Difference between Lagrangian and Eulerian Approach
Comparison between Lagrangian and Eulerian Method
- In a fluid motion, each fluid particle has its velocity and acceleration at any point in time.
- Velocity and acceleration of a particle may change with time or position.
- Two methods are used in the fluid motion
- Langrangian Method
- Eulerian Method
|Langrangian Method||Eulerian Method|
|An observer concentrates on the movement of a single fluid particle.||An observer concentrates on the fixed point particles.|
|An observer has to move with the fluid particle to observe its movement.||An observer remains stationary and observes changes in the fluid parameters at the fixed point only.|
|An observer remains stationary and observes changes in the fluid parameters at the fixed point only.||The method describes the overall flow characteristics at various points as fluid particles pass.|
|Not commonly used.||Commonly used.|
What is the Lagrangian approach?
- Langrangian method, the observer follows a single fluid particle during its motion and will observe the change in its properties like velocity, acceleration, density, etc
What is the Eulerian approach?
- Eulerian method, the observer concentrates on a fixed point or a region and will observe the change in velocity, acceleration, density, etc. at that point only.
What is Eulerian approach?What is Eulerian approach?