Recent content by Rishav Roy

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    Why Aren't Pressure Differences Included in Capillary Filling Dynamics?

    Consider a simple case of water rising up due to capillary action. Then this force due to pressure difference acts in the downward direction.
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    Why Aren't Pressure Differences Included in Capillary Filling Dynamics?

    Sorry for the late reply. Coming to the question, we can compute a pressure difference between the two sides of a meniscus (Laplace pressure) due to the presence of a curvature. but this computation is done when the system is static. But when we write equations describing the dynamics...
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    Why Aren't Pressure Differences Included in Capillary Filling Dynamics?

    m(d^2x/dt^2)=-mg+(wetted perimeter)*surface tension-viscous forces. This is the Lucas -Washburn equation. Even during finding the equilibrium height (Jurin's height) at which the movement of fluid stops, we equate the gravitational forces to the surface tension forces, without considering the...
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    What is Rishav Roy's Favorite Mechanical Engineering Topic?

    I am Rishav Roy, a mechanical engineering student from India. Greetings to all!
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    Why Aren't Pressure Differences Included in Capillary Filling Dynamics?

    When we write the equation for expressing the dynamics of capillary filling, why don't we include the effects of pressure difference?
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