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This text discusses the flow of a vector quantity, V, through an element of a surface, emphasizing the integration of flow rates across a surface patch. By applying the outward unit normal vector, n, we can analyze the flow characteristics effectively. The rate of flow across this surface element is pivotal for understanding fluid dynamics in various applications, such as engineering and environmental studies. This integration approach allows for a comprehensive evaluation of flow behavior.
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Flow through an element of the surface(Surface Integration) Here we can benefit from the fact that V is already a vector quantity : n V Surface Patch where n is the outward unit normal as before Rate of flow through this surface element