scholarly journals Numerical solution of two-dimensional ablation problems using the finite control volume method with unstructured grids

1994 ◽  
Author(s):  
R. Hogan ◽  
B. Blackwell ◽  
R. Cochran
Keyword(s):  
Numerical Solution ◽  
Unstructured Grids ◽  
Control Volume ◽  
Two Dimensional ◽  
Control Volume Method ◽  
Finite Control ◽  
Volume Method

Basic Boundary Conditions for Incompressible and Compressible Flows Using Unstructured Meshes

2003 ◽  
Author(s):  
Branislav Basara
Keyword(s):  
Convergence Rate ◽  
Boundary Conditions ◽  
Compressible Flows ◽  
Unstructured Grids ◽  
Control Volume ◽  
Unstructured Meshes ◽  
Control Volume Method ◽  
Polyhedral Cells ◽  
Volume Method ◽  
Basic Boundary

The paper compiles the basic and frequently used boundary conditions in CFD calculations. Regardless of the type of boundary conditions, Dirichlet or Neumman, there are very important differences in the implementation procedure depending on the solved equations as well as on variables which are updated on the boundaries. Boundary conditions in the frame of the control volume method presented here, are adopted for the unstructured grids consisting of arbitrary polyhedral cells. There are no limitations on the employment of boundary conditions regarding mesh type. Some special treatments to improve results and the convergence rate are proposed. The emphasis is on the wall and the pressure boundaries.

Numerical Simulation of Fluid Flow and Heat Transfer in the Micro-Nozzle

2005 ◽  
Author(s):  
Longjian Li ◽  
Yihua Zhang ◽  
Wenzhi Cui ◽  
Tien-Chien Jen ◽  
Qinghua Chen ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Control Volume ◽  
Slip Model ◽  
Control Volume Method ◽  
Propulsion Performance ◽  
Micro Nozzle ◽  
Flow And Heat Transfer ◽  
Finite Control ◽  
Mems Technology ◽  
Volume Method

Micro-nozzle, based on the MEMS technology, has played an important role in orbit positioning, attitude adjusting and other applications of micro-satellites. The continuous no-slip model of two-dimensional compressible laminar flow in the micro-nozzle was proposed and solved numerically by finite control volume method. The flow and heat transfer in the micro-nozzle were computed under different conditions, including different inlet pressures, different inlet temperatures and different divergent angles. Flow field and effects of these conditions on the propulsion performance were analyzed. Finally, simulated solutions were compared and validated with the experimental results.

Numerical Solution of Richards' Equation With Control Volume Method

2004 ◽  
Vol 15 (4-5) ◽  
pp. 291-308
Author(s):  
George K. Arampatzis, ◽  
Christos D. Tzimopoulos, ◽  
Christos Η. Evangelides,
Keyword(s):  
Numerical Solution ◽  
Control Volume ◽  
Richards Equation ◽  
Control Volume Method ◽  
Volume Method
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