Research output: Contribution to journal › Conference article › peer-review
CFD simulation of pressure and discharge surge in Francis turbine at off-design conditions. / Chirkov, D.; Avdyushenko, A.; Panov, L.; Bannikov, D.; Cherny, S.; Skorospelov, V.; Pylev, I.
In: IOP Conference Series: Earth and Environmental Science , Vol. 15, No. PART 3, 032038, 01.12.2012.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - CFD simulation of pressure and discharge surge in Francis turbine at off-design conditions
AU - Chirkov, D.
AU - Avdyushenko, A.
AU - Panov, L.
AU - Bannikov, D.
AU - Cherny, S.
AU - Skorospelov, V.
AU - Pylev, I.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - A hybrid 1D-3D CFD model is developed for the numerical simulation of pressure and discharge surge in hydraulic power plants. The most essential part-the turbine itself-is simulated directly using 3D unsteady equations of turbulent motion of fluid-vapor mixture, while the rest of the hydraulic system is simulated in frames of 1D hydro-acoustic model. Thus the model accounts for the main factors responsible for excitation and propagation of pressure and discharge waves in hydraulic power plant. Boundary conditions at penstock inlet and draft tube outlet are discussed in detail. Then simulations of dynamic behavior at part load and full load operating points are performed. It is shown that the numerical model is able to capture self-excited oscillations in full load conditions. The influence of penstock length and flow structure behind the runner are investigated. The presented approach seems to be a promising tool for prediction and investigation the dynamic behavior in hydraulic power plants.
AB - A hybrid 1D-3D CFD model is developed for the numerical simulation of pressure and discharge surge in hydraulic power plants. The most essential part-the turbine itself-is simulated directly using 3D unsteady equations of turbulent motion of fluid-vapor mixture, while the rest of the hydraulic system is simulated in frames of 1D hydro-acoustic model. Thus the model accounts for the main factors responsible for excitation and propagation of pressure and discharge waves in hydraulic power plant. Boundary conditions at penstock inlet and draft tube outlet are discussed in detail. Then simulations of dynamic behavior at part load and full load operating points are performed. It is shown that the numerical model is able to capture self-excited oscillations in full load conditions. The influence of penstock length and flow structure behind the runner are investigated. The presented approach seems to be a promising tool for prediction and investigation the dynamic behavior in hydraulic power plants.
UR - http://www.scopus.com/inward/record.url?scp=84874035355&partnerID=8YFLogxK
U2 - 10.1088/1755-1315/15/3/032038
DO - 10.1088/1755-1315/15/3/032038
M3 - Conference article
AN - SCOPUS:84874035355
VL - 15
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - PART 3
M1 - 032038
T2 - 26th IAHR Symposium on Hydraulic Machinery and Systems
Y2 - 19 August 2012 through 23 August 2012
ER -
ID: 49889772