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1 vote
0 answers
358 views

Can you recover a stress tensor from a velocity field?

Consider the Cauchy momentum equation for a steady flow: $$ \rho\mathbf{u}\cdot\nabla\mathbf{u} = \rho\mathbf{g} + \nabla\cdot\mathbf{\sigma} $$ Here, $\mathbf{\sigma}$ is the stress tensor and $\...
Jonathan Michael Foonlan Tsang's user avatar
1 vote
0 answers
52 views

Identity in continuum mechanics

For a problem in the textbook I am reading, I need to prove that $\int_Vw_{i,j}v_jdV = \int_Sw_iv_jn_jdS$, where $S$ is the boundary of the volume $V$, $v_i$ is the velocity vector field of a ...
Andrew's user avatar
  • 1,008
0 votes
1 answer
556 views

Tensor Projection

I'm currently reading "Vector and Tensor Analysis with Applications" by A.I. Borisenko and I.E. Tarapov, and I'm having trouble following a particular mathematical step in where the author projects ...
Doryan Miller's user avatar