9 lines
536 B
Markdown
9 lines
536 B
Markdown
[[Fluids]]
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# Summary
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* Pressure difference between fluids causes flow.
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* $A_1v_1=A_2v_2$ expresses conservation of mass. Narrow area force faster speeds to incompressible fluids.
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* Bernoulli's equation: $P_1+pgy_1+\frac{1}{2}pv_1^2=P_1+pgy_2+\frac{1}{2}pv_2^2$ expresses conservation of energy along a streamline.
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* Faster fluid has lower pressure and vice versa
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* Torricelli's theorem: $v=\sqrt{2g\Delta y}$ is derived from energy conservation and gives exit speed of draining fluid.
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* Assume fluids are ideal unless stated otherwise. |