Recent content by prezza

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    Dynamic behaviour of a rotatable airfoil, at constant and variable flow field

    Thanks for the references. What I mean is not the airfoil in its conventional usage. Just a geometry like an airfoil. and the rotation axis is parallel to its surface. I am not talking about aircrafts at all. Just wondering about the physics of the flow and forces on such a geometry.
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    Pressure & Temperature Effects on Water State: 25 bar @ 200°C

    You can use a version of Antoine equation, which is valid for high pressures and temperatures. For example use this one, which is valid in the range of 1°C to 374°C and 4.89 mmHg to 162991 mmHg. Calculate a boiling temperature at 25 bar. It is around 224°C. It is more than 200, so we still...
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    Dynamic behaviour of a rotatable airfoil, at constant and variable flow field

    Homework Statement While I was learning about drag and lift on airfloils, I imagined a special airfoil which is fixed at a certain elevation and cannot move vertically (y axis) but can be rotated around its axis (z). Let's assume the direction of the flow to be the x axis. I try to predict...