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The fluid is subdivided into fluid parcels and every fluid parcel is followed as it moves through space and time. Which kind of formulation is this?

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The fluid is subdivided into fluid parcels and every fluid parcel is followed as it moves through space and time. Which kind of formulation is this?

(a) Cartesian

(b) Eulerian

(c) Lagrangian

(d) Euclidian

I had been asked this question in examination.

Enquiry is from Governing Equations topic in division Governing Equations of Fluid Dynamics of Computational Fluid Dynamics

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Right option is (c) Lagrangian

The explanation: In Lagrangian fluid flow specification, the fluid is subdivided into many parts and each of this part is followed. These parts are called fluid parcels.

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