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====== Differences ====== This shows you the differences between two versions of the page.

--- docs:utils:fieldprops [2009/03/22 09:32]
gibson
+++ docs:utils:fieldprops [2010/02/02 07:55] (current)
@@ Line 24: / Line 24: @@
 <latex> $ \begin{align*}
- \text{L2Norm}   \|u\|  &= \left(\frac{1}{L_x L_y L_z} \int_{\Omega} \|{\bf u}\|^2\,\, d{\bf x} \right)^{1/2}\\
+ \text{L2Norm} \quad   \|u\|  &= \left(\frac{1}{L_x L_y L_z} \int_{\Omega} \|{\bf u}\|^2\,\, d{\bf x} \right)^{1/2}\\
- \text{energy}   E(u) &= \frac{1}{2 L_x L_y L_z} \int_{\Omega} \|{\bf u}\|^2\,\, d{\bf x}  \\
+ \text{energy} \quad   E(u) &= \frac{1}{2 L_x L_y L_z} \int_{\Omega} \|{\bf u}\|^2\,\, d{\bf x}  \\
- \text{dissipation}    D(u) &= \frac{1}{L_x L_y L_z} \int_{\Omega} \|\nabla \times {\bf u}\|^2 \,\, d{\bf x} \\
+ \text{dissipation}  \quad  D(u) &= \frac{1}{L_x L_y L_z} \int_{\Omega} \|\nabla \times {\bf u}\|^2 \,\, d{\bf x} \\
- \text{forcing}    I(u) &= \frac{1}{L_x L_z} \int_{y=a,b} \frac{\partial u}{\partial y} \, dx dz
+ \text{forcing}  \quad  I(u) &= \frac{1}{L_x L_z} \int_{y=a,b} \frac{\partial u}{\partial y} \, dx dz
 \end{align*} $ </latex>
+FIXME: Some of the measures output by fieldprops assume that the field is the fluctuating velocity field
+of plane Couette flow, and some quantities are reported for the total velocity field %%u+U%% where %U(y) = y%%.
+There should be an option for specifying other common base-flow / fluctuation decompositions, or none.