**Commenced**in January 2007

**Frequency:**Monthly

**Edition:**International

**Paper Count:**3

# gravitational force Related Publications

##### 3 A Two-Phase Flow Interface Tracking Algorithm Using a Fully Coupled Pressure-Based Finite Volume Method

**Authors:**
Shidvash Vakilipour,
Scott Ormiston,
Masoud Mohammadi,
Rouzbeh Riazi,
Kimia Amiri,
Sahar Barati

**Abstract:**

**Keywords:**
two-phase flow,
coupled solver,
gravitational force,
interface tracking,
Reynolds number to Froude number

##### 2 A Meta-Heuristic Algorithm for Set Covering Problem Based on Gravity

**Authors:**
S. Raja Balachandar,
K. Kannan

**Abstract:**

A new Meta heuristic approach called "Randomized gravitational emulation search algorithm (RGES)" for solving large size set covering problems has been designed. This algorithm is found upon introducing randomization concept along with the two of the four primary parameters -velocity- and -gravity- in physics. A new heuristic operator is introduced in the domain of RGES to maintain feasibility specifically for the set covering problem to yield best solutions. The performance of this algorithm has been evaluated on a large set of benchmark problems from OR-library. Computational results showed that the randomized gravitational emulation search algorithm - based heuristic is capable of producing high quality solutions. The performance of this heuristic when compared with other existing heuristic algorithms is found to be excellent in terms of solution quality.

**Keywords:**
combinatorial optimization,
velocity,
set covering problem,
gravitational force,
Newton's Law,
Meta Heuristic

##### 1 A Meta-Heuristic Algorithm for Vertex Covering Problem Based on Gravity

**Authors:**
S. Raja Balachandar,
K.Kannan

**Abstract:**

A new Meta heuristic approach called "Randomized gravitational emulation search algorithm (RGES)" for solving vertex covering problems has been designed. This algorithm is found upon introducing randomization concept along with the two of the four primary parameters -velocity- and -gravity- in physics. A new heuristic operator is introduced in the domain of RGES to maintain feasibility specifically for the vertex covering problem to yield best solutions. The performance of this algorithm has been evaluated on a large set of benchmark problems from OR-library. Computational results showed that the randomized gravitational emulation search algorithm - based heuristic is capable of producing high quality solutions. The performance of this heuristic when compared with other existing heuristic algorithms is found to be excellent in terms of solution quality.

**Keywords:**
combinatorial optimization,
velocity,
gravitational force,
Vertex covering Problem,
Newton's Law,
Meta Heuristic