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In continuum mechanics, the material derivative describes the time rate of change of some physical quantity (like heat or momentum) of a material element that is subjected to a space-and-time-dependent macroscopic velocity field. The material derivative can serve as a link between Eulerian and Lagrangian descriptions of continuum deformation.
Definition, Development & Orthogonal coordinates
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derivative displaystyle mathbf temperature field material case time fluid velocity vector partial cdot nabla scalar change example frac term varphi
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| temperature or chemical concentration | instance of | Here φ may be some physical variable | 0.80 | text |
| Material derivative | related to Definition | The | 0.60 | section |
| Material derivative | related to Definition | Generally | 0.60 | section |
| Material derivative | related to Definition | Only | 0.60 | section |
| Material derivative | related to Definition | Confusingly | 0.60 | section |
| Material derivative | related to Orthogonal coordinates | It | 0.60 | section |
| Material derivative | related to Other names | There | 0.60 | section |
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