scholarly journals Helioseismological determination of the subsurface spatial spectrum of solar convection: Demonstration using numerical simulations

2021 ◽  
Author(s):  
V. G. A. Böning ◽  
A. C. Birch ◽  
L. Gizon ◽  
T. L. Duvall
Keyword(s):  
Numerical Simulations ◽  
Spatial Spectrum ◽  
Solar Convection

scholarly journals Toward understanding the multiscale spatial spectrum of solar convection

2012 ◽  
Vol 8 (S294) ◽  
pp. 361-363
Author(s):  
A. V. Getling ◽  
O. S. Mazhorova ◽  
O. V. Shcheritsa
Keyword(s):  
Convective Instability ◽  
Convective Flow ◽  
Large Scale ◽  
Fluid Layer ◽  
Boussinesq Equations ◽  
Spatial Spectrum ◽  
Small Scale ◽  
Two Dimensional ◽  
Solar Convection

AbstractConvection is simulated numerically based on two-dimensional Boussinesq equations for a fluid layer with a specially chosen stratification such that the convective instability is much stronger in a thin subsurface sublayer than in the remaining part of the layer. The developing convective flow has a small-scale component superposed onto a basic large-scale roll flow.

scholarly journals Determination of braking force on the aerodynamic brake by numerical simulations

2014 ◽  
Vol 42 (2) ◽  
pp. 106-111 ◽  
Author(s):  
Mirjana Puharic ◽  
Dusan Matic ◽  
Suzana Linic ◽  
Slavica Ristic ◽  
Vojkan Lucanin
Keyword(s):  
Numerical Simulations ◽  
Braking Force ◽  
Aerodynamic Brake

Numerical Simulation of Offshore Pipeline Installation by Lateral Deflection Procedure

2007 ◽  
Author(s):  
Danilo Machado Lawinscky da Silva ◽  
Rodrigo Almeida Bahiense ◽  
Breno Pinheriro Jacob ◽  
Fernando Gomes da Silva Torres ◽  
Antonio Roberto Medeiros ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Computational Tool ◽  
Lateral Deflection ◽  
Correct Definition ◽  
Offshore Pipeline ◽  
Definition Of

Conventional offshore pipeline installation operations in Brazil have been performed in an S-Lay procedure employing the BGL-1 barge, owned by Petrobras. However, this procedure has some limits, and may not be feasible in some particular scenarios. Therefore, the objective of this work is to present the numerical simulation of an alternative pipeline installation procedure. This procedure basically consists of performing the pipeline assembly on shore, and deflecting it to the sea using a tug boat. The numerical simulations employ the SITUA-Prosim computational tool, which is able to incorporate the correct definition of the seabed and shore from bathymetric curves. An actual pipeline installation by this lateral deflection procedure is analyzed and discussed. The characterization of the procedure passes through the determination of the better velocity and direction of the tug boat in order to minimize the efforts on the pipeline (especially due to the curvatures).

Determination of the laminar-turbulent transition location in numerical simulations of subsonic and transonic flows past a flat plate

2019 ◽  
Vol 26 (5) ◽  
pp. 629-637 ◽  
Author(s):  
A. V. Boiko ◽  
K. V. Demyanko ◽  
A. A. Inozemtsev ◽  
S. V. Kirilovskiy ◽  
Yu. M. Nechepurenko ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Flat Plate ◽  
Transonic Flows ◽  
Turbulent Transition ◽  
Transition Location ◽  
Laminar Turbulent Transition
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