Writing w^2 in Index Notation for Derivation with del X u

In summary, curl with index notation is a mathematical operation used in vector calculus to calculate the rotation or circulation of a vector field. It differs from traditional curl in its representation and is more efficient for calculations. The Levi-Civita symbol plays a crucial role in this operation, and it can be extended to higher dimensions. Some applications of curl with index notation include fluid dynamics, electromagnetism, and continuum mechanics.
  • #1
davcrai
13
0

Homework Statement


I need to write w^2 in suffix notation for a derivation I am doing, where w = del X u


Homework Equations



(del X u) = w

The Attempt at a Solution



I think it is Eijk(d^2uk/dxj)

where d is the partial derivative, E is the epsilon operator and ijk are suffix's, is this correct?
 
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  • #2
By w^2 do you mean [itex]w \cdot w[/itex]? What is [itex]\nabla \times u[/itex] in index notation? Then you need to write [itex](\nabla \times u) \cdot (\nabla \times u)[/itex] in index notation.
 

FAQ: Writing w^2 in Index Notation for Derivation with del X u

1. What is curl with index notation?

Curl with index notation is a mathematical operation used in vector calculus to calculate the rotation or circulation of a vector field. It is represented using the Levi-Civita symbol and the partial derivative operator, and is commonly used in physics and engineering.

2. How is curl with index notation different from traditional curl?

Traditional curl is represented using the del operator and the cross product. Curl with index notation, on the other hand, uses the Levi-Civita symbol and the partial derivative operator. While traditional curl is more intuitive and easier to visualize, curl with index notation is more compact and efficient for calculations.

3. What is the significance of the Levi-Civita symbol in curl with index notation?

The Levi-Civita symbol is a mathematical construct that is used in vector calculus to express the cross product in terms of the determinant. In curl with index notation, it is used to represent the direction of rotation or circulation of a vector field. It is a crucial component of the formula for calculating curl with index notation.

4. Can curl with index notation be applied to higher dimensions?

Yes, curl with index notation can be extended to higher dimensions. While the traditional curl can only be applied to three-dimensional vector fields, curl with index notation can be used in any number of dimensions. However, the complexity of the formula increases with higher dimensions, making it more difficult to use in practice.

5. What are some applications of curl with index notation?

Curl with index notation is used in many fields of physics and engineering, including fluid dynamics, electromagnetism, and continuum mechanics. It is particularly useful for calculating the vorticity of a fluid flow, the magnetic field around a current-carrying wire, and the stress distribution in a solid object under deformation.

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