2005

Y1 - 2005

N2 - Practical flow problems with condensation due to phase change from water vapor to water liquid are numerically investigated. Fundamental equations solved in this study consist of conservation laws of mixed gas, water vapor, water liquid, and the number density of water droplets, coupled with the momentum equations and the energy equation. The classical condensation theory is employed for modeling homogeneous nucleation and nonequilibrium condensation. Heterogeneous nucleation is approximately modeled by assuming a constant radius and a constant number density of droplets. These equations are solved by a high-order high-resolution finite-difference method. As external flows, condensate transonic flows around NACA0012 airfoil in atmospheric flow conditions are calculated, and as internal flows, steady and unsteady transonic wet-steam flows through a steam turbine cascade channel are also calculated.

AB - Practical flow problems with condensation due to phase change from water vapor to water liquid are numerically investigated. Fundamental equations solved in this study consist of conservation laws of mixed gas, water vapor, water liquid, and the number density of water droplets, coupled with the momentum equations and the energy equation. The classical condensation theory is employed for modeling homogeneous nucleation and nonequilibrium condensation. Heterogeneous nucleation is approximately modeled by assuming a constant radius and a constant number density of droplets. These equations are solved by a high-order high-resolution finite-difference method. As external flows, condensate transonic flows around NACA0012 airfoil in atmospheric flow conditions are calculated, and as internal flows, steady and unsteady transonic wet-steam flows through a steam turbine cascade channel are also calculated.

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U2 - 10.1016/j.energy.2004.04.041

DO - 10.1016/j.energy.2004.04.041

M3 - Article

AN - SCOPUS:9444245926

VL - 30

SP - 197

EP - 208

JO - Energy

JF - Energy

SN - 0360-5442

IS - 2-4 SPEC. ISS.

ER -