TY - GEN
T1 - Impact of turbulence and compressibility modeling on three-dimensional cavitating flow computations
AU - Wu, Jiongyang
AU - Utturkar, Yogen
AU - Senocak, Inanc
AU - Shyy, Wei
AU - Arakere, Nagaraj
PY - 2003
Y1 - 2003
N2 - The large density ratio, up to 1000 in water, between liquid and vapor, turbulence with complicated interface dynamics and fast and multiple time scales make the computation of cavitating flows difficult. Utilizing a pressure-based algorithm extended for such flows, the present study focuses on the non-equilibrium and nonstationary aspects in the turbulence model, and the compressibility effects in the cavitation model. Assessment of several modeling concepts has been made in the context of the Favre-averaged Navier-Stokes equations, along with a transport equation-based cavitation model and the k-ε two-equation turbulence model. The three-dimensional turbulent cavitating flow in a hollow-jet valve is adopted as the physical focus. While the non-equilibrium and nonstationary modification to the turbulence closures do not seem to influence the qualitative characteristics of the simulation, the compressibility modeling can cause the result to vary substantially.
AB - The large density ratio, up to 1000 in water, between liquid and vapor, turbulence with complicated interface dynamics and fast and multiple time scales make the computation of cavitating flows difficult. Utilizing a pressure-based algorithm extended for such flows, the present study focuses on the non-equilibrium and nonstationary aspects in the turbulence model, and the compressibility effects in the cavitation model. Assessment of several modeling concepts has been made in the context of the Favre-averaged Navier-Stokes equations, along with a transport equation-based cavitation model and the k-ε two-equation turbulence model. The three-dimensional turbulent cavitating flow in a hollow-jet valve is adopted as the physical focus. While the non-equilibrium and nonstationary modification to the turbulence closures do not seem to influence the qualitative characteristics of the simulation, the compressibility modeling can cause the result to vary substantially.
UR - http://www.scopus.com/inward/record.url?scp=85087595123&partnerID=8YFLogxK
U2 - 10.2514/6.2003-4264
DO - 10.2514/6.2003-4264
M3 - Conference Paper published in a book
AN - SCOPUS:85087595123
SN - 9781624100956
T3 - 33rd AIAA Fluid Dynamics Conference and Exhibit
BT - 33rd AIAA Fluid Dynamics Conference and Exhibit
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 33rd AIAA Fluid Dynamics Conference and Exhibit 2003
Y2 - 23 June 2003 through 26 June 2003
ER -