Cross Bush
08/21/2024 · High School
Use the methods of symmetry analysis to solve the system of equations: \[ \begin{array}{l}u_{t}+u u_{x}+v u_{y}+w u_{z}=-p_{x}+\nabla^{2} u \\ v_{t}+u v_{x}+v v_{y}+w v_{z}=-p_{y}+\nabla^{2} v, \\ w_{t}+u w_{x}+v w_{y}+w w_{z}=-p_{z}+\nabla^{2} w \\ \text { and } \\ \qquad u_{x}+v_{y}+w_{z}=0,\end{array} \] where \( t, x, y \) and \( z \) are the independent variables of \( u, v, w \) and \( p \), the dependent variables.
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To solve the system of equations using symmetry analysis, identify the symmetries, construct the symmetry group, find invariant solutions, and then solve the reduced system. The specific solutions depend on the boundary and initial conditions.
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